When does Invader Zim return?

The series centers on the titular character Zim, an extraterrestrial from the planet Irk. His mission is to conquer Earth and enslave the human race along with his malfunctioning robot servant GIR. The show originally aired on Nickelodeon from 2001 to 2002, with six of the completed second-season episodes initially going unreleased. A monthly comic book series of the same name was released on July 8, 2015, as a continuation of the television series and published by Oni Press until August 4, 2021.