Mettaton is a character from the video game Undertale, created by Toby Fox. He is a robot designed for entertainment, often appearing in various television shows within the game. Mettaton has a glamorous personality and is known for his flashy performances, which include singing and dancing. His main goal is to gain fame and capture the attention of the audience. In the game, Mettaton has multiple forms, including Mettaton EX, which is a more powerful version that resembles a humanoid figure. Players encounter him during battles, where they must navigate his unique combat mechanics that emphasize showmanship and audience engagement.