Invader Zim is an American animated television series that was produced by, and subsequently aired on Nickelodeon. The series revolves around an extraterrestrial named Zim from the planet Irk and his ongoing mission to conquer and/or destroy a dark and satirical version of the Earth. His various attempts to subjugate and destroy the human race are invariably undermined by some combination of his own ineptitude, his malfunctioning robot servant GIR, and his arch-nemesis Dib, one of very few humans attentive enough to be aware of Zim's identity.
Invader Zim was first broadcast on March 30, 2001. The show was targeted at children in their early teens, and met with critical acclaim. However after the first season the show's ratings began to suffer. Before the second season was completed, Nickelodeon canceled the series, leaving at least sixteen episodes and a planned television movie series finale unfinished.