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alien alien_humanoid antennae_(anatomy)backpack black_hair bodily_fluids clothing comic dib_membrane duo english_text exclamation_point eyewear glasses gloves green_body green_skin hair handwear human humanoid humor invader_zim irken mammal nickelodeon open_mouth question_mark red_eyes rinsfw scared shocked smile speech_bubble sweat sweatdrop text zim_(invader_zim)