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mettaton (underfell)

2016 alternate_universe balls blush duo english_text fan_character gay-albino-robot girly hair heart humanoid machine male mettacest mettaton mettaton_(underfell) mettaton_au mettaton_ex mettaton_neo multi_arm multi_eye multi_limb multi_penis penis robot selfcest sex sharp_teeth simple_background smile square_crossover teeth tetraphallia text underfell underfell_mettaton undertale undertale_au undertale_fanfiction video_games white_background yaoi
2016 alternate_universe balls blush duo english_text fan_character gay-albino-robot girly hair heart humanoid machine male mettacest mettaton mettaton_(underfell) mettaton_au mettaton_ex mettaton_neo multi_arm multi_eye multi_limb multi_penis penis robot selfcest sex sharp_teeth simple_background smile square_crossover teeth tetraphallia text underfell underfell_mettaton undertale undertale_au undertale_fanfiction video_games white_background yaoi
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 smile teeth tongue underfell underfell_mettaton undertale undertale_au undertale_fanfiction video_games yaoi
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 smile teeth tongue underfell underfell_mettaton undertale undertale_au undertale_fanfiction video_games yaoi