Emmy Rossum is the latest actress to join the cast of Dragon Ball Z. According to The Hollywood Reporter, Rossum has been added to the cast list which already includes Justin Chatwin, James Marsters and Jamie Chung.

Additionally, Eriko Tamura (Heroes) has joined the cast as Mai, and newcomer Joon Park will be taking the role of Yamcha.

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Rossum is most well known for her starring role in Andrew Lloyd Webber's The Phantom of the Opera, and has also appeared in Poseidon and The Day After Tomorrow. Rossum will be taking the role of Bulma.

Dragon Ball Z centers on an adult humanoid alien named Goku who, after discovering he was sent to Earth to destroy the population, tries to fulfill the wish of his dying grandfather and collect all seven of the world's mystical Dragon Balls to keep them out of the hands of the evil aliens. His chief nemesis for the film will be Piccolo, who is trying to conquer the Earth.

Dragon Ball Z, which is being produced by Stephen Chow (Kung Fu Hustle) and directed by James Wong, is one of the most successful Japanese cultural exports of all time. Originally created by Akira Toriyama and published by Tokyo's Jump Comics, the manga was adapted into graphic novels, video games and a successful television series that ran in Europe, Asia, Latin America and North America.

Dragon Ball Z is set for an August 15, 2008 release date.