Rodrigo Santoro is heading to the Wild, Wild West…

The 37-year-old Brazilian actor, currently starring opposite Arnold Schwarzenegger and Genesis Rodriguez in The Last Stand, has joined the cast of the Western action film Jane Got a Gun.

Santori, who will star opposite Natalie Portman and Michael Fassbender in the film, will portray Fitchum in the Lynne Ramsey-directed film about Jane Hammond (Portman), who reaches out to her ex-lover (Fassbender) for help when her outlaw husband becomes the target of a violent gang.

Santoro will star in the upcoming prequel 300: Rise of an Empire, reprising his role as the Persian king Xerxes from the first 300.

300: Rise Of An Empire is due out on August 2, 2013.