A relatively unknown Jean-Claude Van Damme was originally cast in the 1987 film Predator as the titular Predator, but the role ended up going to Kevin Peter Hall. Why? Apparently Van Damme just wouldn’t stop kickboxing. He insisted his character be a kickboxing alien and to make this happen, he demonstrated his impressive high kicks to whomever he could find on set. Unfortunately, a kickboxing alien wasn’t really the direction the filmmakers were going and he was quickly replaced. However, two years later he would be able to kick as much as he wanted in the film Kickboxer, albeit as a human, not an alien. You can’t win them all.