When the film was released, director Mathieu Kassovitz called it a "bad episode of 24 (2001)." In an interview with amctv.com, Kassovitz said that Twentieth Century Fox interfered throughout production, and he never had a chance to shoot a scene the way it was scripted, or the way he wanted it to be.
The Cyrillic tattoo on Vin Diesel's left hand reads "SLON" ("Elephant") which stands for "Solovetsky Lager' Osobogo Naznacheniya" (Solovki Special Purpose Camp), one of the earliest GULAG's encampments (1923-1933). Later, this tattoo was popular among criminals, with a new interpretation: "Smert' Legavym Ot Nozha!" (Death for Cops From a Knife!).
The aircraft on which Toorop, Sister Rebeka and Aurora are flying to NY is a Boeing-787 "Dreamliner". This is the first appearance of this airplane in a movie. However the interior shot shows them sitting on seats most likely belonging to the cabin equipment of a Boeing-737.
According to Mathieu Kassovitz, Vin Diesel was astounded at how much the film had been shortened. Having just completed production of Fast & Furious (2009), he had not seen a cut of the film in six months. He joked, "Am I even in the movie any more, or am I on the cutting room floor?"
Mathieu Kassovitz originally intended the film to be highly ambitious. However, Twentieth Century Fox interfered with production all the way through, preventing Kassovitz from shooting scenes as he intended, sometimes even going against the script.
The trivia item below may give away important plot points.
Oakley products were used throughout the film. Vin Diesel uses an Oakley Icon Backpack 2.0 and Factory Pilot gloves, and an assortment of Snow Frame goggles in the snow bike chase are on all the actors. Although they never made it on the final cut, there is a still photo of Dieel, on the DVD case, wearing Oakley O-ROKR mp3 glasses, slightly modified, after he is fixed by the doctor, who brought him back to life.