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2015 4:3 anthro anus backsack balls biceps biped bowser breath_powers butt darkened_genitalia digital_media_(artwork)elemental_manipulation fire fire_breathing fire_manipulation genital_focus genitals glitter_trap_boy hair horn koopa looking_back lying male mario_bros musclegut muscular muscular_anthro muscular_male nintendo nude on_front perineum presenting presenting_anus presenting_hindquarters puffy_anus raised_tail red_hair scalie solo tail