The Player or PLAYER is the protagonist of the Underplayer AU, who claims to be from the real world, where Undertale is nothing more than a game. The Player's main purpose is the achieve the "perfect ending" of everyone in Undertale by travelling through other timelines and AUs (Known as Worldlines and Fun Values). It's also revealed that The Player isn't one of their kind and in truth, there are others who are just like them, however unlike other players, they are belevolent and willing to help