In Undertale, Frisk is the playable character who attempts to escape the Underground after falling down and return to the Surface. Frisk is the last of the eight humans to fall into the Underground after traveling to Mount Ebott.

Frisk is depicted as a young human child of ambiguous age, gender, and ethnicity who wears a striped light magenta-and-blue shirt, blue shorts, and plain brown shoes, and has medium length straight brown hair, short bangs, and a blank expression.

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