From The Grindhouse Cinema Database
- Some of the shadow-warrior footage was taken from Zulu (1964), El Cid (1961), Patton (1970), Battle of the Bulge (1965), and especially Aleksandr Nevskiy (1938).
- The original title, "War Wizards," was changed to avoid confusion with another 20th Century Fox release, Star Wars (1977).
- 44 minutes into the film, when Weehawk falls into a chasm but urges Avatar to go on, Avatar appears to mutter a spell: "Morrow crinkle frizetta." This is a reference to fantasy illustrators Gray Morrow, Frank Frazetta and Frank's best friend, Roy Krekel.
- The line "They killed Fritz! They killed Fritz!" is a reference to Robert Crumb killing off Fritz the Cat in his underground comic book series. Ralph Bakshi directed the film adaptation of Fritz the Cat (1972). Bakshi is quoted as saying, "I named the character Fritz in "Wizards," just so I could scream 'They killed Fritz!' To kill such a cat would make Don Marcus commit suicide."
- No pencil tests were done on the film because of its low budget. The drawings went straight to the final product.
- The horse-like animals had two feet instead of four because it was easier and cheaper to animate.