John C Reilly has reportedly signed up to star in Guardians Of The Galaxy.
The Step Brothers star will play Rhomann Dey, an intergalactic soldier who gives powers to human Richard Rider, according to Deadline.
As Rhomann Dey, John will be leader of the Nova Corps on planet Xandar, whose home and family were destroyed by space pirate Zorr.
Rhomann becomes mortally wounded by Zorr and chooses a human, Richard, to inherit his powers and defeat the evil pirate.
Guardians Of The Galaxy is due to be released in summer 2014.
John can be seen later this year in comedy sequel Anchorman: The Legend Continues.