was john c reilly in guardians of the galaxy
John C. Reilly Surprises David Letterman With Unexpected âGuardians of the Galaxyâ Clip (Video) John C. Reilly plays a member of the Nova Corp in Marvelâs upcoming âGuardians of the Galaxy.â Heâs the law enforcement officer who arrests the various members of the titular team, leading to their formation. He brought a clip with him from the movie â or at least a movie â for his appearance on âLate Show.â.