Also cast so far are Michael Douglas, playing classic Marvel character Dr. Hank Pym, the inventor of the shrinking technology, and Michael Pena, in an undisclosed role.

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It is unclear who Lilly would play but it is not intended to be a one-off appearance.

Ant-Man has a release date of July 17, 2015.

Lilly broke though with her role as Kate in ABC’s Lost, where she was part of a love triangle with actors Matthew Fox and Josh Holloway. She appeared briefly in The Hurt Locker, acted opposite Hugh Jackman in Real Steel, and most recently proved that female elves are just as deadly as male ones when she portrayed Tauriel in The Hobbit: The Desolation of Smaug.

She is repped by Silver Lining Entertainment.

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