The film is tailor-made for Milla Anderson Jovovich. In the creation stage of the script, Kurt Wimmer took Milla Anderson Jovovich as an imaginary object and created the character "Violet" tailor-made. Acting, can withstand the double test of acting and physical. Kurt's wishful thinking was exchanged for Mira's refreshing appearance.
In order to play a good role, Mila spent a whole year to receive training. In Mila's own words, this training was carried out completely according to the standards of preparing for the Olympics. Under the guidance of Mike Smith, Milla received the most complex and rigorous training since the film, and practiced one-word splits, backflips, and round kicks. Cameron Bright from Canada stood out from hundreds of auditioners and became the actor of the mysterious boy Sykes in the film
.
