Tyler Labine, Tony Hale

Tyler Labine has been tapped to star in Sons of Tucson, a Fox comedy pilot about a thirtysomething guy hired by three boys to pose as their pop while the real dad is in prison. Should Reaper get picked up for a third cycle, Labine would step down from this new gig.

In other Fox pilot castings, Tony Hale — currently recurring on Chuck — will play a lawman suffering from post-traumatic stress disorder on Cop House, a comedy about a halfway house for troubled policemen.

Also, Brit beauty Natalie Dormer (The Tudors) has landed the lead on Masterwork, playing an MI-5 agent who, in tandem with an American G-man, recovers stolen artifiacts.