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