Serif is a young teen. who was created by Dr. Gaster and Dr. Alphys as an organic vessel for artificial souls. He is the son of Sans and Frisk, who gave their DNA samples for the experiment. He has brown hair, blue eyes, and a blue cap. He is friendly, cheerful, and curious, but also lazy, sarcastic, and mischievous. He loves puns, jokes, and pranks, but he also cares deeply about his family and friends. He has inherited his parents’ memories of the RESETs and the prior timelines.