The most amazing Invader Zim character not including Zim. Assigned to Zim in the pilot, he is a disfunctional SIR unit with brains and body made of things gotten from a garbage (litterally). He is a badass who was best friends with mini-moose and usually ended up ruining Zim's plans on accident.
GIR: "GIR reporting for duty"
ZIM: "What does the G stand for"?
GIR: "*pause* I dont know...*begins hitting himself on head*
ZIM: "For you I'm thinking, a dog"
GIR: "Can I be a mongosse dog?
GIR: I'm gonna sing the doom song now, doom doom doom doom doom domm...
ZIM: "Oh.. Why would you do that!?"
GIR: "To make for the cupcake"