- The script of the film changed the destination of the mercenary escort in the novel from Canada to China.
- The crew searched for suitable locations throughout Europe, but the progress was still affected by the warm winter weather during the shooting . It was difficult to find a snow scene that could last six to eight days of shooting .
- At first, the production company really wanted to position the film as a dark action film, but taking into account factors such as the box office market, it adjusted and rated it as PG-13.
- Director Mathieu Kassovitz had planned to invite French actor Vincent Caso as the leading actor, but gave up due to the low budget of the film.
- The actor, Vin Diesel, was two hours late every day during the filming of the film. Director Mathieu Kassovitz was extremely dissatisfied with this, and the relationship between the two was very tense .
Babylon A.D. behind the scenes gags
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Gorsky: [about his destroyed apartment] You are a hard man to find, Toorop.
Toorop: I'm not hiding. You could have knocked.
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Sister Rebeka: I am Sister Rebeka. It just want to bring three simple rules to your attention before we start our journey.
Toorop: We? I'm here to pick up one girl.
Sister Rebeka: Where ever she goes, I go. That is rule number 1. Rule number 2, the less contact she has with the outside world, the better. You're here to protect her from outside influences. That includes seeing, hearing, and feeling.
Toorop: Now it's a harsh world out there, sister.
Sister Rebeka: I know. That is why we live in here.
Toorop: Aw shit, okay, what's your third rule?
Sister Rebeka: No foul language. Do we have an agreement?
Toorop: You listen to my one and only rule - don't fuck with me. Or I'll leave you standing in the middle of nowhere with nothing but your ass to sell to get back here, your perfect world. Do *we* have an agreement?