Editing Bowser Jr. (SSBU)

{{ArticleIcons|ultimate=y}}
{{disambig2|Bowser Jr.'s appearance in ''Super Smash Bros. Ultimate''|the character in other contexts|Bowser Jr.}}
{{Infobox Character
|name = Bowser Jr.
|image = {{tabber|title1=Bowser Jr.|content1=[[File:Bowser Jr. SSBU.png|270px]]|title2=Larry|content2=[[File:Bowser_Jr.-Alt1 SSBU.png|250px]]|title3=Roy|content3=[[File:Bowser_Jr.-Alt2 SSBU.png|250px]]|title4=Wendy|content4=[[File:Bowser_Jr.-Alt3 SSBU.png|250px]]|title5=Iggy|content5=[[File:Bowser_Jr.-Alt4 SSBU.png|250px]]|title6=Morton|content6=[[File:Bowser_Jr.-Alt5 SSBU.png|250px]]|title7=Lemmy|content7=[[File:Bowser_Jr.-Alt6 SSBU.png|250px]]|title8=Ludwig|content8=[[File:Bowser_Jr.-Alt7 SSBU.png|250px]]|}}
|game = SSBU
|ssbgame1 = SSB4
|availability = [[Unlockable character|Unlockable]]
|tier = D-
|ranking = 70
}}

'''Bowser Jr.''' ({{ja|クッパJr.|Kuppa Jr.}}, ''Koopa Jr.'') is a playable character in ''[[Super Smash Bros. Ultimate]]''. He was revealed for the game along with the rest of the veterans on [https://www.youtube.com/watch?v=L93H7YC-83o June 12th, 2018]. He returns with his Junior Clown Car, and the [[Koopalings]] return as [[Alternate costume|alternate costumes]] alongside him. As in {{for3ds}}, he is unlockable, instead of being available from the start. Bowser Jr. is classified as [[Fighter number|Fighter #58]].

As in ''[[Super Smash Bros. 4]]'', {{s|mariowiki|Caety Sagoian}}'s portrayals of Bowser Jr. from various {{uv|Mario}} spin-off games, along with {{s|mariowiki|Lani Minella}}'s portrayals of Larry, Morton, Wendy, and Lemmy, {{s|mariowiki|Mike Vaughn}}’s portrayals of Iggy and Ludwig, and {{s|mariowiki|Dan Falcone}}'s portrayal of Roy from the ''New Super Mario Bros.'' games, were repurposed for ''Ultimate'', in place of the Koopalings' respective voice actors (except Roy) from ''Mario Kart 8'' onward.

Bowser Jr. is ranked 70th out of 82 on the current [[tier list]], placing him at the top of the D- tier. This is a very slight improvement over his 47th out of 54 placement in ''SSB4''. Bowser Jr. has a unique type of playstyle using his signature Clown Kart for his neutral game. His Clown Kart now takes priority for his hurtbox, taking regular damage compared to himself. Bowser Jr. has capable normals for racking up damage. For example, his rapid jab is noteworthy for being a viable KO tool and is rather quick too, coming out on frame 4. His tilts also serve some purpose as good poking tools that linger. His grab game is also strong as his up throw leads into multiple up aerials and a strong advantage state and combo game with juggling and his down throw is good for racking up damage and stage positioning. His forward and back throws are also solid as they are good setups for edgeguards or potent KO moves at higher percentages. His other aerials, like his forward aerial and back aerial, are solid disjoints to help Jr's range and viable KO moves. Bowser Jr's smash attacks are also useful as solid finishers, with forward smash coming out fairly quick and little endlag, up smash is a quick out-of-shield option, coming out on frame 7, and down smash is a fast smash attack that hits on both sides simultaneously. Bowser Jr's special moves also have their fair share of strengths. His [[Clown Kart Dash]] is a strong burst option that greatly improves Bowser Jr's approach and can also combo into certain moves like up aerial and the hammer swing from [[Abandon Ship!]]. Clown Kart Dash can also be used for [[mindgames]] or for playing defensively to slow down the pace of the match. [[Clown Cannon]] is useful for forcing approaches and he can fire two at a time which can apply shield pressure. [[Mechakoopa]] is his main stage control move that can also be used for [[mindgames]] or KO setups due to its property as an item.

However, Bowser Jr. has several weaknesses that balance out his strengths. His overall mobility is mediocre so he has to rely a lot on his Clown Kart for movement. While his Clown Kart takes priority over his hurtbox, Bowser Jr. himself will take more damage compared to the kart. Due to him being a heavyweight, it also makes Jr. easy to combo and juggle. Bowser Jr's recovery is also exploitable if he is hit while recovering between the kart and the ledge, it renders him unable to recover and gimped. Several of Bowser Jr's moves, such as forward air, back air, down smash, and more have high amounts of endlag, making them fairly risky to throw out and easy for him to be punished. His projectiles are also easily predictable to see coming and avoid which can also be used against him.

Overall, Bowser Jr. is a character that has unique strengths in his toolkit but exploitable weaknesses that are easy to take advantage of. Although his overall representation has been below-average, Bowser Jr. had nevertheless seen tournament success thanks to dedicated players such as {{Sm|Young Eevey}} in the early metagame and {{Sm|Yoda Cage}} in the post-online metagame.

==How to unlock==
Complete one of the following:
*Play [[VS. match|VS. matches]]. Bowser Jr. being the 61st character to be unlocked.
*Clear {{SSBU|Classic Mode}} with {{SSBU|Fox}} or any character in his unlock tree, being the 6th character unlocked after {{SSBU|Daisy}}.
*Have Bowser Jr. join the player's party in [[World of Light]].
With the exception of the third method, Bowser Jr. must then be defeated on [[Delfino Plaza]]. In World of Light, he is fought on the [[Ω form]] of [[Mushroomy Kingdom]].

==Attributes==
Bowser Jr. is a unique [[Weight|heavyweight]] fighter because his Junior Clown Car has a separate hurtbox from him, making his survivability variable. Bowser Jr. sports the 20th slowest [[Walk|walking speed]] (tied with {{SSBU|Peach}} and {{SSBU|Daisy}}), the 21st slowest [[Dash|dashing speed]], the 26th fastest [[air speed]] (tied with {{SSBU|Ike}} and {{SSBU|R.O.B.}}), the 30th fastest [[falling speed]] (tied with Ike, {{SSBU|Corrin}}, {{SSBU|Sonic}}, {{SSBU|Ganondorf}}, and {{SSBU|Duck Hunt}}), slightly above average [[gravity]] and [[air acceleration]], and low [[traction]]. All in all, these stats render his mobility somewhat poor except in the air, and as a result, many characters supersede him in terms of [[approach]].

Bowser Jr. and his Junior Clown Car both have separate hurtboxes, much like Duck Hunt. He possesses a unique mechanic where the Clown Car takes less damage from all incoming attacks, whereas he himself takes more damage in comparison. Unlike in ''SSB4'', the Clown Car's hurtbox takes priority over Bowser Jr.'s hurtbox: when combined with his heavy weight, this gives him above average survivability compared to a good majority of the rest of the cast, or possibly even a good majority of other characters that are of his weight class. Bowser Jr. also possesses a purely disjointed moveset and two good projectiles in [[Clown Cannon]] and [[Mechakoopa]].

Clown Cannon can have two cannonballs in play at the same time, deals good damage and knockback, and its cannonballs travel quickly. This makes Clown Cannon good for disrupting or throwing off approaches, as well as KOing at high percentages. This is further compounded by its outstanding shield damage, making Clown Cannon a viable [[Punishment|punishing]] tool. Mechakoopa is also disruptive due to its explosion effect upon being hit. The Mechakoopa always follows opponents no matter the circumstances, and explodes upon contact, serving as an excellent KO setup against launched opponents.

[[Clown Kart Dash]] travels extremely quickly, vastly making up for Bowser Jr.'s poor approach and allowing him to easily cover long distances, both on the ground and in the air. Clown Kart Dash also deals above-average damage and knockback at maximum speed, enabling it to KO opponents at mid-high percentages. Junior can also double jump out of it, granting him potential aerial follow-ups. [[Abandon Ship!]] travels good vertical distance, allowing Junior to return to the stage if he is right below it. The Junior Clown Car itself damages opponents upon exploding, serving as a potential KO option at later percentages. While outside of the clown car, Bowser Jr. is gifted with a hammer, which deals high damage, high knockback, and has quick startup, making it a good KO option in its own right. Clown Kart Dash and Abandon Ship! can be mixed up with an air dodge, combining to give Junior an impressive recovery.

Bowser Jr.'s aerials have great utility, going hand-in-hand with his specials. Neutral aerial has edgeguarding capabilities and is effective out-of-shield because of its lingering hitbox. His forward and back aerials are great for edgeguarding, spacing, and KOing because of their high knockback, high potential damage, and good range. Bowser Jr.'s up aerial is good for juggling because of its decent speed and vertical range and serves as an additional KO option. Lastly, down aerial can shield poke, and works well with Clown Kart Dash when initiating follow-ups.

Bowser Jr.'s smash attacks are go-to KO options, all dealing high knockback and overall damage: forward smash has low ending lag, pokes shields, and can be angled; up smash has very quick startup and ending lag, pressures shields, and denies any aerial approaches; and lastly, down smash has high range and KOs, the earliest out of Junior's smash attacks.

Despite his great aerial mobility and damage-racking potential, Bowser Jr. is not without his flaws. One of his biggest problems is that his recovery is glaringly susceptible to gimps. While Abandon Ship! grants him considerable vertical distance, any weak hit will result in Bowser Jr. not being able to respawn the Junior Clown Car, and it doesn't have a hitbox outside of the Clown Car's explosion, making him very vulnerable. Another major problem that Bowser Jr. faces is a lack of viable out-of-shield options; despite his up smash being a fast out-of-shield option with decent kill power, it lacks range and leaves Junior vulnerable if it misses. Additionally, his grab is one of the slowest non-tether grabs, his aerials are either laggy or have poor range for being disjointed and his Mechakoopas will deactivate if they hit a shield, making him susceptible to punishes, and as his traction is one of the lowest in the game, this gives him a poor out-of-shield game. Bowser Jr. is also a very straightforward character, which can make him quite predictable at times. For instance, Clown Cannon and Mechakoopa are important to Bowser Jr.'s neutral game, making it easy (especially for characters such as {{SSBU|Fox}}) to read and shut down his options. Despite his grab range being rather long, his grabs have noticeable start-up and ending lag, and his throws have low utility due to their inability to KO at reasonable percentages outside of forward throw, with only up throw possessing some combo potential. In addition, despite his high power, Bowser Jr. suffers from poor KO potential due to having very few reliable KOing options (his neutral attack finisher, smash attacks and his forward/back aerials), which is further compounded by said options being burdened with considerable ending lag, while his forward smash has low ending lag and is safe on shield, but its multihits don't connect reliably into the final hit. Many of his attacks, such as his tilts, also have poor range, so he fares surprisingly poorly against swordfighters considering his disjointed moveset. Finally, Bowser Jr. takes more damage if he is hit but not his Koopa Clown Car, so he is very vulnerable to aerial approaches and after using Abandon Ship!, and he also struggles with dealing with pressure from his opponents. Since he always takes priority over his Clown Car when thrown, Bowser Jr. is also particularly vulnerable to being grabbed and can be knocked out earlier than a character of his weight class would by strong kill throws.

Overall, Bowser Jr. fares well with a bait-and-punish playstyle like [[Bowser (SSBU)|his father]] does, but he can also be potent at pressuring the opponent thanks to Clown Cannon, Clown Kart Dash, and Mechakoopa. However, his slew of exploitable weaknesses can make him a bit underwhelming overall, and frequently overshadowed compared to the rest of the cast. Because of this, his results and representation have been below-average overall, like in ''SSB4''.

==Changes from ''[[Super Smash Bros. 4]]''==
Near the end of ''SSB4''{{'}}s metagame, Bowser Jr. had been considered a low-tier character (47th out of 54 characters), due to his linear playstyle, poor disadvantage state that included a very gimpable recovery despite its long distance, and his susceptibility to being racked damage on easier than most other characters due to the Clown Car mechanic. Likely as a result of this, Bowser Jr. has been noticeably buffed in his transition to ''Ultimate''.

Bowser Jr.'s biggest change was to his hurtbox, as the Junior Clown Car's hurtbox now takes priority over Bowser Jr.'s own, which allows him to more reliably take less damage on average compared to any other fighter, and makes his survivability comparable to heavyweights like {{SSBU|Donkey Kong}}. Aside from this, Bowser Jr. benefits from some of the changes to universal game mechanics: the universal frame 3 [[jumpsquat]] allows Bowser Jr. to use his strong aerials more effectively, and the increase in mobility contributes to both a better grounded [[approach]] for Bowser Jr. and improves his air game and recovery. The reintroduction of directional [[air dodge]]s slightly improves his recovery, allowing him to mix it up with more ease. The lower [[landing lag]] on his aerial attacks also improves their combo and spacing potential.

Bowser Jr.'s previously underwhelming moveset has received several quality of life changes. Many of his moves either connect better (such as [[neutral attack|his jab]] and [[dash attack]]) or have had their misleading hitboxes adjusted or their blindspots removed (such as [[up tilt]] and [[grab]], the latter being given more range). His entire grab game has been significantly buffed, as [[forward throw]] can now KO reliably, up throw has less endlag and knockback that renders it now capable of starting combos, and down throw now deals much more damage. His special moves have seen various noteworthy buffs. [[Clown Cannon]], a previously slow [[projectile]] with limited use, is now less punishable due to its decrease in lag and increase in lifetime if fired in the air, and two can be in play at once; it also deals far more [[shield damage]], and a landing cannonball can now hit twice to almost break a full shield, especially if uncharged. [[Clown Kart Dash]] travels faster, allows Bowser Jr. to keep his double jump if canceled, no longer requires travel time to deal maximum damage and immediately deals higher damage if the directional key is held forward, while its spinout deals far more knockback, making the move harder-hitting in general and more versatile. [[Abandon Ship!]]'s hammer swing has more range and a longer duration. Finally, [[Mechakoopa]]s start moving quicker and bite onto victims, guaranteeing that the second hit will connect.

However, Bowser Jr. has also seen some equally noticeable nerfs. In exchange for quality of life changes, many of his standard moves have seen detriments to damage and power: neutral attack deals much less damage, especially in the infinite part (though the last hit retains its extreme knockback); his forward tilt and neutral aerial now have a sourspot, with the former losing most of its KO power, and the latter having no blindspots at the cost of being less consistent; and the cannonballs of Clown Cannon can only KO if fully charged. Some of his moves, such as forward and up smashes, as well as down aerial, have altered hitbox placements that worsen their consistency, making them ironically harder to land than they were in ''SSB4''. Despite mostly receiving buffs, a few of Bowser Jr.'s special moves have also seen some nerfs; he cannot air dodge out of Clown Kart Dash anymore, but most notably, Mechakoopas now deactivate on the ground if they walk into a shield, no longer crossing them up and allowing them to be immediately picked up by the opponent, making them much easier to use them against Bowser Jr.

Though he's mostly seen improvements from the universal changes, a few of them hurt him overall. Aside from his standing grab, his dash and pivot grabs have less range, and all of them are slower in terms of ending lag, a nerf shared with the rest of the cast. The changes to air dodge mechanics make him easier to edgeguard. The weakening of [[rage]] further pronounces the nerfs to his moveset's power and thus doesn't allow him to take advantage of it as easily due to his improved endurance, creating issues with his problematic KO potential as a result.

In the end, Bowser Jr's moveset, while not significantly changed in terms of functionality, has been heavily adjusted to be more consistent, granting many of his moves less situational use than in ''SSB4'', whereas the more notable changes to his special moveset and his faster mobility allow him to zone opponents more effectively and approach with less risk. However, his moveset's lower power from knockback reductions and new sourspots make it slightly harder for him to close out stocks, the nerfs to Mechakoopa force him to be more cautious of his tools, and some of the changes to the engine makes it slightly harder to use some of his newfound buffs. Aside from this, Bowser Jr. also retains several of his weaknesses from the previous game, including his poor disadvantage state, vulnerable recovery, poor range despite disjointed attacks and a somewhat linear playstyle. Though he has received a few notable changes in game updates that further contribute to his notable buffs, the extent to which they work is questionable given the various buffs given to other characters, both on release and from game updates, as well as the introduction of new DLC characters which he struggles against. Thus, while Bowser Jr. is a better character in ''Ultimate'', he has not significantly improved from his ''SSB4'' incarnation, only keeping up with the rest of the cast.

{{SSB4 to SSBU changelist|char=Bowser Jr.}}

==Update history==
Bowser Jr. has been buffed by game updates. Update 3.1.0 granted Bowser Jr. several useful buffs. Up tilt and aerial [[Clown Cannon]] had their lag decreased by varying amounts, which improved their combo potential and safety, respectively. Dash attack's edge-guarding potential was improved, thanks to its last hit's angle being lowered noticeably. Up smash's KO potential was improved slightly, thanks to a small knockback increase.

[[Clown Kart Dash]]'s travel speed was increased (which also heightened its damage output by extension) and its hitbox now remains active upon its bounce, the latter of which improved its consistency. Lastly, Abandon Ship! became slightly more consistent: its grounded Junior Clown Car hitbox connects better with its explosion hitbox, while its hammer's duration and hitboxes were lengthened and enlarged, respectively.

After update 7.0.0 enlarged Bowser Jr.'s shield as part of a near-universal buff, update 9.0.0 granted Bowser Jr. his most useful buffs to date. Forward tilt and especially forward throw gained considerable knockback increases; while the former is now better for spacing and safer on hit, the latter is now a viable (albeit situational) KO option, which is something Bowser Jr.'s grab game lacked following back throw's nerf in the transition to ''Ultimate''.

Up smash underwent several hitbox, knockback and angle adjustments in order to improve its consistency, while down smash's overall lag was decreased. Clown Kart Dash became safer thanks to its armor threshold being noticeably increased. Lastly, Abandon Ship!'s recovery potential was improved, thanks to its start-up lag being decreased.

In update 13.0.1 Bowser Jr received some more buffs and a nerf. Clown Kart Dash was given more base knockback on its spin, dash attacks damage was increased and its first and last hits had their base knockback decreased. Down tilt’s first and second hit were given less knockback growth and less base knockback, and its final hit had its launch angle adjusted to launch at a lower angle. However, Bowser Jr’s down tilt also received a nerf, only the first hit of his down tilt will hit opponents that are hanging on the ledge preventing the full move from connecting properly.

As a result of these changes, Bowser Jr. fares better than he did at ''Ultimate''{{'}}s launch.

'''{{GameIcon|ssbu}} {{SSBU|1.1.0}}'''
{{UpdateList (SSBU)/1.1.0|char=Bowser Jr.}}

'''{{GameIcon|ssbu}} {{SSBU|3.0.0}}'''
{{UpdateList (SSBU)/3.0.0|char=Bowser Jr.}}

'''{{GameIcon|ssbu}} {{SSBU|3.1.0}}'''
{{UpdateList (SSBU)/3.1.0|char=Bowser Jr.}}

'''{{GameIcon|ssbu}} {{SSBU|7.0.0}}'''
{{UpdateList (SSBU)/7.0.0|char=Bowser Jr.}}

'''{{GameIcon|ssbu}} {{SSBU|9.0.0}}'''
{{UpdateList (SSBU)/9.0.0|char=Bowser Jr.}}

'''{{GameIcon|ssbu}} {{SSBU|13.0.1}}'''
{{UpdateList (SSBU)/13.0.1|char=Bowser Jr.}}

==Moveset==
*Moves that hit the Junior Clown Car deal 0.88× damage, whereas those that hit Bowser Jr. himself will deal 1.15× damage. The Junior Clown Car's hurtbox takes priority over Bowser Jr.'s hurtbox, unlike in Smash 4, where it was the opposite.
''For a gallery of Bowser Jr.'s hitboxes, see [[Bowser Jr. (SSBU)/Hitboxes|here]].''

{{MovesetTable
|game=SSBU
|neutralcount=2
|neutralinf=y
|neutralname=Clown Jab ({{ja|クラウンジャブ|Kuraun Jabu}}) / Clown Hook ({{ja|クラウンフック|Kuraun Fukku}}) / Clown Hundred Rending Punch ({{ja|クラウン百裂パンチ|Kuraun Hyakuretsu Panchi}}) / Clown Hundred Rending Finish ({{ja|クラウン百裂フィニッシュ|Kuraun Hyakuretsu Finisshu}})
|neutral1dmg=2%
|neutral2dmg=2%
|neutralinfdmg=0.5% (loop), 3% (last)
|neutraldesc=The Junior Clown Car performs a {{s|wikipedia|one-two combo}}, followed by a flurry of punches that ends with an uppercut. The fists come from ''{{s|mariowiki|New Super Mario Bros U}}''. It has impressive damage racking potential, as it can easily deal around 20%. Its first hit comes out on frame 4 and has excellent knockback for a jab, making it one of the few jabs that can KO. It can KO at the ledge around 100%. This makes jab a viable grounded KO and ledge trap option. It is similar to Bowser Jr.’s animation when he is at half health as a boss in ''{{s|mariowiki|Mario Party: Star Rush}}''.
|ftiltname=Fork ({{ja|フォーク|Fōku}})
|ftiltdmg=8% (sweetspot), 6% (sourspot)
|ftiltdesc=The Junior Clown Car stabs a large dinner fork forward. It can be angled and is very useful for spacing.
|utiltname=Push-Up Fork ({{ja|突き上げフォーク|Tsukiage Fōku}})
|utiltdmg=6%
|utiltdesc=The Junior Clown Car stabs a large dinner fork upward. It can combo into itself beginning at around 10% and juggle at medium percentages. It is also great at anti-airing due to its fast startup and large disjoint.
|dtiltname=Licking ({{ja|なめまわし|Namemawashi}})
|dtiltdmg=2% (hits 1-2), 6% (hit 3)
|dtiltdesc=The Junior Clown Car uses its tongue to lick forward three times. It has a fair amount of utility, as it is efficient at warding off rushdowns, can act as a set-up for a dash attack, or interfere with an opponent attempting to grab an edge due to its undulating hitbox. It can KO opponents at ledge at under 120%.
|dashname=Round Saw ({{ja|丸ノコギリ|Maru Nokogiri}})
|dashdmg=2% (hits 1-5), 4% (hit 6)
|dashdesc=The Junior Clown Car opens its mouth to swing a {{iw|mariowiki|grinder}} twice.
|fsmashname=Smash Twin Drills ({{ja|スマッシュツインドリル|Sumasshu Tsuin Doriru}})
|fsmashdmg={{ChargedSmashDmgSSBU|1}} (hits 1-5), {{ChargedSmashDmgSSBU|11}} (hit 6)
|fsmashdesc=The Junior Clown Car uses two drills to drill the opponent in place. The final hit is a powerful KOing option, while the whole move has low ending lag and it can be angled. The drills come from ''{{s|mariowiki|Super Mario Galaxy 2}}'', but they bear a resemblance to the drills from ''Kid Icarus Uprising''.
|usmashname=Rotary Mixer ({{ja|ロータリーミキサー|Rōtarī Mikisā}})
|usmashdmg={{ChargedSmashDmgSSBU|1}} (hit 1), {{ChargedSmashDmgSSBU|1.3}} (hits 2-4), {{ChargedSmashDmgSSBU|2.3}} (hit 5), {{ChargedSmashDmgSSBU|6}} (hit 6)
|usmashdesc=Bowser Jr. performs a handstand to attack with the Junior Clown Car's spinning propeller. It is Bowser Jr.'s fastest smash attack, with its multiple hits being useful for pressuring shields or denying aerial approaches.
|dsmashname=Double Iron Ball ({{ja|ダブル鉄球|Daburu Tekkyū}})
|dsmashdmg={{ChargedSmashDmgSSBU|18}}
|dsmashdesc=The Junior Clown Car slams two wrecking balls on both sides. It is Bowser Jr.'s most powerful smash attack, and is the third strongest down smash in the game, making it deadly for [[punishment]]. However, it has high ending lag unlike his other smash attacks, making it equally as punishable.
|nairname=Propeller Punch ({{ja|プロペラパンチ|Puropera Panchi}})
|nairdmg=8% (clean), 7% (mid), 5% (late)
|nairdesc=The Junior Clown Car twirls around with the boxing glove arms extended. It is a weak but useful aerial, which combos reliably from [[Clown Kart Dash]] and is effective as a anti-pressure and edgeguarding option.
|fairname=Iron Ball Swing ({{ja|鉄球ふりまわし|Tekkyū Furimawashi}}
|fairdmg=11%/9% (clean), 8%/6.5% (mid), 5%/4% (late), 2% (landing)
|fairdesc=The Junior Clown Car swings a wrecking ball forward in a circling motion. Landing while the wrecking ball is still out produces another hitbox, which can lead to more follow-ups on the ground, as well as compensate for its high landing lag. Useful for edge-guarding and spacing, as well as a viable KOing option.
|bairname=Back Iron Ball ({{ja|裏鉄球|Ura Tekkyū}})
|bairdmg=14% (clean tip), 8% (clean base, late)
|bairdesc=The Junior Clown Car thrusts a wrecking ball backward. Useful for edge-guarding and a viable KOing option due to its high knockback.
|uairname=Ceiling Crush ({{ja|天井砕き|Tenjō Kudaki}})
|uairdmg=10% (clean), 6.5% (late)
|uairdesc=Quickly swings a {{s|mariowiki|hammer}} above himself; if playing as the Koopalings, they instead swing their respective wands. Bowser Jr. is often able to link two or three additional up-airs, making for an excellent damage-racking and combo move. Has KO potential at around 170%.
|dairname=Piercing Drill ({{ja|突き刺しドリル|Tsukisashi Doriru}})
|dairdmg=1.5% (hits 1-8), 2.5% (last), 2% (landing)
|dairdesc=The Junior Clown Car extends a drill from its underside hatch to pierce opponents. Its high ending lag is compensated by the hitbox it produces upon landing, which grants it follow-up potential. If the attack hits an opponent, it can cancel quickly into other moves; if not, Bowser Jr. suffers from moderate ending lag. Unlike most down aerials, Bowser Jr.'s is unable to [[meteor smash]].
|grabname=Grab ({{ja|つかみ|Tsukami}})
|grabdesc=The Junior Clown Car extends a claw to grab the opponent. A slow grab overall.
|pummelname=Grab Piko Piko Hammer ({{ja|つかみピコピコハンマー|Tsukami Piko Piko Hanmā}})
|pummeldmg=1.3%
|pummeldesc=Hits the opponent with a toy hammer. A fairly fast pummel. The toy hammer looks identical to the one used in the [[mariowiki:Sticker_(Paper_Mario:_Sticker_Star)#Eekhammer|Eekhammer sticker]] from ''{{iw|mariowiki|Paper Mario: Sticker Star}}''. Each hit plays the recurring sound of [[Mario]] jumping onto a [[Koopa Troopa]] shell in the ''Super Mario'' franchise.
|fthrowname=Body Blow ({{ja|ボディブロー|Bodi Burō}})
|fthrowdmg=3% (hit 1), 7% (throw)
|fthrowdesc=The Junior Clown Car throws an uppercut. It is fairly good for launching opponents at the edge for an edge-guard. It is also Bowser Jr.'s strongest throw, as it can KO most middleweights starting around 150% without [[rage]].
|bthrowname=Centrifugal Throw ({{ja|遠心投げ|Enshin Nage}})
|bthrowdmg=11%
|bthrowdesc=The Junior Clown Car twirls and then throws the opponent backward. Bowser Jr.'s second strongest throw, as it can KO most middleweights starting around 160% without rage.
|uthrowname=Fling Away ({{ja|放り投げ|Hori Nage}})
|uthrowdmg=7%
|uthrowdesc=The Junior Clown Car flings the opponent upward. It can lead into up aerial at low percentages.
|dthrowname=Back Drill ({{ja|バックドリル|Bakku Doriru}})
|dthrowdmg=1.2% (hits 1-7), 4% (throw)
|dthrowdesc=The Junior Clown Car throws the opponent onto the ground and then extends a drill from its underside hatch to pierce opponents. It deals good damage (~12% before 1v1 multipliers) and can set up into tech chases at medium percentages into Clown Kart Dash.
|floorfname=&nbsp;
|floorfdmg=6%
|floorfdesc=Gets up while spinning a pair boxing gloves outstretched on both sides.
|floorbname=&nbsp;
|floorbdmg=7%
|floorbdesc=Gets up while spinning a Grinder around himself.
|floortname=&nbsp;
|floortdmg=5%
|floortdesc=Gets up while thrusting a large dinner fork to both sides.
|edgename=&nbsp;
|edgedmg=10%
|edgedesc=Slams a pair of wrecking balls while climbing up.
|nsname=Clown Cannon
|nsdmg=10% (uncharged), 7% (uncharged late), 20% (fully charged), 14% (fully charged late)
|nsdesc=The Junior Clown Car opens its mouth and fires a {{s|mariowiki|cannonball}}. It can be charged to increase the cannonball's speed and power. At the end of its path, the cannonball will drop to the ground, which can hit opponents attempting to recover if it is spaced properly. However, it has high overall lag. As the projectile's hitbox changes once it begins to drop to the ground, a cannonball can hit an opponent's shield twice with correct timing, which deals immense shield damage.
|ssname=Clown Kart Dash
|ssdmg=5.2%-8.8% (collision), 10%-16.3% (doughnut)
|ssdesc=The Junior Clown Car transforms into a [[mariowiki:kart|go-kart]] that speeds forward. Gains 9% [[damage-based armor]] on only the Junior Clown Car, effectively granting ~10.22% damage-based armor due to its 0.88× damage multiplier. Tilting the [[Control stick|control stick/circle pad]] in the opposite direction or pressing the attack/special button will cause the Junior Clown Car to perform a {{iw|wikipedia|doughnut|driving}}, which deals significantly more damage and higher knockback to opponents on contact compared to simply charging into them, which KOs at moderate percents. Spinning out in the air right before hitting the floor will cause Bowser Jr. to bounce during the spinout, which can cause it to miss. Spinning out in the air can produce horizontal movement, after which it can be used again. All versions of the move can be [[Jump-canceling|jump canceled]], even right after hitting an opponent, which can lead into combos and mix-ups. It can be used multiple times in midair, grants an overall long distance, and lets Bowser Jr. delay his recovery to play around edgeguards, making it a good recovery; however, as the move causes Bowser Jr. to rear back quite a distance on startup, using it near the side blast zones can unintentionally KO him. 
|usname=Abandon Ship!
|usdmg=5% (contact), 13% (explosion), 15%/10% (hammer)
|usdesc=Bowser Jr. ejects himself from the Junior Clown Car. The Junior Clown Car slowly falls to the ground and then explodes with high power when the move is used in midair, whereas it will simply explode after a brief period when used on the ground. When Bowser Jr. is out of the Junior Clown Car, he is not rendered [[helpless]] and can still attack with a hammer (or in the case of the Koopalings, their respective wands), which is powerful enough to KO at medium to high percentages. He is also able to airdodge once. If Junior is hit by a strong attack while in this state, he can get the Junior Clown Car back by pressing the attack button. However, taking a weak hit while out of the Junior Clown Car will render him unable to get the car back without landing, leaving him susceptible to gimps. The Junior Clown Car's angle usually sends opponents at a favorable position to follow up with the hammer swing.
|dsname=Mechakoopa
|dsdmg=2% (contact), 7% (explosion)
|dsdesc=The Junior Clown Car drops a {{s|mariowiki|Mechakoopa}} from its underside hatch. The Mechakoopa falls in a strong downward arc; once it lands, it starts walking around. If it reaches a wall or dead end, it will turn around and walk in the opposite direction. If it makes contact with an opponent (or travels enough distance in the air without landing), it will detonate. The Mechakoopa will also bite onto opponents on contact, guaranteeing that it will explode on them shortly after Lastly, if enough time passes and they have not hit an opponent yet, they will spark out and detonate automatically. They can be picked up and thrown as items either by Bowser Jr. or his opponent. If an opponent shields a walking Mechakoopa, it will drop to the ground harmlessly, which can then be picked up.
|fsname=Shadow Mario Paint
|fsdmg=3% (paint), 5% (explosion)
|fsdesc=Bowser Jr. transforms into {{s|mariowiki|Shadow Mario}} before flying upwards, using the {{s|mariowiki|Magic Paintbrush}} to [[mariowiki:Graffiti|paint a giant, orange X]] on the screen. Anyone caught in the X's hitbox will be damaged, with the X pulling opponents into it once they are hit. The X will clear away with an explosion after some time. The sheer size of the X makes avoiding damage from this Final Smash difficult, similarly to [[Iceberg]].
}}

===Stats===

{{Attributes
| cast=89
| weight=108 | rweight=10-13
| dash=1.76 | rdash=73-77
| run=1.566 | rrun=68
| walk=0.924 | rwalk=64-66
| trac=0.085 | rtrac=79-82
| airfric=0.015 | rairfric=9-30
| air=1.134 | rair=28-30
| baseaccel=0.01 | rbaseaccel=15-87
| addaccel=0.07 | raddaccel=26-38
| gravity=0.092 | rgravity=42-44
| fall=1.65 | rfall=33-38
| ff=2.64 | rff=34-39
| jumpsquat=3 | rjumpsquat=1-88
| jumpheight=34.4 | rjumpheight=27
| shorthop=16.59 | rshorthop=35
| djump=34.4 | rdjump=35
}}

===[[Announcer]] calls===
==== Bowser Jr. ====
<gallery>
Bowser Jr. English Announcer SSB4-SSBU.wav|English
Bowser Jr. Japanese Announcer SSB4-SSBU.wav|Japanese/Chinese
Bowser Jr. French Announcer SSBU.wav|French
Bowser Jr. French EU Announcer SSBU.wav|French (PAL)
Bowser Jr. German Announcer SSBU.wav|German
Bowser Jr. Italian Announcer SSBU.wav|Italian
Bowser Jr. Russian Announcer SSBU.wav|Russian
Bowser Jr. Spanish Announcer SSBU.wav|Spanish
Bowser Jr. Spanish EU Announcer SSBU.wav|Spanish (PAL)
</gallery>
==== Larry ====
<gallery>
Larry English Announcer SSB4-SSBU.wav|English/Japanese/Chinese
Larry French Announcer SSBU.wav|French
Larry German Announcer SSBU.wav|German
Larry Italian Announcer SSBU.wav|Italian
Larry Russian Announcer SSBU.wav|Russian
Larry Spanish Announcer SSBU.wav|Spanish
</gallery>
==== Roy ====
<gallery>
Roy Koopa English Announcer SSB4-SSBU.wav|English/Japanese/Chinese
Roy Koopa French Announcer SSBU.wav|French
Roy Koopa French EU Announcer SSBU.wav|French (PAL)
Roy Koopa German Announcer SSBU.wav|German
Roy Koopa Italian Announcer SSBU.wav|Italian
Roy Koopa Russian Announcer SSBU.wav|Russian
Roy Koopa Spanish Announcer SSBU.wav|Spanish
</gallery>
==== Wendy ====
<gallery>
Wendy English Announcer SSB4-SSBU.wav|English/Japanese/Chinese
Wendy French Announcer SSBU.wav|French
Wendy German Announcer SSBU.wav|German
Wendy Italian Announcer SSBU.wav|Italian
Wendy Russian Announcer SSBU.wav|Russian
Wendy Spanish Announcer SSBU.wav|Spanish
</gallery>
==== Iggy ====
<gallery>
Iggy English Announcer SSB4-SSBU.wav|English/Japanese/Chinese
Iggy French Announcer SSBU.wav|French
Iggy German Announcer SSBU.wav|German
Iggy Italian Announcer SSBU.wav|Italian
Iggy Russian Announcer SSBU.wav|Russian
Iggy Spanish Announcer SSBU.wav|Spanish
</gallery>
==== Morton ====
<gallery>
Morton English Announcer SSB4-SSBU.wav|English/Japanese/Chinese
Morton French Announcer SSBU.wav|French
Morton French EU Announcer SSBU.wav|French (PAL)
Morton German Announcer SSBU.wav|German
Morton Italian Announcer SSBU.wav|Italian
Morton Russian Announcer SSBU.wav|Russian
Morton Spanish Announcer SSBU.wav|Spanish
</gallery>

==== Lemmy ====
<gallery>
Lemmy English Announcer SSB4-SSBU.wav|English/Japanese/Chinese
Lemmy French Announcer SSBU.wav|French
Lemmy German Announcer SSBU.wav|German
Lemmy Italian Announcer SSBU.wav|Italian
Lemmy Russian Announcer SSBU.wav|Russian
Lemmy Spanish Announcer SSBU.wav|Spanish
</gallery>
==== Ludwig ====
<gallery>
Ludwig English Announcer SSB4-SSBU.wav|English/Japanese/Chinese
Ludwig French Announcer SSBU.wav|French
Ludwig German Announcer SSBU.wav|German
Ludwig Italian Announcer SSBU.wav|Italian
Ludwig Russian Announcer SSBU.wav|Russian
Ludwig Spanish Announcer SSBU.wav|Spanish
</gallery>

===[[On-screen appearance]]===
*Flies onto the stage in the Junior Clown Car and makes a taunting facial expression toward the camera.

[[File:BowserJr.OnScreenAppearanceSSBU.gif|left|thumb|300px|Bowser Jr.'s on-screen appearance.]]

{{clr}}

===[[Taunts]]===
*'''Up Taunt''': Jumps up, sits on the edge of the [[Junior Clown Car]] and makes a tiny breath of fire, chuckling. The Junior Clown Car makes a shocked expression.
*'''Side Taunt''': Twirls a hammer, or in the case of the Koopalings, their respective wands. The Junior Clown Car briefly closes its eyes.
*'''Down Taunt''': The Clown Car spawns its wheels and performs a donut with an angry expression, then returns to normal. As the donut ends, Bowser Jr. / the Koopaling spins in place, briefly shaking their head as the Junior Clown Car reverts back to normal.
<gallery>
SSBUBowserJrTaunt1.gif|Bowser Jr.'s up taunt.
SSBUBowserJrTaunt2.gif|Bowser Jr.'s side taunt.
SSBUBowserJrTaunt3.gif|Bowser Jr.'s down taunt.
</gallery>

===[[Idle poses]]===
*Places his hand over his eyes and looks around. The Junior Clown Car closes it's eyes for the duration of the idle pose.
*Hops impatiently in the Junior Clown Car twice. The Junior Clown Car opens its mouth for each hop.
<gallery>
SSBUBowserJrIdle1.gif|Bowser Jr.'s first idle pose.
SSBUBowserJrIdle2.gif|Bowser Jr.'s second idle pose.
</gallery>

===[[Crowd cheer]]===
====Bowser Jr.====
<div class="tabber">
<div class="tabbertab" title="English, Japanese/Chinese, Italian, Dutch, French">
{| class="wikitable" border="1" cellpadding="4" cellspacing="1"
|-
!{{{name|}}}
!Cheer (English)
!Cheer (Japanese/Chinese)
!Cheer (Italian)
!Cheer (Dutch)
!Cheer (French)
|-
! scope="row"|Cheer
|[[File:Bowser Jr. Cheer English SSBU.ogg|center]]||[[File:Bowser Jr. Cheer Japanese SSBU.ogg|center]]||[[File:Bowser Jr. Cheer Italian SSBU.ogg|center]]||[[File:Bowser Jr. Cheer Dutch SSBU.ogg|center]]||{{NTSC}} [[File:Bowser Jr. Cheer French NTSC SSBU.ogg|center]] <br> {{PAL}} [[File:Bowser Jr. Cheer French PAL SSBU.ogg|center]]
|-
! scope="row"|Description
|Jun - ior! || Koo - pa! Jun - ior! || Bow - ser! Jun - ior! || Jun - ior! || Bow - ser! Jun - ior!
|}
</div>
<div class="tabbertab" title="German, Spanish, Russian, Korean">
{| class="wikitable" border="1" cellpadding="4" cellspacing="1"
|-
!{{{name|}}}
!Cheer (German)
!Cheer (Spanish)
!Cheer (Russian)
!Cheer (Korean)
|-
! scope="row"|Cheer
|[[File:Bowser Jr. Cheer German SSBU.ogg|center]]||{{NTSC}} [[File:Bowser Jr. Cheer Spanish NTSC SSBU.ogg|center]] <br> {{PAL}} [[File:Bowser Jr. Cheer Spanish PAL SSBU.ogg|center]]||[[File:Bowser Jr. Cheer Russian SSBU.ogg|center]]||[[File:Bowser Jr. Cheer Korean SSBU.ogg|center]]
|-
! scope="row"|Description
|Bow - ser! Jun - ior! || Bow - ser! Jun - ior! *claps 4 times* {{NTSC}} <br> Bow - sy! Bow - sy! {{PAL}} || Bow - ser! Mlad - shiy! || Koo - pa! Jun - ior!
|}
</div>
</div>

====Larry====
<div class="tabber">
<div class="tabbertab" title="English, Japanese/Chinese, Italian, Dutch, French">
{| class="wikitable" border="1" cellpadding="4" cellspacing="1"
|-
!{{{name|}}}
!Cheer (English)
!Cheer (Japanese/Chinese)
!Cheer (Italian)
!Cheer (Dutch)
!Cheer (French)
|-
! scope="row"|Cheer
|[[File:Larry Cheer English SSBU.ogg|center]]||[[File:Larry Cheer Japanese SSBU.ogg|center]]||[[File:Larry Cheer Italian SSBU.ogg|center]]||[[File:Larry Cheer Dutch SSBU.ogg|center]]||{{NTSC}} [[File:Larry Cheer French NTSC SSBU.ogg|center]] <br> {{PAL}} [[File:Larry Cheer French PAL SSBU.ogg|center]]
|-
! scope="row"|Description
|Lar - ry! || Lar - ry! || Lar - ry! *claps 3 times* || Lar - ry! *claps 2 times* || Allez Lar - ry! 
|}
</div>
<div class="tabbertab" title="German, Spanish, Russian, Korean">
{| class="wikitable" border="1" cellpadding="4" cellspacing="1"
|-
!{{{name|}}}
!Cheer (German)
!Cheer (Spanish)
!Cheer (Russian)
!Cheer (Korean)
|-
! scope="row"|Cheer
|[[File:Larry Cheer German SSBU.ogg|center]]||{{NTSC}} [[File:Larry Cheer Spanish NTSC SSBU.ogg|center]] <br> {{PAL}} [[File:Larry Cheer Spanish PAL SSBU.ogg|center]]||[[File:Larry Cheer Russian SSBU.ogg|center]]||[[File:Larry Cheer Korean SSBU.ogg|center]]
|-
! scope="row"|Description
|Lar - ry! || Lar - ry! Lar - ry! Lar - ry! Rah - Rah - Rah! {{NTSC}}<br> Mu - cho Lar - ry! Mu - cho Lar - ry! Eh! Eh! {{PAL}} || Lar - ry! *claps 3 times* || Lar - ry!
|}
</div>
</div>

====Roy====
<div class="tabber">
<div class="tabbertab" title="English, Japanese/Chinese, Italian, Dutch, French">
{| class="wikitable" border="1" cellpadding="4" cellspacing="1"
|-
!{{{name|}}}
!Cheer (English)
!Cheer (Japanese/Chinese)
!Cheer (Italian)
!Cheer (Dutch)
!Cheer (French)
|-
! scope="row"|Cheer
|[[File:Roy Koopa Cheer English SSBU.ogg|center]]||[[File:Roy Koopa Cheer Japanese SSBU.ogg|center]]||[[File:Roy Koopa Cheer Italian SSBU.ogg|center]]||[[File:Roy Koopa Cheer Dutch SSBU.ogg|center]]||{{NTSC}} [[File:Roy Koopa Cheer French NTSC SSBU.ogg|center]] <br> {{PAL}} [[File:Roy Koopa Cheer French PAL SSBU.ogg|center]]
|-
! scope="row"|Description
|Roy Roy Roy! || Roy Roy Roy! || Roy! Roy! *claps 3 times* || Rooooy! Roy! || Roy! Roy! Roy!
|}
</div>
<div class="tabbertab" title="German, Spanish, Russian, Korean">
{| class="wikitable" border="1" cellpadding="4" cellspacing="1"
|-
!{{{name|}}}
!Cheer (German)
!Cheer (Spanish)
!Cheer (Russian)
!Cheer (Korean)
|-
! scope="row"|Cheer
|[[File:Roy Koopa Cheer German SSBU.ogg|center]]||{{NTSC}} [[File:Roy Koopa Cheer Spanish NTSC SSBU.ogg|center]] <br> {{PAL}} [[File:Roy Koopa Cheer Spanish PAL SSBU.ogg|center]]||[[File:Roy Koopa Cheer Russian SSBU.ogg|center]]||[[File:Roy Koopa Cheer Korean SSBU.ogg|center]]
|-
! scope="row"|Description
|Roy! Roy! Roy! || Roy! Roy! Roy! Y da - le más! || Roy! Roy! Roy! || Roy! Roy! Roy!
|}
</div>
</div>

====Wendy====
<div class="tabber">
<div class="tabbertab" title="English, Japanese/Chinese, Italian, Dutch, French">
{| class="wikitable" border="1" cellpadding="4" cellspacing="1"
|-
!{{{name|}}}
!Cheer (English)
!Cheer (Japanese/Chinese)
!Cheer (Italian)
!Cheer (Dutch)
!Cheer (French)
|-
! scope="row"|Cheer
|[[File:Wendy Cheer English SSBU.ogg|center]]||[[File:Wendy Cheer Japanese SSBU.ogg|center]]||[[File:Wendy Cheer Italian SSBU.ogg|center]]||[[File:Wendy Cheer Dutch SSBU.ogg|center]]||{{NTSC}} [[File:Wendy Cheer French NTSC SSBU.ogg|center]] <br> {{PAL}} [[File:Wendy Cheer French PAL SSBU.ogg|center]]
|-
! scope="row"|Description
|Wen - dy! || Wen - dy! *claps 3 times* || Wen - dy! *claps 3 times* || Wa - wa! Wendy! Wa - wa! || Vas-y Wen - dy!
|}
</div>
<div class="tabbertab" title="German, Spanish, Russian, Korean">
{| class="wikitable" border="1" cellpadding="4" cellspacing="1"
|-
!{{{name|}}}
!Cheer (German)
!Cheer (Spanish)
!Cheer (Russian)
!Cheer (Korean)
|-
! scope="row"|Cheer
|[[File:Wendy Cheer German SSBU.ogg|center]]||{{NTSC}} [[File:Wendy Cheer Spanish NTSC SSBU.ogg|center]] <br> {{PAL}} [[File:Wendy Cheer Spanish PAL SSBU.ogg|center]]||[[File:Wendy Cheer Russian SSBU.ogg|center]]||[[File:Wendy Cheer Korean SSBU.ogg|center]]
|-
! scope="row"|Description
|Wen - dy! || Wen - dy! Wen - dy! Wen - dy! || Wen - dy! Wen - dy! || Wen - dy! *claps 2 times*
|}
</div>
</div>

====Iggy====
<div class="tabber">
<div class="tabbertab" title="English, Japanese/Chinese, Italian, Dutch, French">
{| class="wikitable" border="1" cellpadding="4" cellspacing="1"
|-
!{{{name|}}}
!Cheer (English)
!Cheer (Japanese/Chinese)
!Cheer (Italian)
!Cheer (Dutch)
!Cheer (French)
|-
! scope="row"|Cheer
|[[File:Iggy Cheer English SSBU.ogg|center]]||[[File:Iggy Cheer Japanese SSBU.ogg|center]]||[[File:Iggy Cheer Italian SSBU.ogg|center]]||[[File:Iggy Cheer Dutch SSBU.ogg|center]]</center>||{{NTSC}} [[File:Iggy Cheer French NTSC SSBU.ogg|center]] <br> {{PAL}} [[File:Iggy Cheer French PAL SSBU.ogg|center]]
|-
! scope="row"|Description
|Ig - gy! || Ig - gy! || Ig - gy! *claps 3 times* || Ig - gy! *claps 3 times* || Ig-gy brille!
|}
</div>
<div class="tabbertab" title="German, Spanish, Russian, Korean">
{| class="wikitable" border="1" cellpadding="4" cellspacing="1"
|-
!{{{name|}}}
!Cheer (German)
!Cheer (Spanish)
!Cheer (Russian)
!Cheer (Korean)
|-
! scope="row"|Cheer
|[[File:Iggy Cheer German SSBU.ogg|center]]||{{NTSC}} [[File:Iggy Cheer Spanish NTSC SSBU.ogg|center]] <br> {{PAL}} [[File:Iggy Cheer Spanish PAL SSBU.ogg|center]]||[[File:Iggy Cheer Russian SSBU.ogg|center]]||[[File:Iggy Cheer Korean SSBU.ogg|center]]
|-
! scope="row"|Description
|Ig - gy! || Ig - gy Ig - gy Ig - gy! Y da - le más! {{NTSC}}<br>E - se Ig - gy E - se Ig - gy Eh! Eh! {{PAL}} || Ig - gy! *claps 3 times* || Ig - gy!
|}
</div>
</div>

====Morton====
<div class="tabber">
<div class="tabbertab" title="English, Japanese/Chinese, Italian, Dutch, French">
{| class="wikitable" border="1" cellpadding="4" cellspacing="1"
|-
!{{{name|}}}
!Cheer (English)
!Cheer (Japanese/Chinese)
!Cheer (Italian)
!Cheer (Dutch)
!Cheer (French)
|-
! scope="row"|Cheer
|[[File:Morton Cheer English SSBU.ogg|center]]||[[File:Morton Cheer Japanese SSBU.ogg|center]]||[[File:Morton Cheer Italian SSBU.ogg|center]]||[[File:Morton Cheer Dutch SSBU.ogg|center]]||{{NTSC}} [[File:Morton Cheer French NTSC SSBU.ogg|center]] <br> {{PAL}} [[File:Morton Cheer French PAL SSBU.ogg|center]]
|-
! scope="row"|Description
|Mor - ton! || Moooorton! || Mor - ton! *claps 3 times* || Mmmm - Morton! || Mor - ton!
|}
</div>
<div class="tabbertab" title="German, Spanish, Russian, Korean">
{| class="wikitable" border="1" cellpadding="4" cellspacing="1"
|-
!{{{name|}}}
!Cheer (German)
!Cheer (Spanish)
!Cheer (Russian)
!Cheer (Korean)
|-
! scope="row"|Cheer
|[[File:Morton Cheer German SSBU.ogg|center]]||{{NTSC}} [[File:Morton Cheer Spanish NTSC SSBU.ogg|center]] <br> {{PAL}} [[File:Morton Cheer Spanish PAL SSBU.ogg|center]]||[[File:Morton Cheer Russian SSBU.ogg|center]]||[[File:Morton Cheer Korean SSBU.ogg|center]]
|-
! scope="row"|Description
|Mor - ton! || Morrrr - ton! || Mor - ton! || Mor - ton! *claps 3 times*
|}
</div>
</div>

====Lemmy====
<div class="tabber">
<div class="tabbertab" title="English, Japanese/Chinese, Italian, Dutch, French">
{| class="wikitable" border="1" cellpadding="4" cellspacing="1"
|-
!{{{name|}}}
!Cheer (English)
!Cheer (Japanese/Chinese)
!Cheer (Italian)
!Cheer (Dutch)
!Cheer (French)
|-
! scope="row"|Cheer
|[[File:Lemmy Cheer English SSBU.ogg|center]]||[[File:Lemmy Cheer Japanese SSBU.ogg|center]]||[[File:Lemmy Cheer Italian SSBU.ogg|center]]||[[File:Lemmy Cheer Dutch SSBU.ogg|center]]||{{NTSC}} [[File:Lemmy Cheer French NTSC SSBU.ogg|center]] <br> {{PAL}} [[File:Lemmy Cheer French PAL SSBU.ogg|center]]
|-
! scope="row"|Description
|Lem - my! || Lem - my! || Lem - my! *claps 3 times* || Lem - my! *claps 2 times* Lem - my! || Tous pour qui? Pour Lemmy!
|}
</div>
<div class="tabbertab" title="German, Spanish, Russian, Korean">
{| class="wikitable" border="1" cellpadding="4" cellspacing="1"
|-
!{{{name|}}}
!Cheer (German)
!Cheer (Spanish)
!Cheer (Russian)
!Cheer (Korean)
|-
! scope="row"|Cheer
|[[File:Lemmy Cheer German SSBU.ogg|center]]||{{NTSC}} [[File:Lemmy Cheer Spanish NTSC SSBU.ogg|center]] <br> {{PAL}} [[File:Lemmy Cheer Spanish PAL SSBU.ogg|center]]||[[File:Lemmy Cheer Russian SSBU.ogg|center]]||[[File:Lemmy Cheer Korean SSBU.ogg|center]]
|-
! scope="row"|Description
|Lem - my! || Lem - my *claps 2 times* || Lem - my! Lem - my! || Lem - my! Lem - my! Leeeem - my!
|}
</div>
</div>

====Ludwig====
<div class="tabber">
<div class="tabbertab" title="English, Japanese/Chinese, Italian, Dutch, French">
{| class="wikitable" border="1" cellpadding="4" cellspacing="1"
|-
!{{{name|}}}
!Cheer (English)
!Cheer (Japanese/Chinese)
!Cheer (Italian)
!Cheer (Dutch)
!Cheer (French)
|-
! scope="row"|Cheer
|{{NTSC}} [[File:Ludwig Cheer English NTSC SSBU.ogg|center]] <br> {{PAL}} [[File:Ludwig Cheer English PAL SSBU.ogg|center]]||[[File:Ludwig Cheer Japanese SSBU.ogg|center]]||[[File:Ludwig Cheer Italian SSBU.ogg|center]]||[[File:Ludwig Cheer Dutch SSBU.ogg|center]]||{{NTSC}} [[File:Ludwig Cheer French NTSC SSBU.ogg|center]] <br> {{PAL}} [[File:Ludwig Cheer French PAL SSBU.ogg|center]]
|-
! scope="row"|Description
|Lud - wig! || Lud - wig! || Lud - wig! *claps 3 times* || Lud - wig! || Pour Ludwig : hip hip hip!
|}
</div>
<div class="tabbertab" title="German, Spanish, Russian, Korean">
{| class="wikitable" border="1" cellpadding="4" cellspacing="1"
|-
!{{{name|}}}
!Cheer (German)
!Cheer (Spanish)
!Cheer (Russian)
!Cheer (Korean)
|-
! scope="row"|Cheer
|[[File:Ludwig Cheer German SSBU.ogg|center]]||{{NTSC}} [[File:Ludwig Cheer Spanish NTSC SSBU.ogg|center]] <br> {{PAL}} [[File:Ludwig Cheer Spanish PAL SSBU.ogg|center]]||[[File:Ludwig Cheer Russian SSBU.ogg|center]]||[[File:Ludwig Cheer Korean SSBU.ogg|center]]
|-
! scope="row"|Description
|Lud - wig! *claps 3 times* || Luuuud - wig! || Lud - wig! || Lu - Lud - wig!
|}
</div>
</div>

===[[Victory pose]]s===
*'''Left:''' Jumps out of the Clown Car, hops in celebration twice, then poses.
*'''Up:''' From the side of the screen, drives the Clown Car in its go-kart form, performs a donut before coming to a stop and pulls out a hammer (or a wand, if playing as a Koopaling).
*'''Right:''' Dismounts from the Clown Car using its left grabber claw and pats it with his right hand.
[[File:Victory! (Bowser and Bowser Jr.).ogg|thumb|A music piece based on the same melody as the ''Mario'' victory theme, but instead of a standard orchestral arrangement, the piece is played with slightly distorted electric guitars. It also sounds similar to the level clear theme of Bowser's sidequests in ''{{s|mariowiki|Paper Mario: The Thousand-Year Door}}''.]]
<gallery>
BowserJrVictoryPose1SSBU.gif
BowserJrVictoryPose2SSBU.gif
BowserJrVictoryPose3SSBU.gif
</gallery>

==In [[competitive play]]==
===Most historically significant players===
<!--This character has a ten player limit for this section. Before adding and/or removing a player, read these guidelines: https://www.ssbwiki.com/SmashWiki:Notability#%22Most_historically_significant_players%22_guidelines -->
''See also: [[:Category:Bowser Jr. players (SSBU)]]''

*{{Sm|Ketchup|USA}} - Although his placements at majors aren't as high as other Bowser Jr. players, he has some of the best wins among all the other Bowser Jr. players, having defeated {{Sm|Light|p=Connecticut}}, {{Sm|Cosmos}}, and {{Sm|Larry Lurr}}. He has also placed 9th at {{Trn|Mega Smash Mondays 240}} and 17th at both {{Trn|Thunder Smash 3: Clash of the Pandas}} and {{Trn|2GG: SoCal Chronicles 2020}}.
*{{Sm|Mutama|Japan}} - Despite being an online-exclusive player, he is considered one of the best Bowser Jr. players in Japan due to his strong online results, such as placing 1st at both [https://smashmate.net/tournament/3808/ Maesuma 177] and [https://smashmate.net/tournament/4182/ Tamisuma SP 230], 2nd at [https://smashmate.net/tournament/3888/ Tamisuma SP 214], 3rd at [https://smashmate.net/tournament/3310/ Tamisuma SP 189] and 5th at [https://smashmate.net/tournament/3570/ Tamisuma SP 200]. He has previously been ranked 2nd on the [https://smashmate.net/record/26/ 3rd] [[Smashmate]] SP ranking and 3rd on the [https://smashmate.net/record/33/ 10th SP ranking].
*{{Sm|Slime|p=Canada|Canada}} - The best Bowser Jr. player in Canada, placing 13th at {{Trn|HABBY Birthday 2019}}, 33rd at {{Trn|Get On My Level 2022}}, {{Trn|The Big House 10}}, and {{Trn|Battle of BC 5}}, and 49th at {{Trn|Frostbite 2020}} with wins over players such as {{Sm|Chronos}}, {{Sm|jw}}, and {{Sm|SuperGirlKels}}.
*{{Sm|Yoda Cage|USA}} - The best Bowser Jr. player in the post-online metagame and has placed higher at majors than any other Bowser Jr. player during this era, such as 13th at {{Trn|Glitch 8.5 - Konami Code}}, 17th at {{Trn|Let's Make Big Moves 2022}}, and 25th at {{Trn|Collision 2023}}. He has also defeated players such as {{Sm|Zomba}}, {{Sm|ApolloKage}}, and {{Sm|Cosmos}}.
*{{Sm|Young Eevey|Netherlands}} - The best Bowser Jr. player in the early metagame, and the only Bowser Jr. player to top 8 a major/supermajor event, placing 7th at {{Trn|Albion 4}}. He has also placed 13th at {{Trn|Thunder Smash 3: Clash of the Pandas}} and 25th at {{Trn|Glitch 7 - Minus World}} and has defeated players such as {{Sm|MuteAce}}, {{Sm|yeti}}, and {{Sm|Space}}.

===Tier placement and history===
Following the game's launch, the community immediately noticed that Bowser Jr. retained his weaknesses from ''Smash 4'' (poor grounded mobility, susceptible to gimps, lack of range and his playstyle being linear). Despite improvements towards his survivability, Clown Cannon (widely agreed to be one of the worst projectiles in ''Smash 4''), and his grab game, several players claimed that the improvements were not significant enough to compensate for his retained weaknesses. As such, Bowser Jr. was considered a low-tier character at best, with some even going as far as claiming him to be a bottom 3 character.

Early patches gave Bowser Jr. several buffs that improved Clown Cart and Bowser Jr.'s combo potential, allowing him to fare better in competitive play. His results by mid-2019 were also improving, peaking just outside the top 50 for July-December 2019, thanks to strong performances from players such as {{Sm|Young Eevey}} and {{Sm|Ketchup}}. Notably, Young Eevey placed 7th at Albion 4, the highest placement for a Bowser Jr. player at a major, while Ketchup picked up notable wins over several top players. Thanks to the buffs and improving results, players no longer considered Bowser Jr. as one of the worst characters in the game, but had reassessed him as a mid-tier.

Unfortunately for Bowser Jr., his playerbase began declining in the post-online metagame as his best players became less active or consistent. This was a trend with some of his newer players as well: although players such as {{Sm|Yoda Cage}} and {{Sm|TM7_ZAP}} found success at majors, their results were either inconsistent or they were seldom active. As such, Bowser Jr.'s representation slipped greatly into the bottom 10 by 2021; this decline was also reflected in his placement on the first tier list, where he was ranked 72nd at the very end of the mid-tier. Since then, his metagame had remained stagnant as his overall represented remained in or near the bottom 10. As such, his placement on the second tier list barely shifted, moving up to 70th at the top of D- tier due to falling opinions on a few other characters ranked above him.

=={{SSBU|Classic Mode}}: Mama Peach, Where Are You?==
[[File:SSBU Congratulations Bowser Jr.png|thumb|Bowser Jr.'s congratulations screen.]]
Most of Bowser Jr.'s opponents are princesses, some of which are teamed up with their love interest (or in Lucina's case, her father). The title refers to the event of ''{{s|mariowiki|Super Mario Sunshine}}'' where Bowser Jr. called Peach his "mama".

{|class="wikitable" style="text-align:center"
!Round!!Opponent!!Stage!!Music!!Notes
|-
|1||{{CharHead|Rosalina & Luma|SSBU|hsize=20px}}||[[Mario Galaxy]]||''{{SSBUMusicLink|Super Mario Bros.|Rosalina in the Observatory / Luma's Theme}}''||
|-
|2||{{CharHead|Lucina|SSBU|hsize=20px}} and {{CharHead|Chrom|SSBU|hsize=20px}}||[[Arena Ferox]]||''{{SSBUMusicLink|Fire Emblem|Prelude (Ablaze)}}''||
|-
|3||{{CharHead|Daisy|SSBU|hsize=20px}} and {{CharHead|Luigi|SSBU|hsize=20px}}||[[Mushroom Kingdom U]]||''{{SSBUMusicLink|Super Mario Bros.|Mario Tennis / Mario Golf}}''||
|-
|4||{{CharHead|Zelda|SSBU|hsize=20px}}||[[Hyrule Castle]]||''{{SSBUMusicLink|The Legend of Zelda|Saria's Theme}}''||
|-
|5||{{CharHead|Mii Brawler|SSBU|hsize=20px}} (x2), {{CharHead|Mii Gunner|SSBU|hsize=20px}} (x2), and {{CharHead|Mii Swordfighter|SSBU|hsize=20px}} (x2)||[[Peach's Castle]]||''{{SSBUMusicLink|Super Mario Bros.|Main Theme - Super Mario 64 (Remix)}}''||Horde Battle. The {{SSBU|Mii Fighter}}s all wear princess wigs.<br>
*Mii Brawler costume combinations: Peach's Crown and Vampire Garb, Daisy's Crown and [[Nia]] Outfit.
*Mii Gunner costumes: Princess's Crown and Wild West Wear, Peach's Crown and Steampunk Getup.
*Mii Swordfighter costumes: Daisy's Crown and [[Viridi]] Outfit, Princess's Crown and [[Ashley]] Outfit.
|-
|6||{{CharHead|Mario|SSBU|hsize=20px}} and {{CharHead|Peach|SSBU|hsize=20px}}||[[Delfino Plaza]]||''{{SSBUMusicLink|Super Mario Bros.|Delfino Plaza (Original)}}''||Items do not appear.
|-
|colspan="5"|[[Bonus Stage]]
|-
|Final||{{SSBU|Master Hand}}||{{SSBU|Final Destination}}||''{{SSBUMusicLink|Super Smash Bros.|Master Hand}}'' <small>(Less than 7.0 intensity)</small><br>''{{SSBUMusicLink|Super Smash Bros.|Master Hand / Crazy Hand}}'' <small>(Intensity 7.0 or higher)</small>||On intensity 7.0 and higher, {{SSBU|Crazy Hand}} fights alongside Master Hand.
|}

[[Credits]] roll after completing Classic Mode. Completing it as Bowser Jr. has ''{{SSBUMusicLink|Super Mario Bros.|Delfino Plaza (Remix)}}'' accompany the credits.
{{clr}}

==Role in [[World of Light]]==
[[File:WoL-58BowserJr.jpg|thumb|Finding Bowser Jr. in World of Light|left]]
While Bowser Jr. and the Koopalings do not appear in the World of Light opening cutscene, they were all vaporized and later imprisoned alongside the rest of the fighters (except {{SSBU|Kirby}}) when Galeem unleashed his beams of light.

Bowser Jr. and the Koopalings were among the many fighters that fell under [[Dharkon]]'s control upon Galeem's first defeat. Bowser Jr. is found in one of two alternating pathways on the Triforce of Power segment of the [[Sacred Land]] sub-area, guarded by various Legendary spirits.

As a side note, once Bowser Jr. is rescued, the Koopalings (due to their status of being alternate characters of Bowser Jr.), will have been 'rescued' as well, resulting in them also being available as playable characters within the story.
{{clrl}}

===Fighter Battle===
{|class="wikitable" style="width:100%;"
|-
!style="width:5%;"|No.
!style="width:5%;"|Image
!Name
!Type
!Power
!Stage
!Music
|-
|58
|[[File:Bowser Jr. SSBU.png|center|108x108px]]
|Bowser Jr.
|{{SpiritType|Grab}} <center>{{color|#17ba17|Grab}}</center>
|12,500
|[[Mushroomy Kingdom]] ([[Ω form]])
|''{{SSBUMusicLink|Super Mario Bros.|Fortress Boss - Super Mario Bros. 3}}''
|}
{{clr}}

==[[Spirit]]s==
Bowser Jr.'s fighter spirit can be obtained by completing {{SSBU|Classic Mode}}. It is also available periodically for purchase in the shop for 300 Gold, but only after Bowser Jr. has been unlocked. Unlocking Bowser Jr. in World of Light allows the player to preview the first spirit below in the Spirit List under the name "???". As a fighter spirit, it cannot be used in Spirit Battles and is purely aesthetic. Each of the Koopalings possess their own fighter spirits, which can only be obtained by purchase in the shop. Each fighter spirit has an alternate version that replaces them with their artwork in ''Ultimate''.

Bowser Jr. also appears as a primary spirit in the form of Shadow Mario.

<center>
<gallery>
SSBU spirit Bowser Jr..png|10. '''''Bowser Jr.'''''
SSBU spirit Iggy.png|11. '''Iggy'''
SSBU spirit Wendy.png|12. '''Wendy'''
SSBU spirit Lemmy.png|13. '''Lemmy'''
SSBU spirit Roy (Super Mario Bros.).png|14. '''Roy (Super Mario Bros.)'''
SSBU spirit Larry.png|15. '''Larry'''
SSBU spirit Ludwig.png|16. '''Ludwig'''
SSBU spirit Morton.png|17. '''Morton'''
SSBU spirit Shadow Mario.png|70. Shadow Mario
</gallery>
</center>

==In Spirit Battles==
===As the main opponent===
{|class="wikitable sortable" style="width:100%;"
! colspan=4|Spirit
! colspan=7|Battle parameters
! colapan=1|Inspiration
|-
! style="width:5%;"|No.
! style="width:5%;"|Image
! Name
! Series
! Enemy Fighter(s)
! style="width:5%;"|Type
! style="width:5%;"|Power
! Stage
! Rules
! Conditions
! Music
! Character
|-
|39
|{{SpiritTableName|Lakitu & Spiny|link=y|size=64}}
|''Super Mario'' Series
|•[[Bowser Jr. (SSBU)|Iggy]] {{Head|Bowser Jr.|g=SSBU|s=20px|cl=Iggy}}<br>•Tiny {{SSBU|Bowser}} {{Head|Bowser|g=SSBU|s=20px|cl=Red}}×8
|{{SpiritType|Grab}}
|3,400
|{{SSB|Mushroom Kingdom}}
|N/A
|•Defeat an army of fighters
|{{SSBUMusicLink|Super Mario Bros.|Ground Theme - Super Mario Bros.}}
|Lakitu
|-
|57
|{{SpiritTableName|Tatanga|size=64}}
|''Super Mario Land'' Series
|•[[Bowser Jr. (SSBU)|Morton]] {{Head|Bowser Jr.|g=SSBU|s=20px|cl=Morton}}
|{{SpiritType|Shield}}
|3,800
|[[Mario Galaxy]] ([[Battlefield form]])
|N/A
|•The enemy starts the battle with a [[Super Scope]]
|{{SSBUMusicLink|Super Mario Bros.|Underground Theme - Super Mario Land}}
|
|-
|70
|{{SpiritTableName|Shadow Mario|size=64}}
|''Super Mario'' Series
|•{{SSBU|Bowser Jr.}} {{Head|Bowser Jr.|g=SSBU|s=20px}}
|{{SpiritType|Neutral}}
|9,800
|[[Delfino Plaza]] ([[Ω form]])
|•Sudden Final Smash<br>•Hazard: Sticky Floor
|•The floor is sticky<br>•The enemy will suddenly have a Final Smash after a little while<br>•The enemy's FS Meter charges quickly
|{{SSBUMusicLink|Super Mario Bros.|Delfino Plaza (Remix)}}
|
|-
|106
|{{SpiritTableName|Fawful|size=64}}
|''Mario & Luigi'' Series
|•[[Bowser Jr. (SSBU)|Iggy]] {{Head|Bowser Jr.|g=SSBU|s=20px|cl=Iggy}} (140 HP)<br>•{{SSBU|R.O.B.}} {{Head|R.O.B.|g=SSBU|s=20px|cl=Green}} (140 HP)
|{{SpiritType|Neutral}}
|3,700
|[[Prism Tower]]
|N/A
|•[[Stamina battle]]<br>•The enemy starts the battle with a [[Rocket Belt]]
|{{SSBUMusicLink|Super Mario Bros.|The Grand Finale}}
|
|-
|168
|{{SpiritTableName|Kalypso|size=64}}
|''Donkey Kong: Barrel Blast''
|•[[Bowser Jr. (SSBU)|Wendy]] Team {{Head|Bowser Jr.|g=SSBU|s=20px|cl=Wendy}}×4
|{{SpiritType|Shield}}
|1,800
|[[Kongo Falls]]
|N/A
|•The enemy starts the battle with a Rocket Belt<br>•The enemy has increased move speed
|{{SSBUMusicLink|Donkey Kong|Boss 2 - DK: Jungle Climber}}
|
|-
|346
|{{SpiritTableName|Heavy Lobster|size=64}}
|''Kirby'' Series
|•[[Bowser Jr. (SSBU)|Lemmy]] {{Head|Bowser Jr.|g=SSBU|s=20px|cl=Lemmy}}
|{{SpiritType|Shield}}
|3,600
|[[Halberd]]
|•Item: [[Fire Flower]]
|•The enemy starts the battle with a Fire Flower
|{{SSBUMusicLink|Kirby|Meta Knight's Revenge}}
|
|-
|714
|{{SpiritTableName|Pandora|size=64}}
|''Kid Icarus'' Series
|•[[Bowser Jr. (SSBU)|Wendy]] {{Head|Bowser Jr.|g=SSBU|s=20px|cl=Wendy}}<br>•Ally: {{SSBU|Dark Pit}} {{Head|Dark Pit|g=SSBU|s=20px|cl=Blue}}
|{{SpiritType|Grab}}
|3,500
|[[Kalos Pokémon League]] ([[Ω form]])
|•[[Bob-omb]] Festival
|•Join forces with a CPU ally<br>•Bob-ombs will rain from the sky after a little while<br>•Explosion attacks aren't as effective against the enemy
|{{SSBUMusicLink|Kid Icarus|Dark Pit's Theme}}
|
|-
|776
|{{SpiritTableName|Dr. Eggman|link=y|size=64}}
|''Sonic The Hedgehog'' Series
|•[[Bowser Jr. (SSBU)|Roy]] {{Head|Bowser Jr.|g=SSBU|s=20px|cl=Roy}}<br>•Metal {{SSBU|Sonic}} {{Head|Sonic|g=SSBU|s=20px|cl=Green}}
|{{SpiritType|Grab}}
|13,200
|[[Green Hill Zone]]
|•[[Bob-omb]] Festival<br>•Item: Shooting Types
|•Bob-ombs will rain from the sky after a little while<br>•The enemy's shooting items have increased power<br>•Items will be pulled toward the enemy
|{{SSBUMusicLink|Sonic The Hedgehog|Green Hill Zone}}
|
|-
|846
|{{SpiritTableName|Kapp'n|link=y|size=64}}
|''Animal Crossing'' Series
|•[[Bowser Jr. (SSBU)|Iggy]] {{Head|Bowser Jr.|g=SSBU|s=20px|cl=Iggy}}
|{{SpiritType|Grab}}
|9,600
|[[Wuhu Island]] (Rocks at sea)
|•Buoyancy Reduced<br>•Hazard: Heavy Wind
|•You can't swim<br>•Dangerously high winds are in effect
|{{SSBUMusicLink|Animal Crossing|Kapp'n's Song}}
|
|-
|913
|{{SpiritTableName|Tron Bonne|size=64}}
|''Mega Man Legends'' Series
|•[[Bowser Jr. (SSBU)|Wendy]] {{Head|Bowser Jr.|g=SSBU|s=20px|cl=Wendy}}<br>•Tiny {{SSBU|R.O.B.}} {{Head|R.O.B.|g=SSBU|s=20px|cl=Yellow}}×2
|{{SpiritType|Grab}}
|3,600
|[[Wuhu Island]] (Talon Rock)
|N/A
|•Take your strongest team into this no-frills battle
|{{SSBUMusicLink|Mega Man|We're Robots (Dr. Wily Stage 2)}}
|
|-
|958
|{{SpiritTableName|Riki (Xenoblade Chronicles)|customname=[[Riki]] (Xenoblade Chronicles)|size=64}}
|''Xenoblade Chronicles'' Series
|•[[Bowser Jr. (SSBU)|Roy]] {{Head|Bowser Jr.|g=SSBU|s=20px|cl=Roy}}<br>•{{SSBU|Shulk}} {{Head|Shulk|g=SSBU|s=20px|cl=Yellow}}
|{{SpiritType|Neutral}}
|8,000
|[[Gaur Plain]] ([[Ω form]])
|•Earthquake<br>•Flowery<br>•Assist Trophy Enemies (Riki)
|•The enemy's special moves have increased power<br>•Hostile assist trophies will appear<br>•You constantly take minor damage after a little while
|{{SSBUMusicLink|Xenoblade Chronicles|Gaur Plain}}
|
|-
|1,040
|{{SpiritTableName|Murch|size=64}}
|''Splatoon'' Series
|•[[Bowser Jr. (SSBU)|Morton]] {{Head|Bowser Jr.|g=SSBU|s=20px|cl=Morton}}
|{{SpiritType|Attack}}
|3,700
|[[Saffron City]]
|•Attack Power ↑<br>•Move Speed ↑<br>•Item: [[Unira]]
|•The enemy has increased move speed<br>•The enemy has increased attack power after a little while
|{{SSBUMusicLink|Splatoon|Inkoming!}}
|
|-
|1,133
|{{SpiritTableName|MONSTER|size=64}}
|''Famicom Grand Prix II: 3D Hot Rally'' Series
|•Giant [[Bowser Jr. (SSBU)|Roy]] Team {{Head|Bowser Jr.|g=SSBU|s=20px|cl=Roy}}{{Head|Bowser Jr.|g=SSBU|s=20px|cl=Morton}}{{Head|Bowser Jr.|g=SSBU|s=20px|cl=Iggy}}{{Head|Bowser Jr.|g=SSBU|s=20px|cl=Wendy}}
|{{SpiritType|Attack}}
|1,900
|[[Mushroomy Kingdom]]
|N/A
|•The enemy favors side specials<br>•The enemy is giant
|{{SSBUMusicLink|Other|Title Theme - 3D Hot Rally}}
|
|-
|1,134
|{{SpiritTableName|Tank & Infantry|link=y|size=64}}
|''Famicom Wars'' Series
|•Metal [[Bowser Jr. (SSBU)|Iggy]] {{Head|Bowser Jr.|g=SSBU|s=20px|cl=Iggy}}<br>•{{SSBU|Snake}} {{Head|Snake|g=SSBU|s=20px|cl=Green}}×2
|{{SpiritType|Attack}}
|3,900
|[[Gerudo Valley]]
|N/A
|•The enemy favors neutral specials<br>•The enemy is metal
|{{SSBUMusicLink|Other|Garage}}
|Tank
|-
|1,151
|{{SpiritTableName|F-Type|size=64}}
|''Stunt Race FX''
|•[[Bowser Jr. (SSBU)|Roy]] {{Head|Bowser Jr.|g=SSBU|s=20px|cl=Roy}}
|{{SpiritType|Shield}}
|2,200
|[[Figure-8 Circuit]]
|N/A
|•Timed battle (1:00)<br>•The enemy has increased move speed and reduced weight
|{{SSBUMusicLink|Other|Title Theme - 3D Hot Rally}}
|
|-
|1,152
|{{SpiritTableName|Tractor Trailer|size=64}}
|''Stunt Race FX''
|•[[Bowser Jr. (SSBU)|Morton]] {{Head|Bowser Jr.|g=SSBU|s=20px|cl=Morton}}
|{{SpiritType|Attack}}
|1,900
|[[Moray Towers]]
|N/A
|•The enemy's side special has increased power<br>•The enemy favors side specials
|{{SSBUMusicLink|Other|Excite Truck}}
|
|-
|1,318
|{{SpiritTableName|Toy-Con Car|size=64}}
|''Nintendo Labo'' Series
|•{{SSBU|Bowser Jr.}} Team {{Head|Bowser Jr.|g=SSBU|s=20px}}{{Head|Bowser Jr.|g=SSBU|s=20px|cl=Larry}}{{Head|Bowser Jr.|g=SSBU|s=20px|cl=Roy}}{{Head|Bowser Jr.|g=SSBU|s=20px|cl=Wendy}}{{Head|Bowser Jr.|g=SSBU|s=20px|cl=Iggy}}{{Head|Bowser Jr.|g=SSBU|s=20px|cl=Morton}}{{Head|Bowser Jr.|g=SSBU|s=20px|cl=Lemmy}}{{Head|Bowser Jr.|g=SSBU|s=20px|cl=Ludwig}} (60 HP)
|{{SpiritType|Shield}}
|4,200
|[[Wuhu Island]] (Frisbee Dog Park)
|N/A
|•[[Stamina battle]]<br>•The enemy favors side specials<br>•The enemy can deal damage by dashing into you
|{{SSBUMusicLink|Other|Title Theme - 3D Hot Rally}}
|
|-
|1,416
|{{SpiritTableName|Mechanica|link=y|size=64}}
|''ARMS''
|•Giant [[Bowser Jr. (SSBU)|Wendy]] {{Head|Bowser Jr.|g=SSBU|s=20px|cl=Wendy}} (100 HP)
|{{SpiritType|Grab}}
|3,400
|[[Spring Stadium]]
|N/A
|•The enemy has super armor but moves slower<br>•Stamina battle<br>•The enemy is giant
|{{SSBUMusicLink|ARMS|Scrapyard}}
|
|-
|1,445
|{{SpiritTableName|Cait Sith|size=64}}
|''FINAL FANTASY'' Series
|•[[Bowser Jr. (SSBU)|Roy]] {{Head|Bowser Jr.|g=SSBU|s=20px|cl=Roy}}<br>•{{SSBU|Mr. Game & Watch}} {{Head|Mr. Game & Watch|g=SSBU|s=20px}}×3
|{{SpiritType|Neutral}}
|1,700
|[[New Pork City]] ([[Ω form]])
|N/A
|•Defeat the main fighter to win
|{{SSBUMusicLink|Other|PictoChat}}
|
|}

===As a minion===
{|class="wikitable sortable" style="width:100%;"
! colspan=4|Spirit
! colspan=7|Battle parameters
! colspan=1|Inspiration
|-
! style="width:5%;"|No.
! style="width:5%;"|Image
! Name
! Series
! Enemy Fighter(s)
! style="width:5%;"|Type
! style="width:5%;"|Power
! Stage
! Rules
! Conditions
! Music
! Character
|-
|450
|{{SpiritTableName|Kangaskhan|size=64}}
|''Pokémon'' Series
|•{{SSBU|Bowser}} {{Head|Bowser|g=SSBU|s=20px|cl=Yellow}}<br>•[[Bowser Jr. (SSBU)|Larry]] {{Head|Bowser Jr.|g=SSBU|s=20px|cl=Larry}}
|{{SpiritType|Grab}}
|3,700
|[[Windy Hill Zone]]
|N/A
|•Defeat the main fighter to win<br>•Reinforcements will appear during the battle
|{{SSBUMusicLink|Pokémon|Main Theme - Pokémon Red & Pokémon Blue (Brawl)}}
|Baby {{s|bulbapedia|Kangaskhan}}
|-
|700
|{{SpiritTableName|Turtle Bridge|size=64}}
|''Game & Watch'' Series
|•{{SSBU|Mr. Game & Watch}} {{Head|Mr. Game & Watch|g=SSBU|s=20px}}<br>•{{SSBU|Squirtle}} {{Head|Squirtle|g=SSBU|s=20px|cl=Purple}}<br>•[[Bowser Jr. (SSBU)|Morton]] {{Head|Bowser Jr.|g=SSBU|s=20px|cl=Morton}}<br>•{{SSBU|Bowser}} {{Head|Bowser|g=SSBU|s=20px|cl=Grey}}
|{{SpiritType|Shield}}
|1,700
|[[Flat Zone X]] (hazards off)
|N/A
|•The enemy favors back air attacks
|{{SSBUMusicLink|Game & Watch|Flat Zone}}
|[[mariowiki:Turtle Bridge|Turtle]]
|-
|1,472
|{{SpiritTableName|Giga Cat Mario|size=64}}
|''Super Mario'' Series
|•Giant {{SSBU|Mii Brawler}} {{Head|Mii Brawler|g=SSBU|s=20px}} (Moveset [[Flashing Mach Punch|2]][[Burning Dropkick|2]][[Thrust Uppercut|3]][[Feint Jump|2]], Cat Hat, Cat Suit)<br>•{{SSBU|Bowser Jr.}} {{Head|Bowser Jr.|g=SSBU|s=20px}}
|{{SpiritType|Shield}}
|3,900
|[[Find Mii]] ([[Ω form]])
|N/A
|•Defeat the main fighter to win<br>•The enemy is giant
|{{SSBUMusicLink|Super Mario Bros.|The Great Tower Showdown 2}}
|{{s|mariowiki|Bowser Jr.}}
|}

==[[Alternate costume (SSBU)#Bowser Jr.|Alternate costumes]]==
Instead of alternate color schemes, Bowser Jr.'s [[alternate costume]]s consist of the [[Koopalings]]. Bowser Jr.'s Junior Clown Car is the only one with black eyes and horizontal orange "eye paint", while the Koopalings' Clown Cars have yellow mechanical eyes with vertical black "eye paint". All of the Koopalings have their own models, voice clips, and crowd cheers. They have their [[Boxing Ring]] titles in English and other European languages, but they all share the same Boxing Ring title in Asian languages, which translates to "All-Purpose Chariot."

{|style="margin:1em auto 1em auto;text-align:center"
|-
|colspan=8|[[File:Bowser Jr. Palette (SSBU).png|link=Palette swap (SSBU)#Bowser Jr.|1000px]]
|-
|{{Head|Bowser Jr.|g=SSBU|s=50px}}
|{{Head|Bowser Jr.|g=SSBU|s=50px|cl=Larry}}
|{{Head|Bowser Jr.|g=SSBU|s=50px|cl=Roy}}
|{{Head|Bowser Jr.|g=SSBU|s=50px|cl=Wendy}}
|{{Head|Bowser Jr.|g=SSBU|s=50px|cl=Iggy}}
|{{Head|Bowser Jr.|g=SSBU|s=50px|cl=Morton}}
|{{Head|Bowser Jr.|g=SSBU|s=50px|cl=Lemmy}}
|{{Head|Bowser Jr.|g=SSBU|s=50px|cl=Ludwig}}
|}

==Gallery==
<gallery>
SSBU Bowser Jr. Number.png|Bowser Jr.'s fighter card.
Bowser Jr. unlock notice SSBU.jpg|Bowser Jr.'s unlock notice.
SSBUWebsiteBowserJr1.jpg|Bowser Jr. [[idling]] on [[Onett]].
SSBUWebsiteBowserJr2.jpg|Charging his [[forward smash]] on [[3D Land]].
SSBUWebsiteBowserJr3.jpg|Performing his [[dash attack]] on [[Princess Peach's Castle]].
SSBUWebsiteBowserJr4.jpg|[[Jab]]bing at {{SSBU|Villager}} on [[Boxing Ring]].
SSBUWebsiteBowserJr5.jpg|Performing his forward tilt towards [[food|tempura shrimp]] on [[Tomodachi Life]].
SSBUWebsiteBowserJr6.jpg|Roy, Iggy, Larry, and Ludwig on [[Wuhu Island]].
SSBUWebsite8.jpg|Taunting with Lemmy, Wendy, and Morton on Tomodachi Life.
SSBUWebsiteSnake4.jpg|Idling next to {{SSBU|Snake}} on Tomodachi Life.
SSBUTwitterAlucard2.png|Struck by [[Alucard]] on [[Castle Siege]].
</gallery>

===Fighter Showcase Video===
{{#widget:YouTube|id=fZ2dm9EoJfE}}

==Trivia==
*The "Everyone is Here!" trailer features a visual glitch: when [[Lemmy]] uses his down [[taunt]], his face disappears for a few frames at the end of the animation.
**The [[Junior Clown Car]] also shows a visual glitch, with two mouths overlapping each other when [[Ludwig]] is seen falling off a ledge.
*The render of Lemmy resembles [[mariowiki:File:Lemmy_Koopa_NSMBU.png|artwork of him]] from ''New Super Mario Bros. U'', which is the same artwork used for his fighter spirit, and he is the only Koopaling to be completely out of the Junior Clown Car.
**Similarly, the render of Wendy resembles an [[mariowiki:File:WendyKoopa2 SMB3.png|illustration of her]] from ''{{s|mariowiki|Super Mario World}}''.
*Bowser Jr., Yoshi, {{SSBU|R.O.B.}}, and {{SSBU|Mr. Game & Watch}} are the only characters who used their default costumes in one of the spirit battles present at the game's initial release. In Bowser Jr.'s case, it is because of the Shadow Mario spirit.
**Despite that, there's no proper battle against a default Bowser Jr. in World of Light outside of himself because the only Spirit Battle in which he is present (Shadow Mario) is absent, instead finding puppet fighters of the Koopalings. The only exception to this are the false Bowser Jr.s created during battles involving Dharkon. This also applies to {{SSBU|Cloud}}.
***Additionally, Ludwig was the only Koopaling not present in any spirit battle until the DLC Toy-Con Car Spirit was introduced.
***Alongside Mr. Game & Watch, R.O.B and Yoshi., Bowser Jr. is one of the few characters with a Spirit battle where all of his alternate costumes appear in a single Spirit fight.
* Prior to version 1.1.0, Bowser Jr.'s airdodge behaved exactly how it did in ''Smash 4'' when using it out of [[Abandon Ship!]], making him the only character to have been capable of performing multiple airdodges without touching the ground or getting hit in any version of ''Ultimate''.
*When the game's speed is slowed down, Bowser Jr.'s Final Smash becomes noticeably more effective, hitting more times and dealing more damage. At 1/4 speed it potentially becomes one of the strongest Final Smashes in the game.
*Bowser Jr., {{SSBU|Banjo & Kazooie}}, {{SSBU|Pyra}}/{{SSBU|Mythra}}, and {{SSBU|Kazuya}} are the only characters whose artworks on all alternate costumes on the official website do not cast a shadow.
*Bowser Jr. is the only character to have motion blur in their render (at the Clown Car's propeller).
**Lemmy is the only Koopaling without motion blur in his render.
*In the Sound Test, Larry is the only Koopaling with one less voice clip than Bowser Jr. and the other Koopalings. This is due to both his teching and carrying being the same voice clip.
**Morton also had this distinction in ''Smash 4''.
*If Bowser Jr.'s right-inputted victory pose is performed by any Koopaling besides Roy, the propeller will stop after looping once during the post-animation.<ref>https://youtu.be/J0531h9USmI?t=1710</ref>
**A similar situation also occurred during Bowser Jr.'s clapping animation on the No Contest screen in ''Smash 4''.
*Even though Morton's eye mark has been changed to a lighter gray in this game, his stock icon still shows it as the dark gray it was in ''Smash 4''.
*When the [[Franklin Badge]] or [[Screw Attack]] items are equipped, if Bowser Jr. does his side taunt, the item will clip through the clown car. This also applies to the Koopalings.

==References==
{{reflist}}

{{SSBUCharacters}}
{{Mario universe}}
[[Category:Bowser Jr. (SSBU)| ]]
[[Category:Spirits]]
[[es:Bowsy (SSBU)]]
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