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aged_up ahoge alien alien_humanoid antennae_(anatomy)bald black_hair boots bottomwear clothed clothing coat comic detailed_background dialogue dib_membrane digital_media_(artwork)duo english_text eyewear footwear glasses gloves hair handwear hi_res human humanoid inimoose invader_zim irken lab_coat male mammal monochrome nickelodeon not_furry open_mouth round_glasses shirt shoes speech_bubble teeth text topwear zim_(invader_zim)