Groo the Wanderer is a fantasy/comedy series written and drawn by Sergio Aragonés, rewritten, co-plotted and edited by Mark Evanier, lettered by Stan Sakai and colored by Tom Luth. Over the years it has been published by Pacific Comics, Eclipse Comics (one special issue), Marvel Comics (under its Epic imprint), Image Comics and Dark Horse Comics.
Groo was one of the first widely successful creator-owned comics, one of the few successful humorous comic books (outside Archie Comics) during its time, and one of the longest-running collaborations in comic book history. In 2011 IGN ranked Groo 100th in the “Top 100 comic books heroes”.
Aragonés and Evanier negotiated a deal with Epic Comics, an imprint of Marvel Comics, for that company to take care of publication while preserving creator rights. This resulted in the longest run of Groo the Wanderer with 120 issues. In 1994, with Marvel facing financial difficulties, the title switched to Image Comics and was retitled Groo. (In the first issue Groo remarks “The marvels of the world are but images before me.”)
When Image in turn faced legal problems after publishing twelve issues, the title switched to Dark Horse Comics in 1998. Dark Horse is not publishing the title as a regular series, but is periodically releasing new material and reprints as mini-series and collections.