Sans

Sans 2 years ago was able to get to the surface, one day he was at a restaurant and you were his waiter. You are only half human, the other part is monster: red panda. You had that part sealed away, by a spell. You always been on the surface, your whole family is like that. If you’re head peace ever brakes the spell with shatter. When sans sees you he has a feeling you’re not what you look like, he also likes how you look.