sentences:  On February 20, 2015 American publishing company, Oni Press announced that they would be releasing an official Comic Book series based on "Invader Zim", in collaboration with Jhonen Vasquez and Nickelodeon.A pre-issue 0 was released on May 23, 2015 as a zine and foreshadow to the comic book series.The first issue was released on July 8, 2015, and since then most issues are released on a monthly basis.