Mark Dacascos does all his own stunts in the film.
Julie Condra's voice-over has been dubbed by Deborah Kara Unger to giver her a deeper feminine voice with a more erotic dimension (said director Christophe Gans in his audio commentary). Tchéky Karyo's voice has been dubbed by Ron Perlman, probably likely because he was not supposed to play a French detective so his accent would have been too heavy.
Was not legally available for purchase in the United States until 2017 when it was uploaded to the Amazon Prime Streaming Service.
Jason Scott Lee was originally wanted for the role but he had a three-picture obligation for Universal Pictures and could not commit to the project. Mark Dacascos lobbied for the part and eventually went on to became Christophe Gan's actor of choice for future and upcoming films.