He's set to star opposite Adrienne Palicki, who nabbed the role of Wonder Woman/Diana Themyscira, aka Diana Prince. Elwes will play Themyscira Industries acting CEO Henry Detmer. He's devoted to Diana and looks out for her interests like an uncle would, but it's possible he could become a love interest later. The news was first reported by Deadline.
Elizabeth Hurley recently tweeted that she'll play an "evil villain" in the project.