Also joining the cast of the Matt Nix drama are Emma Dumont and Percy Hynes White.

Fox's Marvel drama has cast its leading lady, and diehard fanboys are going to love it.

Amy Acker, a Person of Interest and Angel alum, has nabbed the female lead in the untitled Marvel drama from Matt Nix, The Hollywood Reporter has learned. Also joining the cast are Bunheads grad Emma Dumont and Percy Hynes White (Between).

The action-adventure project focuses on two ordinary parents who discover their children possess mutant powers. Forced to go on the run from a hostile government, the family joins up with an underground network of mutants and must fight to survive.

Acker will star as Kate Stewart, a woman who is struggling with her separation from her husband, Reed (True Blood's Stephen Moyer), and her increasingly challenging teenage children. When her family situation takes a dark turn, she finds that she's stronger than she thinks.

For Acker, the casting brings her back to Fox and producers 20th Century Fox Television following her two-season run on Joss Whedon's Dollhouse. Her credits include Whedon's Angel and Much Ado About Nothing. She is fresh off her multiple-season run on CBS' Person of Interest, which wrapped its run in June, and counts CBS' MacGyver and Alias among her credits. Acker is repped by APA, Anonymous Content and Sloane Offer.

Dumont, meanwhile, will take on the role of Lorna Dane/Polaris, a strong-willed, brave and loyal mutant who has the ability to manipulate magnetism. Her credits also include Aquarius and Pretty Little Liars. She is with APA, Untitled and Bloom Hergott.

White will portray Andy, a sensitive kid and bit of a loner, who keeps to himself to avoid the turmoil he faces at school and at home. His credits include Between, 11.22.63 and Night at the Museum. He is with Innovative Artists and OAZ.

Burn Notice grad Nix wrote the pilot, which X-Men franchise veteran Bryan Singer will direct. The duo executive produce alongside Lauren Shuler Donner, Simon Kinberg, Jeph Loeb and Jim Chory. 20th Century Fox Television will produce in association with Marvel Television.

The cast also includes Natalie Alyn Lind, Blair Redford, Jamie Chung and Sean Teale.

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