Color is a skeleton that wears a blue hoodie some shorts and pink slippers except that they have rainbow flames coming from the parts of his body a rainbow Soul on his chest and a rainbow Gaster Blaster with rainbow eyes on his right arm When Sans is calm, the rainbow flames become smooth but when he feels any extreme emotions his rainbow flames grow and burn like real fire with the same rainbow color he can get angered easily he’s pretty lazy chill and makes skeleton puns