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alternate universe, ambiguous gender, anon, artist request, blush, clothed, clothing, duo, girly, humanoid, long hair, machine, male, male only, mammal, mettaton, mettaton (underfell), mettaton au, mettaton neo, monster, multi eye, open mouth, penis, robot, robotic penis, sharp teeth, simple background, sketch, smile, teeth, tongue, underfell, undertale, undertale (series), undertale au, undertale fanfiction, video games, yaoi

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Characters

anon mettaton mettaton (underfell)mettaton au mettaton neo

Copyrights

underfell undertale undertale (series)undertale au undertale fanfiction

Metadata

alternate universe simple background sketch video games

Tags

ambiguous gender blush clothed clothing duo girly humanoid long hair machine male male only mammal monster multi eye open mouth penis robot robotic penis sharp teeth smile teeth tongue yaoi