Luigi (SSBU)/Up special

Luigi Up Special Hitbox Visualizations. A closeup of the sweetspots can be found here.
Grounded	Aerial

Overview

Super Jump Punch is Luigi's most reliable kill move, able to kill around 50% to 60%. It has massive landing lag (45 frames), making it very punishable on whiff. Coming out on frame 8, it is one of Luigi's fastest out of shield options, but hindered by its low range. Super Jump Punch is used as a powerful combo finisher from a variety of Luigi's combo extenders, ending in a stock taken almost all the time. The move does not launch straight up, having an angle of 88° instead. This means that optimal DI is away from Luigi.

In the air, it is noticeably weaker, but can be hit from an up tilt, a down throw and other combos and mix ups. It also has a slightly bigger hitbox that isn't extended into the z-axis, causing some inconsistencies against thinner characters. It is also able to start a combo should Luigi grab the ledge immediately after sweetspotting it. Unlike the grounded version, the aerial version sends straight up, using an angle of 90°.

When sourspotted, Super Jump Punch deals only 1% with knockback so weak that it cannot KO above the upper blast line, allowing two Luigis to perform the Luigi ladder technique. Combined with the high landing lag, this makes the late hit incredibly unsafe to land as it will inevitably lead to a very strong punish.

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
Grounded clean hit
0	0	0	25.0%	0		Standard	50	88	0		2.2	top	1.2 to -1.2	6.0	7.0	1.0×	1.0×	0%							Bat		All	All
Aerial clean hit
0	0	0	20.0%	0		Standard	40	80	0		2.7	top	0.0	6.0	5.5	1.0×	1.0×	0%							Burn		All	All
Ŀate hit
0	0	0	1.0%	0		Standard	1	1	0		5.8	head	2.0	2.2	0.0	1.0×	1.0×	0%							Coin		All	All
1	0	0	1.0%	0		Standard	1	1	0		4.7	hip	0.0	4.8	0.0	1.0×	1.0×	0%							Coin		All	All

Timing

Grounded

Clean hit	8
Late hit	9-23
Intangible	8-10
Animation length	23

Aerial

Clean hit	6
Late hit	7-23
Intangible	6-8
Animation length	23

Legend (1 square = 1 frame)

Lag time

Hitbox

Hitbox change

Vulnerable

Intangible

Luigi'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 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
Down taunt