King K. Rool (SSBU)/Up smash

Hitbox visualization showing King K. Rool's up smash.

Overview

A rising headbutt, followed by K. Rool falling on his belly. Up smash is incredibly strong knockback-wise while being reasonably well-protected, with intangibility and Belly Super Armor backing it up. Being frame 6, it can be used as a rather decent out of shield option to deny aerials on shield. It is also an amazing tool for ending stocks from mashing punishes out of down throw, hitting opponents during the 12 frames of popout lag through its impressive active frames. As a result, the move has a solid place in King K. Rool's kit.

However, the move has many issues. For starters, while the armor is useful, the move's damage can be used against it through counters. Vision with Buster, Tetrakarn and Gut Check can instantly break the armor should they counter the initial hit, and others will severely damage it while tending to avoid the rest of the hits. The move is also monumentally slow afterwards, with a FAF of 72. The hits after the first hit are generally quite useless outside of shield poking, with the 2nd hit's mid hit having the weakest meteor smash in the game and the 3rd hit never landing KOs. While it is effective for shield poking, there isn't much reward after either. As an out of shield option, up smash also tends to become more niche when players realize that the first hit - the one they're after - only really works on aerial opponents due to the jostling mechanics. Overall, if not used for mash punishes out of down throw, up smash tends to falter.

Hitboxes

ID	Part	Rehit rate	Damage	SD	Angle	Angle type	BK	KS	FKV	Set weight	Radius	Bone	Offset			H×	SDI×	T%	Clang	Rebound	Effect	Type	G	A	Sound	Direct	Hit bits	Hit part	Blockable	Reflectable	Absorbable	Flinchless	No GFX	Heedless
Hit 1 Early
1	1	0	15%	0		Standard	32	95	0		8.0	bust	7.5	1.0	0.0	1.2×	1.0×	0%							Kick		All	All
Hit 1 Late
1	1	0	8.0%	0		Standard	32	84	0		6.5	bust	7.5	1.0	0.0	1.2×	1.0×	0%							Kick		All	All
Hit 2 Early
0	1	0	8.0%	0		Standard	60	45	0		4.0	bust	7.0	1.0	0.0	0.5×	1.0×	0%							Kick		All	All
Hit 2 Meteor Smash
0	0	0	3.0	0		Standard	80	5	0		4.0	bust	7.0	1.0	0.0	0.0×	0.0×	0%							Kick		All	All
Hit 2 Late
0	1	0	3.0	0		Standard	30	20	0		4.0	bust	7.0	1.0	0.0	0.0×	0×	0%							Kick		All	All

ID	Part	Rehit rate	Damage	SD	Angle		BK	KS	FKV	Radius	Bone	Offset			SDIx	H×	T%	Clang	Rebound	Type	Effect	G	A	Sound	Direct	Hit bits	Blockable	Reflectable	Absorbable	Piercing	Heedless	No GFX	Flinchless	Stretch
Hit 3
0	0	0	10.0	0		Standard	70	50	0	5.0	top	0.0	5.0	0.0	1.0x	1.2x	0%							Kick		63								0.0	5.0	14.0
1	0	0	10.0	0		Standard	70	50	0	2.0	top	0.0	8.0	6.0	1.0x	1.2x	0%							Kick		63								0.0	8.0	15.0

Timing

Charges between	3-4
Belly Super Armor Frames	6-21
Head Intangibility	6-11
Hit 1 Early	6-9
Hit 1 Late	10-11
Hit 2 Early	19
Hit 2 Meteor Smash	20
Hit 2 Late	21
Hit 3 Early	22-23
Interruptible	72
Animation length	85

Hitboxes

Belly Super Armor

Intangibility

Legend (1 square = 1 frame)

Lag time

Charge interval

Hitbox

Vulnerable

Intangible

Armour

Interruptible

Trivia

• Interestingly, Hit 1's hits has an ID of 1 rather than 0, implying that there were meant to be sweetspots on the move at some point in development.

King K. Rool's moveset

Neutral attack (1 · 2 · 3) · Forward tilt · Up tilt · Down tilt · Dash attack · Forward smash · Up smash · Down smash
Neutral aerial · Forward aerial · Back aerial · Up aerial · Down aerial
Grab · Pummel · Forward throw · Back throw · Up throw · Down throw
Floor attack (front) · Floor attack (back) · Floor attack (trip) · Edge attack
Neutral special · Side special · Up special · Down special · Final Smash