Zir

"Damn him! Zim's evil, younger brother, Zir, is gonna kick our asses. If we prepare to kill him, maybe it would be worst than Lana vs. Lola. I don't know if both of these brothers have sibling rivalries on their own."

--Su Ji-Hoon, Zim vs. Zir

Zir is the evil brother of Zim. He hates his brother, and his new friends, Dib Membrane, Gaz Membrane, Su Ji-Hoon, and the Preschool Girls, especially everyone in the Asian Federation. He serves loyalty to not only the Irken Empire, but also the People's Democratic Union of Asia as well.