Sans Battle Sprite (My style) by SirAnon325 on Newgrounds

sanstrongstyles

Undertale Sans Battle

Not Another Sprite Fight

Underfell Sans battle sprite. (my version xd) by flambeworm370 on DeviantArt

Undertale Battle Sprite Attempt #1 by g-norm-us on Newgrounds

Classic Sans In-Battle Sprite Coloured + BW (OLD) by SafetyBob9001 on DeviantArt

Sans Battle - Stronger Than You

Playable Sans! (LiterallyNoOne), Funkipedia Mods Wiki

Pixilart - sans 2 battle sprite by dj-mxtias

Sans and Underfell Sans Battle Sprites Revamp by JesterBones4150 on DeviantArt

Something New - Mlarko Renewed] by Mlarko on DeviantArt

Fun fact, THIS is Sans's real sprite except you'll never see it in game due to being shrunk down : r/Undertale