Mettaton, from Undertale, is the main entertainer from the underground. Though originally a ghost, he possessed a robot body Alphys made for him. He is confident, charismatic, charming, self-centered and egotistical at times, but cares for the impact he made with his program and for those close to him, like Alphys and Napstablook. One of the abilities of his robot body allows him to swallow others whole and, if he wishes, digest them. Unlike most monsters, he's not prejudiced towards humans.