Claim: Transformers: Age of Extinction stars an American rapper as one of the lead roles.
Evidence: It stars Mark Wahlberg , with Peter Cullen reprising his role as the voice of Optimus Prime , as the lead roles.
Mark Robert Michael Wahlberg -LRB- born June 5 , 1971 -RRB- is an American actor , producer , businessman , former model , and rapper.