Groo the Wanderer is a fantasy/comedy comic book series written and drawn by Sergio Aragonés, rewritten, coplotted 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".
Groo (the epithet "the Wanderer" is informal and rarely mentioned within the stories) first appeared as a parody of the brutal sword & sorcery heroes who were popular at the time of his creation in the 1970s, especially Conan the Barbarian as presented in Marvel Comics. Groo is an ugly large-nosed buffoon of unsurpassed stupidity who constantly misunderstands his surroundings. Possessed of superlative skills in swordsmanship (the only task at which he's remotely competent) he delights in combat but otherwise is a peaceable and remarkably honest fellow who tries to make his way through life as a mercenary or by working odd jobs. Unfortunately he is also indiscriminate in the use of his battle skills (prone to joyously leaping into any fray before attempting to ascertain the reasons for the fight, or even who is on what side) and incredibly accident-prone, and despite generally good intentions causes mass destruction wherever he goes. Most of his adventures end with him oblivious to the mayhem he has wrought, or fleeing an angry mob. As a result, his penchant for destruction has become so widely known and feared that just the news of Groo approaching is sometimes enough to cause chaos when the population reacts to the impending disaster. Groo occasionally meets with respect and good fortune, but it does not last. Businesses, towns, civilizations and cultures have all been unwittingly destroyed by Groo. Such is Groo's incompetence that so much as stepping onto a ship (except in Rufferto's company) will cause it to sink. In issue 100 of the Groo series, volume 2, Groo learned how to read.