Rock & Rule

Rock & Rule (known as Ring of Power outside North America) is a 1983 Canadian adult animated musical science fiction fantasy film from the animated-film company Nelvana. It was the animation studio's first feature film. Rock & Rule was produced and directed by Michael Hirsh, Patrick Loubert, and Clive A. Smith with John Halfpenny, Patrick Loubert, and Peter Sauder at the helm of its screenplay. The film also features the voices of Don Francks, Greg Salata, and Susan Roman.

Centring upon rock and roll music, Rock & Rule includes songs by Cheap Trick, Chris Stein and Debbie Harry of the pop group Blondie, Lou Reed, Iggy Pop, and Earth, Wind & Fire. The story takes place in a post-apocalyptic United States populated by mutant humanoid animals.

Background
The American distributor, MGM/UA Entertainment Company, disliked Greg Salata, who voiced Omar, and insisted that he be re-dubbed by an actor with name recognition, along with several edits being made to the film. Paul Le Mat of American Graffiti fame was cast and Omar's obscenities were written out.