GIR

GIR is the insane, hyperactive robotic assistant/sidekick of Zim. He was originally scrap and then was then later constructed by The Almighty Tallest for Zim before the start of Operation Impending Doom 2 instead of giving him a regular SIR Unit due to Zim's "past." GIR is an outdated SIR Unit, therefore, he is different from the other SIR Units like MiMi.