GIR (voiced by Rosearik Rikki Simons) is a malfunctioning and dimwitted robot SIR (Standard-issue Information Retrieval) Unit who was assigned to Zim.
GIR (voiced by Rosearik Rikki Simons) is the deuteragonist of the series. He is a malfunctioning and dimwitted robot SIR (Standard-issue Information Retrieval) Unit who was assigned to Zim.