Other actors have signed on to join Jack Black in the DreamWorks Animation comedy Kung Fu Panda, indicates Coming Soon. In addition to Black, who will voice the main character, Po, the cast now features Dustin Hoffman as Shifu, a conditioned kung fu master; Jackie Chan as Master Monkey, a model kung fu warrior; and Ian McShane (Deadwood) as the villainous Tai Lung, a bloodthirsty snow leopard. Furthermore, Lucy Liu is in discussions to voice Master Viper, another mentor of Po. Directed by John Stevenson and Mark Osborne, Kung Fu Panda will spring into theaters in May 2008.