During Tom DeFalco's Editor-in-Chief career, Marvel Comics produced a seven-issue Rocko's Modern Life comic book series. Marvel published the series from June 1994 to December 1994 with monthly releases.
Nickelodeon approached Marvel, asking the company to produce comic book series for Rocko's Modern Life and Ren and Stimpy. Marvel purchased the license for Rocko from Nickelodeon. The staff created the comics, and Susan Luposniak, a Nickelodeon employee, examined the comics before they were released. Joe Murray said in a December 2, 2008 blog entry that he drew some of the pages in the comic book series.
The comics contain stories not seen in the television show. In addition, the comic book series omits some television show characters and places, while some original places and characters appear in the comics. John "Lewie" Lewandowski wrote all of the stories except for one; Joey Cavalieri wrote "Beaten by a Club", the second story of Issue #4.
On December 6, 2017, Boom! Studios began publishing a new Rocko's Modern Life comic book series.