Error Sans is a character inspired by the game Undertale, but has evolved into his own unique entity. His appearance is striking, with a color scheme of black, red, and yellow. His mismatched clothing appears stitched together, reflecting his habit of stealing and altering garments. He is hot-headed, snarky, and generally antisocial. Error Sans's primary goal is to destroy AUs (alternate universes) and what he considers 'glitches' in the multiverse. He uses blue strings to manipulate souls and can travel between universes. Despite his destructive nature, he has shown fondness for certain AUs and displays some contradictory behaviors. His past is shrouded in mystery, with his origins linked to a character named Geno.