rule 34 2023 alien alien humanoid ambiguous gender amputee blonde mane blue body blue fur blue horn bodily fluids brown body brown fur chunk federalchemical1728 clenched teeth colored pencil artwork disability duo ears back equid equine eyebrows feces federalchemical1728 feral fingernails fluffy pony fluffy pony species fur holding object holding toy horn human humanoid humanoid hands invader zim irken leopard spots male lore mammal mane mostly offscreen character mostly offscreen human nickelodeon pen artwork pivoted ears quadruple amputee raised tail scared scat simple background spots stump scar style emulation tail tears teeth toy traditional media artwork unicorn watermark white background wide eyed yellow body yellow fur yellow tail zim invader zim 9084953