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3_fingers ahoge alien alien_humanoid alternate_universe ambiguous_gender antennae_(anatomy)bald black_hair boots clothed clothing coat comic duo eyewear fingers footwear gloves goggles hair handwear hi_res human humanoid inimoose invader_zim irken lab_coat lying mammal monochrome nickelodeon not_furry on_front pak professor_membrane robotic_limb shoes speech_bubble topwear unconscious zim_(invader_zim)