Error!Sans is an AU destroyer. He is bent on destroying all AUs and things he considers 'glitches' or 'mistakes' in the multiverse. He uses blue strings to tie up and shatter souls. If the strings go inside a victim, he will be able to transfer his soul into the victim, controlling them to do whatever he likes, leaving the victim helpless. He can jump from one universe to another, as well as having several other glitch powers/quirks. He's easily annoyed and easily can get mad, and often rude.