Alexa Davalos

Mads Mikkelsen, Gemma Arterton, Alexa Davalos join pic

Warner Bros. and Legendary are beginning to line up their titans.

Mads Mikkelsen, Gemma Arterton and Alexa Davalos are boarding "Clash of the Titans," the Greek-god epic being directed by Louis Leterrier.

Sam Worthington is toplining as Perseus, who is put on a quest to save a princess and defeat Hades, the god of hell. Matt Manfredi and Phil Hay wrote the script.

Mikkelsen is playing Draco, a skilled fighter and leader of the Praetorian Guard that accompanies Perseus.

Davalos is Andromeda, the captured princess, and Arterton is Io, who is instrumental in bringing the winged horse Pegasus to Perseus.

Legendary is co-producing and co-financing the pic, which is set to begin lensing in the U.K. at the end of April. Thunder Road’s Basil Iwanyk is producing with Kevin de la Noy. Jon Jashni and Thomas Tull are executive producing.

Lynn Harris and Matt Milam are overseeing for Warners.

Mikkelsen, one of Denmark’s most recognizable faces, is best known to American audiences for his role of the villain in "Casino Royale." Repped by UTA and Danish agent Ulrich Moller-Jorgensen, the actor stars in Eurowide Film’s "Coco Chanel & Igor Stravinsky."

Arterton, who appeared in the James Bond film "Quantum of Solace," next appears in Richard Curtis’ "The Boat That Rocked" and opposite Jake Gyllenhaal in Disney’s "Prince of Persia: The Sands of Time." She is repped by UK’s Independent Talent Group.

ICM-repped Davalos was most recently seen in "Defiance." Other credits include "The Mist," "Feast of Love" and "The Chronicles of Riddick."