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alien black_fingernails black_nails bracelet clenched_teeth clothing collar colored_nails darkryn_(artist)dib_membrane eyewear fingernails glasses grin hand_holding hoodie human humanoid invader_zim irken jacket jewelry leather leather_clothing leather_jacket leather_topwear male male/male mammal nails nickelodeon pak piercing riikaruh smile teeth topwear zim_(invader_zim)