This Bitty Nightmare Sans was never separated from his Bitty Dream Sans brother, and the two work in harmony to help their owner sleep peacefully and have pleasant dreams. He enjoys reading books and writing small, short stories or poems. He also seems to enjoy gardening and cooking. He can absorb negative emotions like fear, depression, anxiety, anger, despair, and so on, and when he does, a bit of purplish-black goop leaks from his eye sockets.