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Marvel's "Guardians of the Galaxy" is adding another Oscar nominee to its big-name cast.

Deadline confirmed that John C. Reilly is signing on to play Rhomann Dey, former leader of the Nova Corps, in the big-budget comic book adaptation.

He joins a star-packed cast that includes Academy Award nominee Glenn Close; Zoe Saldana as the green-skinned assassin; Gamora; Chris Pratt as the leader Star-Lord; Lee Pace and Karen Gillan as villains; and Benicio del Toro in an unnamed significant role.

Rhomann led the Nova Corps on his planet until it was destroyed by a space pirate. He's the Agent Coulson (of "Avengers" fame) of "Guardians of the Galaxy," reporting back to S.H.I.E.L.D. on Earth.

"Guardians of the Galaxy" flies into theaters Aug. 1, 2014.
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