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. Unlike his brother, he serves loyalty to not only the Irken Empire, but also the People's Democratic Union of Asia as well.