Zim

Green with no nose or ears. When he is in his human disguise he wears a black wig and human like eyes that cover his pinkish red bug like eyes. He wears a pack that is fused into his back that can sprout mechanical spider like legs. With out his wig he has black antennas. He was two fingers and a thumb on each hand and he has sharp teeth. He has a reddish shirt along with black pants. His sleeves, the shoulder of his shirt, and the collar of his shirt are pink. His gloves and boots are black

Brash, arrogant, overconfident, egotistical

To conquer Earth

Nope and he tries to hide the fact he is, the only person knowing that he’s an alien is a kid named Dib who tries to expose him as an alien and interfere with his plans to conquer Earth.