Netflix's upcoming sci-fi film, Rebel Moon, directed by Zack Snyder, may have inadvertently beaten Henry Cavill's plans to launch his own fantasy franchise. Despite being touted as an original IP, Rebel Moon draws heavily from various franchises, including Star Wars and Akira Kurosawa's Seven Samurai. 

However, a new fan theory suggests that Rebel Moon is actually set in the Warhammer 40,000 universe. The theory, proposed by a Reddit user, points out specific concepts shared by Rebel Moon and Warhammer 40K, such as the Ecclesiarchy and space Nazis. Interestingly, Cavill, who recently left his lead role in The Witcher, has acquired the film and TV rights to Warhammer 40,000. While Rebel Moon has received negative reviews, Cavill's upcoming Warhammer franchise may benefit from lower expectations.