Like Samus, Dark Samus is a heavyweight. She is a floaty character with slightly below average walking and dashing speeds, average air speed, above average air acceleration, high jump height and slow falling speed. These attributes grant her an easier time chasing aerial opponents and forcing air dodges, yet also cause her to be juggled rather easily. When combined with her few reliable landing options and slow falling speed, opponents will also have more time to punish Dark Samus as she attempts to return to the stage.
Similarly to Samus, Dark Samus' moveset consists of playing defensively, as she uses her projectiles to space, rack up damage from a distance and pressure shields. Charge Shot is her most consistent KOing option out of her special moves when fully charged, due to its speed and power. Missile is mostly used for spacing, due to both its Homing and Super variants being extremely inefficient at KOing, while Bomb grants Samus various mix-ups and can aid her recovery. However, Missile and Bomb also possess valuable utility, in that they can guarantee a shield break when used in conjunction with a sufficiently charged Charge Shot or a sweetspotted back aerial. Lastly, Screw Attack is a decent out of shield option, a KOing option near the upper blast line and a viable combo finisher from aerial combo strings.
In addition, Dark Samus has a strong air game. The changes to air dodges have benefitted her overall, as they notably improve her ability to edgeguard (especially with moves such as forward aerial or her renowed Charge Shot), while she isn't hindered as much due to her fast air speed, the ability to stall mid-air using her Bombs, and her Grapple Beam tether recovery's long range. All of Dark Samus' aerials have no more than 20 frames of landing lag, and her back aerial is one of her best moves courtesy of its power, damage output, speed and range. Her down aerial can be a powerful meteor smash, forward aerial is a good pressuring tool due to its long duration, and up aerial is an excellent combo option. Lastly, her neutral aerial is a viable KOing option. When coupled with her high jumps, Dark Samus' air game is also potent while she is off-stage, as she can recover from nearly anywhere on the stage, stay in position for longer periods of time due to her floatiness, or bait the opponent by stalling in the air and punishing edge-guard attempts.
Dark Samus' grab game is also somewhat useful, as her Grapple Beam has impressive range, doubles as a tether recovery and has very little landing lag. Down throw is very useful for starting combos that deal respectable damage and can be used with her neutral, forward and up aerials at varying percentages. Many of her combos can rack up more than 30% and when using platforms to her advantage, or string together multiple times and then be finished with Screw Attack, leading to a KO or dealing 40%-50% at the very least. Up throw has decent to good KO power, becoming Dark Samus' strongest throw. Lastly, forward and back throw can KO earlier at the ledge.
However, Dark Samus shares similar flaws to Samus. Dark Samus' ground game is mediocre overall as her smash attacks are punishable, with only her forward smash being a fairly reliable KOing option due to its quick start-up lag. Her neutral attack is very mediocre, which is noticeably exemplified in its inability to connect at high percentages and thus limits Dark Samus' anti-pressuring ability. Due to this and her average dashing speed, most Dark Samus players will often find themselves in the air, where her strengths lie.
Dark Samus also has issues with her recovery. Her grab aerial has very long range, her jumps are among the highest in the game, Screw Attack is fast and hard to punish, and Bomb jumping provides infinite horizontal recovery, but they are all offset by Screw Attack's only average distance, Bomb's high ending lag in the air and Dark Samus' only average air speed and reliance on her grab aerial to grab ledges from a distance. Altogether, this results in her recovery being slightly slow, linear and predictable.
Overall, Dark Samus is a character that performs best when using her projectiles and grab aerial for spacing in order to set up combos and either finish off pressured opponents off-stage, or KO them outright with Charge Shot. Unlike the majority of veterans, Dark Samus' optimal playstyle is highly unorthodox; as she falls short in regard to zoning-exclusive or melee-exclusive offense, success with Dark Samus requires careful, calculated use of her various tools to keep momentum in her favor. As such, she is a character that is hard to master, but greatly rewards patient and calculated play.
As with certain other Echo Fighters, Dark Samus is nearly identical gameplay-wise to Samus, with largely aesthetic differences. However, she has many basic animations that are different from Samus, a more standard roll which does not involve turning into a Morph Ball, electric effects instead of fire effects for most of Samus's fire-based moves, and different models for both the Morph Ball and Missile. However, Dark Samus's small advantages over Samus (such as a slightly faster roll) are considered to be less situational than Samus's small advantages over Dark Samus (such as the ability to detonate enemy bombs with her flame properties, larger shield size, or a smaller hurtbox after rolling). As such, Dark Samus is commonly agreed to be a straight upgrade from Samus, though the gameplay differences are so marginal that it is ultimately up to preference over which character to choose from.
As with all other Echo Fighters, Dark Samus has different taunts and victory animations.
Dark Samus has a different victory theme, shared with Ridley.
Dark Samus's No Contest animation is slightly different.
Dark Samus's on-screen appearance has her warp onto the stage from a dark portal.
Dark Samus has many animations that are different from Samus, which extends to her idle, walking, dashing, double jumping, perfect shield, and dodge animations. Additionally, these animations visually appear floatier than Samus's equivalents, similar to Mewtwo, Rosalina & Luma and Bowser Jr.
However, she briefly assumes Samus's idle stance when losing her final stock in Stamina Mode by a weak attack.
Dark Samus's arm cannon splits apart and grows Phazon tendrils for some moves, such as her grab, Missiles, forward smash, and Final Smash.
Dark Samus's Arm Cannon-based attacks like down tilt, up smash and forward aerial use dark and neon blue clouds instead of orange explosions.
Samus's moves that possess flame effects (except for Missile and Bomb) have been changed into electric effects for Dark Samus. This changes how their respective moves interact with others, such as Dark Samus being unable to detonate other characters' bombs with her equivalent moves, and being able to hurt Olimar's Red Pikmin with them but not his Yellow Pikmin. Those moves are given a lower hitlag multiplier compared to Samus's to make them consistent between the two characters.
Dark Samus's shield is slightly smaller (12.5 → 12), and she stands in a more upright stance, with the shield centered slightly higher. This makes her easier to shield poke, especially with low attacks.
However, Dark Samus's right arm is briefly intangible when activating and deactivating her shield.
Both of Dark Samus's rolls have less ending lag than Samus's (FAF 35 → 32 (forward), 40 → 37 (back)).
However, Dark Samus is more vulnerable during ending lag due to her larger hurtboxes when rolling.
Dark Samus does not transform into a Morph Ball when rolling or spin while jumping. This makes her hurtbox larger during those animations.
Dark Samus's initial dash turnaround animation starts one frame faster than Samus's does (3 frames → 2), making her retreat slightly faster. Notably, she is the only fighter with this attribute.
Dark Samus has a longer duration in transitioning into her running animation when performing a pivot dash (12 frames → 15). This extends the length of her dash dance, but increases the lag on a turnaround dash before it can be canceled into certain options, such as shielding.
Forward tilt's foot trail visual commences one frame later on Dark Samus's forward tilt, no longer overtaking her foot's position in the kick.
Dark Samus's dash attack has an altered animation where Dark Samus hovers in midair. Additionally, Dark Samus does not use her jet boosters during the animation.
All of Dark Samus's smash attacks have altered animations.
This slightly influences the horizontal reach of all versions of forward smash, with the unangled version having marginally less horizontal reach, while the up and down angled versions have marginally increased horizontal reach.
This allows up smash to hit shorter opponents more reliably than Samus's version.
However, as a result, it KOs grounded opponents very slightly later.
Forward throw can KO slightly earlier at the very edge of a platform or stage due to Dark Samus's body being able to go past ledges during her throw animation.
Charge Shot has an altered animation where Dark Samus performs the move one-handed. This results in the projectile being fired at a slightly lower elevation, but her hurtbox is taller during the animation compared to Samus's version, making her easier to hit. The change in animation is reflected when Kirby copies this move, but his version of Dark Samus's Charge Shot is actually fired at a slightly higher elevation compared to his version of Samus's Charge Shot.
This allows Charge Shot to hit low-profiling opponents more easily, such as a crouching Pichu or Pikachu hanging from the ledge.
However, this makes it slightly easier for opponents to jump over the projectile.
Charge Shot is mostly black and dark blue, with tendrils extending from the edges.
Dark Samus's landing lag animation is different, as she twirls while still curled up and hovers slightly above the ground. This makes her hurtbox smaller and harder to hit, while also potentially allowing her to dodge some attacks with low-reaching hitboxes.
Bug: Grounded Screw Attack covers slightly less vertical distance, no longer being able to reach the top platform of Yoshi's Story.
9.0.1
Fixed an issue in which Dark Samus could fall though the stage when breaking Steve's blocks.
9.0.2
Fixed an issue where Dark Samus' grounded up special gained slightly less height in the first few frames, resulting in it gaining less height overall than intended.
A left-handed jab followed by a forearm club with the Arm Cannon. Despite dealing above-average damage for a neutral attack, it is poor overall, as opponents can usually act out before the second hit connects by shielding or using a fast attack, while the second hit may not even connect at high percentages. Depending on the opponent's weight, it is safe and a true combo at high percents, but only if the first hit connects relatively close to the arm and not at the fist. The second hit does have KO potential at very high percentages, however.
A reverse roundhouse kick. Deals more damage and knockback at her foot, while her leg deals less damage and knockback. Can be angled, which causes it to deal more damage, but may cause it to miss shorter characters on the ground if angled up. The foot sweetspot deals rather potent knockback for a tilt attack, which can KO at the edge at around 125%. At varying percentages, depending on which part of the move is landed, it can lead into a guaranteed Charge Shot, as regardless of teching, Charge Shot can catch the opponent's option in time if they are knocked down.
An axe kick resembling Captain Falcon's up tilt. It behaves unusually as it meteor smashes grounded opponents, but launches aerial opponents at a horizontal angle. This allows it to set up combos against the former at a wide range of percents, while still being a reliable edgeguard tool, due to its wide coverage and powerful enough knockback to KO aerial opponents at around 95% at the edge. At high percents, the grounded meteor can also set up KO confirms into a fully charged Charge Shot. However, the move has noticeable startup, due to coming out on frame 15, making it Dark Samus's slowest normal attack on the ground.
Kneels and quickly thrusts her Arm Cannon downward to fire a small, electric blast. It is very fast, due to coming out on frame 6, and deals respectable damage and knockback for a tilt attack, KOing at around 160% off the top blast line. It is useful as a close range anti-pressure option on opponents in front of Dark Samus, or as a punishment option. However, its very high ending lag leaves it easy to punish if shielded of missed.
A shoulder tackle with a white aura around Dark Samus. Deals more damage and knockback near the middle of the attack, KOing opponents at around 150% from the center of Final Destination, and earlier near edges. However, the early and late hits are noticeably weaker, and the move lacks combo potential.
Quickly thrusts her Arm Cannon forward to fire a small, electric blast. Functions similarly to Mario's forward smash, with the blast being the most powerful part of the move. It is one of the fastest forward smashes in the game, coming out on frame 10, while the blast has enough knockback to KO at around 100% from center stage. However, it is rather weak otherwise, with the Arm Cannon KOing at around 135%. It can be angled like her forward tilt, with the upward angle dealing more damage and knockback, though it can typically miss as a result; conversely, the downward angle can hit ledge hanging opponents, but deals slightly less damage and knockback. Compared to Samus' version of the move, it has slightly less range.
Fires five electric blasts in an overhead arcing motion. This move works best as an anti-air attack, as its multiple hits give a good amount of aerial protection. Conversely, it is unable to hit grounded opponents unless they are close enough to Dark Samus. Compared to Samus's version of the move, however, Dark Samus can catch opponents at a lower height. It is also her most damaging smash attack, dealing 18% total uncharged. However, due to its hits being spread above Dark Samus, it can fail to fully connect if the opponent is hit from too far.
A legsweep. A semi-spike with decent speed and high base knockback, allowing it to set up edgeguards and punish rolls effectively. The front hit can KO middleweights center stage around 160%.
A spinning roundhouse kick. Hits on both sides quickly and can autocancel with a short hopped fast fall. Its first hit also deals powerful knockback, which makes it a viable KOing option offstage or near the edge, as well as a decent combo finisher.
Fires five electric blasts in a slow, downward arcing motion. The first four hits drag opponents into the rest of the move using the autolink angle, with the last hit carrying the entire attack's knockback. Dark Samus' main aerial move for both combos and protection. Extremely useful as an edge get-up option or against air dodges due to its multiple hits, and using the move immediately after a short hop can hit opponents with the last hit before Dark Samus lands again.
A back kick. It is fast and deals powerful knockback when sweetspotted, which makes it an excellent KOing option, especially when edgeguarding. When sweetspotted, it is among the strongest back aerials in the game, KOing at around 110% from center stage.
A diagonal corkscrew flying kick, hitting multiple times. It is her fastest aerial, due to coming out on frame 5. Grounded opponents can be hit by the last hitbox if Dark Samus lands while starting the move in the air, although it is difficult to do so, and risky due to the move's high landing lag. It can be used as a follow-up after a dash attack, grounded up tilt, down aerial, or down throw, all of which can be followed up with another up aerial and/or can be finished off with a Screw Attack. On stages with platforms, it even has potential for a zero-to-death when using a platform to extend the combo.
Swings her Arm Cannon in a downward arcing motion. Hitting with the move's trail meteor smashes opponents, while the edges of the move at the very start and end deal decent horizontal knockback. Autocancels from a short hop, and due to its relatively low ending lag, the meteor smash is excellent for starting combos on grounded opponents, much like her up tilt.
Fires the Grapple Beam. A useful spacing option due to having only 8 frames of landing lag. It autocancels from a full hop and has impressive range, being the longest grab aerial in game. In addition to its recovery and spacing capabilities, it is good at setting up combos at close range upon landing, due to its low landing lag. Unlike in previous games, however, hitting an opponent causes the Grapple Beam to retract earlier, while not reducing the move's ending lag.
Fires the Grapple Beam. It has impressive range and is tied with Samus's grab as the longest tether grab in the game. However, it is one of the slowest grabs in terms of ending lag, making it very punishable if missed.
Twirls the opponent overhead then flings them forward. Although its knockback has been increased, it remains too weak for KOing at realistic percents, unless Dark Samus has rage and is at the edge of the stage.
Puts the opponent above herself and blasts them upward with her Arm Cannon. Dark Samus's most damaging and strongest throw, possessing enough knockback to KO middleweights under 150% from ground level and without rage. At low percents, it can also combo into an up aerial against large characters, as well as Screw Attack against most characters, though the latter will only connect its hits reliably on a few characters.
Swings the opponent high above her head, then slams them onto the ground. A reliable combo starter, with its followups including a dash attack or dashing up smash at low percents, a neutral, back or up aerial up to mid percents, and a forward aerial up to high percents.
Charges a ball of energy and fires it. Boasts excellent KO potential when fully charged, and is a useful intercepting move at a low charge. KOs at 70%-110% depending on rage and the opponent's weight and DI. Can be used to break shields if used in conjunction with her neutral attack, up or down tilts, aerials, Bomb and Super Missile. When using her forward tilt to launch the opponent into tumbling, it can set up a guaranteed combo into Charge Shot regardless of the opponent's tech option, as Charge Shot will always catch their tech direction.
Fires a Missile, which homes in on the opponent. If the special button is tapped like a smash attack, Dark Samus will instead fire a Super Missile, which stays in place for a short while before traveling in a straight line, and deals more damage and knockback. Both variations deal low knockback, but can be used to break a shield if used in conjunction with a fully charged Charge Shot. Both Missile variations can also be used as set-ups by opening up an opportunity for a grab aerial, or Charge Shot, while the Super variation sets up better for a true combo into a forward jumping Charge Shot at high percentages. The Homing variation is also useful for catching recoveries and forcing air dodges, which can open up punishment opportunities.
3% (grounded hit 1), 1% (grounded hits 2-8), 2% (grounded hit 9), 1% (aerial hits 1-12)
Leaps upward to perform a high-speed somersault while discharging energy. Shoots upward if initiated from the ground, while it gains distance slower if started in the air. A useful out of shield option, due to coming out on frame 4 on the ground, and deals good knockback that can KO around 100% while near the upper blast line.
Rolls into a Morph Ball and drops a Bomb, which explodes after a set time. Useful to force an opponent to shield and for edgeguarding, being capable of 2 frame punishes if timed correctly. It can also break shields depending on their health if used along with her up and down tilts or a fully charged Charge Shot.
Left: Raises her arm and lowers it in a fist pump pose. Based off of her birth in the secret 100% ending of Metroid Prime.
Up: Splits from a Dark Echo with an acrobatic cartwheel. They then levitate in a circle around an axis before recombining together. Dark Samus then poses with her free hand on her Arm Cannon, which is pointed upward. The pose resembles Samus' own render in Ultimate and Metroid: Other M.
Right: Turns toward the camera while glowing with Phazon, then the camera dramatically zooms in, showing two of her eyes. Similar to SA-X's introduction in Metroid Fusion, another clone of Samus.
An intense and sinister variation of the Metroid victory theme.
Dark Samus faces off against protagonist characters while she is teamed up with dark, evil, or corrupted variants of characters from their series, except for the penultimate battle, which is a free-for-all against Samus and Ridley. The pairing choices reference a time where the fighter was possessed or brainwashed into fighting the protagonist. The name is a reference to the title the Chozo gave to the Metroid Prime experiments and, by extension, Dark Samus herself.
Zelda is a CPU ally. Zelda fought against Link when she was possessed by Ganondorf and Malladus in The Legend of Zelda: Twilight Princess and The Legend of Zelda: Spirit Tracks, respectively.
Ken is a CPU ally. Ken was brainwashed by M. Bison and became Violent Ken in SNK vs. Capcom: SVC Chaos and Ultra Street Fighter II: The Final Challengers.
Ivysaur is a CPU ally. Ivysaur is the only one that was not corrupted in its game. It was likely paired with Dark Samus because it is a poison type Pokémon.
Dark Samus is absent from the World of Light opening cutscene, though she was vaporized and placed under Galeem's imprisonment alongside the rest of the playable fighters (excluding Kirby) when Galeem unleashed his beams of light.
Dark Samus was one of the many fighters that fell under Dharkon's control upon Galeem's first defeat, and is found in The Final Battle as one of the last fighters under his command. She is one of the few obligatory unlocks, and defeating her leads to a fight with Crazy Hand and the subsequent reveal of Palutena's location.
Dark Samus's fighter spirit can be obtained by completing Classic Mode. It is also available periodically for purchase in the shop for 500 coins. Unlocking Dark Samus 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 fighter spirit has an alternate version that replaces them with their artwork in Ultimate.
Dark Samus, alongside Little Mac and Isabelle, is one of the three playable characters who initially appeared as Assist Trophies in previous installments prior to becoming playable.
Out of these, she is the only one to be an Echo Fighter.
Dark Samus is the second character to be cloned from a female (in this case, Samus), with Daisy being the first.
Much like Daisy's base fighter, Peach, having had Daisy-based alternate costumes in all of her previous appearances, Dark Samus's base fighter, Samus, had a Dark Samus-based color scheme in Smash 4. This color was removed in Ultimate, likely to make it easier to distinguish Samus and Dark Samus. This scenario is similar to Ike's loss of his Chrom-inspired alternate color scheme following the character's inclusion in the roster come Ultimate. Incidentally, all of these characters are echo fighters.
Dark Samus, following Diddy Kong, is the second non-Japanese character to be playable in Smash Bros., and she is the first character in the series that was created by an American developer, Retro Studios.
Dark Samus is the second playable female villain, the first being Wendy.
Dark Samus's Final Smash resembles Samus's fully charged Phazon Beam while in the Hyper Mode of her PED Suit in Metroid Prime 3: Corruption.
Just like fellow Metroid newcomer Ridley, Super Smash Bros. Ultimate marks Dark Samus's first playable appearance.
Dark Samus also marks the first time the Metroid series has a playable Metroid.
According to Sakurai's weekly Famitsu column, Dark Samus was added due to her popularity overseas, while Chrom was added due to his popularity in Japan.
Dark Samus is the only Echo Fighter who is a villain, as the rest of the Echo Fighters are either heroes or, in Dark Pit's case, an anti-hero.
While Dark Samus normally has a different idle stance from Samus, she will assume Samus's idle stance briefly after using an animation directly borrowed from Samus (such as any attack excluding her dash attack, smash attacks, special moves, Final Smash, or flinching in any way). This is similar to other echo fighters, though unlike the other examples (save for Simon and Richter) Dark Samus does not revert to her parent character's idle stance when holding a small item.
On a similar note, despite floating to move around, Dark Samus still runs when carrying heavy items such as a crate, which is possibly an animation carryover from Samus. She additionally uses Samus animations when walking/running off a platform.
All of Dark Samus' Arm Cannon-based moves (except for down tilt, up smash and forward aerial) alter the Arm Cannon to match the color of her "visor" and armor highlights.
Dark Samus is one of two characters in Ultimate who shares another character's star KO voice clip (in her case, Samus's), the other being Dr. Mario, who has Mario's star KO voice clip.
If Dark Samus is firing a shooting item, such as a Ray Gun or Fire Flower, or wielding a Daybreak and is moving around with it, the sounds of her walking can be heard despite the fact that she floats while holding it. This is possibly due to an oversight.
Dark Samus, along with Samus, Mr. Game & Watch, and Pac-Man, are the only fighters who do not emit red-flashing eyes in the spirit battle preview screens in World of Light.
In French and German, the name tag and voice clip from the announcer on the victory screen is different from the one used on the character select screen; in the former, the announcer pronounces her name in more sinister way (akin to the English and Dutch versions), while the latter featuring a noticeable translation of "the" (die Dunkle Samus).
Dark Samus' description on the North American amiibo website is based on her Super Smash Blog entry.
As with all other Echo Fighters, Dark Samus has different taunts and victory animations.
Dark Samus's shield is slightly smaller (12.5 → 12), and she stands in a more upright stance, with the shield centered slightly higher. This makes her easier to shield poke, especially with low attacks.
However, Dark Samus's right arm is briefly intangible when activating and deactivating her shield.
Missiles follow the 
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