Trivia: Cesar Romero refused to shave his moustache for the role of Joker, so it's still visible under his makeup.
Trivia: There is no dialogue in the first 10 minutes of the film.
Trivia: Although the main character is listed in the credits as "Man", he is referred to early in the film as "Larry".
Trivia: The number of the Berlin hotel room Bruno Stachel stays in the night before he is to be awarded the Blue Max is '22', which equals the number of planes he has shot down. He needed only 20 to win the award, but he had to shoot down two more in order to make up for Willy's kills that he claimed as his own earlier in the film.