Years Aired: 2001-2006
Starring: Richard Steven Horvitz, Andy Berman

Those of us on the slightly weird side have a special affection for Invader Zim. The titular character was an extraterrestrial from the planet Irk whose only mission was to destroy Earth. Fortunately - or unfortunately, depending on whose side you're on - Zim could never seem to get it right. 

Nickelodeon had to pull Invader Zim during its second season after criticism from parents about the show's depictions of violence. It also failed to attract viewers and cost too much to create. However, it gained a cult following among oddball fans. In 2019, Zim returned in the television movie Invader Zim: Enter the Florpus