Groo was one of the first widely successful creator-owned comics, one of the few successful humorous comic books in the United States (outside Archie Comics) during its time, and one of the longest-running collaborations in comic book history.
Groo var en af ​​de første succesfulde skaber ejede tegneserier, en af ​​de få succesfulde humoristiske tegneserier i USA ( bortset fra Archie Comics), og en af ​​de længste samarbejder i tegneseriens historie.