Mettaton is the secondary antagonist of the indie game Undertale. He is a ghost possessing a robot body created by Alphys, built to be a TV entertainer. Alphys later added human combat features to his body, but supposedly tried to remove them. When Frisk arrived, Alphys came up with a plan to make herself look good to Frisk, activating puzzles and traps and getting Mettaton to antagonize Frisk so that Alphys can "rescue" them from him. During the Neutral run of the game, the scientist Alphys will tell Frisk that she has created a robot known as Mettaton with anti-human killing functions, but wanted to remove them when she saw Frisk coming by camera.