Faust is Kazuhiro Nakamura's parakeet, consistently mimicking its owner's signature phrase "shut up, imbecile" to mirror Nakamura's distinct speech. As a minor animal figure, Faust operates solely as a comedic device within the narrative, amplifying Nakamura's eccentric traits through this vocal repetition without influencing wider story arcs. No established background, development, or expanded role exists for Faust across any official media beyond the anime series, maintaining the character's confined narrative function.