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Mad Dummy isn't seen very often, as Mettaton hides him. The cause for this is Mad Dummy's Impulse Control Disorder (ICD), which causes him to go on wild rampages at random intervals. Mettaton fears Mad Dummy will one day be discovered and sent to UMH like their cousin, Napstablook.

Appearance

Mad Dummy looks like his Undertale counterpart, with the exception of being slightly more torn up.

Personality

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