Alien Species

The SIR (Standard-issue Information Retrieval) Units are a type of robots created by the Irken people to function as servants.


They have flat heads, squat bodies and what appear to be headlights for eyes.

Notable Members[]

  • GIR: An infamously stupid SIR Unit who was paired with Zim, when his higher ups sent him to Earth (specifically an exile under the guise of a mission, due to his incompetence).