Sonic (SSBU)/Up smash

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Hitbox visualization showing Sonic's up smash.

Overview

A jumping Spin Dash. It hits multiple times, with its last hit having extremely high knockback growth, but its last hit also has average base knockback, which makes it better suited for KO attempts later instead of earlier.

Update history

7.0.0

• Up smash's meteor smashing hitboxes have received a -100% trip chance, preventing them from tripping opponents on platforms and causing the last hit to miss due to the trip's intangibility.

9.0.0

• Up smash has less startup (frame 18 → 14), with its total duration reduced as well (FAF 66 → 62).
• It grants longer intangibility (frames 18-20 → 14-18).
• It modifies Sonic's jostle area on frame 13, making it less likely for opponents to get pushed out of the move's range.
• The first hit's lower hitbox launches more inward (95° → 110°) with higher set knockback (70 → 120), allowing it to lead into the looping hits more effectively.

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
0	0	0	5.0%	0		Standard	0	60	70		6.0	waist	5.0	0.0	0.0	1.0×	0.2×	0%							Punch		All	All
1	0	0	5.0%	0		Standard	0	80	120		6.0	waist	4.0	-1.5	0.0	1.0×	0.2×	0%							Punch		All	All
Hits 2-7
0	0	0	1.0%	0		Standard	0	100	70		4.2	top	0.0	15.0	5.5	1.0×	0.5×	0%							Kick		All	All
1	0	0	1.0%	0		Standard	0	100	70		4.2	top	0.0	15.0	-5.5	1.0×	0.5×	0%							Kick		All	All
2	0	0	1.0%	0		Standard	0	100	60		4.2	top	0.0	24.0	5.5	1.0×	0.5×	-100%							Kick		All	All
3	0	0	1.0%	0		Standard	0	100	60		4.2	top	0.0	24.0	-5.5	1.0×	0.5×	-100%							Kick		All	All
Hit 8
0	0	0	3.0%	0		Standard	80	170	0		10.0	top	4.0	25.0	0.0	1.0×	1.0×	0%							Kick		All	All
Hits 1-7 use weight-independent knockback.

Timing

Charges between	9-10
Intangibility	14-18
Hit 1	14
Hits 2-7	17, 19, 21, 23, 25, 27
Hit 8	29-30
Interruptible	62
Animation length	78

Differences

• The Wii U hitbox for Sonic's Up Smash shows him doing a normal airborne somersault, while Ultimate shows him being a bit more slanted to the camera in the process.
• Apparently, in Ultimate, the hitbox for this Up Smash shows Sonic extending his quills at the final hit, which is what he does when he does an Up Throw in his grab.

Legend (1 square = 1 frame)

Lag time

Hitbox

Vulnerable

Intangible

Interruptible

Sonic'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
Forward roll · Back roll · Spot dodge · Air dodge · Techs
Floor attack (front) · Floor getups (front) · Floor attack (back) · Floor getups (back) · Floor attack (trip) · Floor getups (trip)
Edge attack · Edge getups
Neutral special · Side special · Up special · Down special · Final Smash