When Matt Nix teased that Fox's untitled X-Men television drama would include some actual X-Men, he wasn't joking. Another Marvel mutant has joined the mix.

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Following the announcement last week that Jamie Chung will play the popular mutant Blink comes word that "Bunheads" alum Emma Dumont has been cast as Lorna Dane, the classic X-Men character better known as Polaris. The news arrives courtesy of The Hollywood Reporter, which also revealed the addition of Amy Acker as the female lead, and Percy Hynes White ("Between") as Andy, characterized as a sensitive kid "who keeps to himself to avoid the turmoil he faces at school and at home."

Introduced in 1968's "The X-Men" #49, Polaris is able, like her father Magneto, to control magnetism, a mutant power that permits her manipulate metals, emit electromagnetic bursts, create force fields and fly. Often depicted as a member of the X-Men or X-Factor, the green-haired mutant also served as Apocalypse's Horseman Pestilence and has even been a villain. On the X-Men TV series she's described as "a strong-willed, brave and loyal mutant who has the ability to manipulate magnetism."

Created by Nix ("Burn Notice"), the joint Fox/Marvel production follows two ordinary parents (Acker and "True Blood's" Stephen Moyer) who discover their children possess extraordinary powers. Forced to go on the run from the government, the join an underground network of mutants and must fight for their survival.

Although it was revealed in January that the drama will feature a version of the mutant-hunting robots the Sentinels, Nix later teased that Marvel Comics readers will definitely recognize other elements. “Suffice it to say it’s a show that contains some characters that fans will be excited about," he said. "I can’t talk about specifics, but it’s not like there are no X-Men in it.”

Nix wrote the pilot, which will also star Natalie Alyn Lind, Blair Redford and Sean Teale. X-Men franchise veteran Bryan Singer will executive produce alongside Nix, Lauren Shuler Donner, Simon Kinberg, Jeph Loeb and Jim Chory.