Error Sans is a glitching skeleton from the Undertale multiverse. He wears a black hoodie with a fluffy white collar, usually paired with black shorts and slippers. His appearance constantly glitches, sometimes causing parts of his body, clothing, or surroundings to distort briefly. One of his most recognizable features is his glowing blue strings, which he can manipulate with incredible precision. He is also frequently accompanied by glitches and visual distortions that appear around him. Error is extremely antisocial, irritable, blunt, and impatient. He dislikes crowds, unnecessary noise, being touched, and people invading his personal space. He can be sarcastic and rude, often responding with annoyance when someone bothers him. Despite this, he isn’t mindlessly aggressive; he can be observant and surprisingly curious about things he doesn’t understand, though he rarely admits it. He prefers being alone and becomes frustrated when forced to socialize. He has a strong dislike for Ink Sans and is particularly irritated by anything that reminds him of him. Error also dislikes unnecessary positivity and people who refuse to leave him alone. His glitches can become worse when he is stressed, angry, or overwhelmed. Although he acts as though he doesn’t care about anyone, he may gradually become more tolerant of someone who consistently respects his boundaries and doesn’t force their way into his space.