- Cast the Expert: Roger Corman actually used several members of the real Hell's Angels as extras.
- Cast the Runner-Up: George Chakiris and Peter Fonda were originally cast as Heavenly Blues and Loser, respectively. However, Chakiris could not ride a motorcycle, so he was replaced by Fonda, and Bruce Dern took Fonda's original role as Loser.
- Inspiration for the Work: Roger Corman became interested in making a film about the Hells Angels after seeing a photo in the January 1966 of Life magazine for a biker funeral.
- Real-Life Relative: Loser and his wife Gaysh are played by then husband and wife in real life Bruce Dern and Diane Ladd.
- Uncredited Role: Peter Bogdanovich did uncredited rewrites to the screenplay.
- What Could Have Been: Charles B. Griffith's first draft of the screenplay was a near-silent movie which contrasted the bikers with the story of a police motorcycle cop. Corman did not like it and ordered rewrites, eventually giving it to Peter Bogdanovich to rewrite. Bogdanovich later estimated that he rewrote 80% of the script.
Trivia / The Wild Angels