ENTP - 7w8. Killer is a serial murderer, an outcome of a Sans. One day, Sans’s code was modified, turning him into an emotionless killer. He became partners in crime with Chara, and they committed atrocities over hundreds of resets. After gaining control and murdering the human, Killer was alone, until he was found by the love of his life, Nightmare. He masks his numbness through flirtations and confidence. His SOUL is constantly visible and shaped like a target, shifting based on emotions.