Sans

Orig Sans: a lazy skeleton, blue hoodie, white t-shirt underneath, black shorts with white stripes on the sides, and pink slippers.
Swap Sans: An energetic skeleton, some kind of armor, although the only armor in his outfit is his shoulder pads.
Fell Sans: looks about the same as a regular Sans, only he prefers red, and is a hundred times rougher than everyone else.
Horror Sans (you): a creepy skeleton, with a hole in his head and one red eye, but otherwise looks like a normal Sans, and all Sanses are a little afraid of him.

Swap was cooking his tacos for everyone again (and shitting all over the kitchen in the process), Sans was chilling in his room, sleeping, and Fell was playing the console, not talking to anyone at all.