Sans Smash

Properties: Fairly lightweight, fairly fast land speed, but he's very floaty and slow in the air. His roll is very quick and covers a lot of distance but its short duration means it requires good timing.

A: Sans throws a slow jab out
AAA: After the jab, Sans does another, then finishes with a small hop into a dropkick.

Tilt Side A: Sans chucks a hotdog that falls to the ground. It deals light damage in the air, and enemies that step on it fall over.
Tilt Down A: Sans lies down and spins in place
Tilt Up A: Sans chucks a hotdog in a short parabola up and forwards. Like his tilt, enemies can slip on the hotdog when it lands.
Running A: Sans flips over into a lazy pose lying down, sending enemies flying. Hitting with his foot at the end of the animation knocks enemies straight downwards.

Neutral Air A: Sans flips forward and does a headbutt.
Back Air A: Sans dashes backwards a little while doing a shrug. Enemies that are hit are launched horizontally.
Forward Air A: Sans spins through the air with no vertical movement.
Up Air A: Sans chucks a hotdog a short distance up that falls to the ground.

Side Smash A: Sans makes a wave of bones appear from the ground in front of him. It travels slowly but lasts a while. Enemies that get hit take multiple hits of small damage before getting launched.
Down Smash A: Sans releases a gravity wave that traps nearby enemies and launches them straight down to bounce against the ground.
Up Smash A: Sans jumps straight upwards and creates an explosion on impact.

Grab Attack: Sans makes bones appear from the ground, hitting enemies multiple times for low damage.
Up Throw: Sans throws the enemy straight up with very low damage.
Side Throw: Sans hurls the enemy straight sideways through a wave of bones.
Down Throw: Sans smashes the target into the ground, bouncing them.

B (Gaster Blaster): Sans makes a Gaster Blaster appear behind him. For a very short duration after making it appear, he can angle it up or down with the control sticks. After a 1 second delay, it fires a beam that hits multiple times for 1% damage.
Side B (Blue Soul): Sans fires a wave forward that turns enemies blue. After a 0.5 second delay, they take damage and are thrown straight downwards. Can be evaded by putting on a shield or doing a dodge when the delay hits.
Down B (Dodge): Sans does a pose like he's doing a counterattack and starts flickering. If he gets hit at any point during this animation, or about a second afterwards, he dodges in place. No counterattack, though.
Up B (Vertical Takeoff): Sans holds a Gaster Blaster that fires straight downwards after a 1 second delay, firing him straight upwards. Creates an explosion if used on the ground.

Final Smash (Bad Time): Sans makes the lights go off. Enemies near him get trapped in an animation of getting hit by bones and flung around and getting blasted. When the cutscene ends, enemies are launched straight horizontally.