Frisk is a child from the Surface and the main playable character of Undertale, who searches for a means to escape the Underground after falling into it. They are initially presented as a player-nameable character also known as the "fallen human". In the True Pacifist Route, it is revealed that the "fallen human" superficially resembled Frisk, but had arrived years earlier. Frisk has an androgynous appearance and is a silent protagonist, keeping their true origin ambiguous.