Transformers: Age of Extinction's only lead role is played by an English actor.
It stars Mark Wahlberg , with Peter Cullen reprising his role as the voice of Optimus Prime , as the lead roles .	Mark Wahlberg	Mark Wahlberg	Peter Cullen	Peter Cullen	Optimus Prime	Optimus Prime
Mark Robert Michael Wahlberg -LRB- born June 5 , 1971 -RRB- is an American actor , producer , businessman , former model , and rapper .
Peter Claver Cullen -LRB- born July 28 , 1941 -RRB- is a Canadian voice actor .	Canadian	Canadians	voice actor	Voice acting
