Malcolm McDowell (Born June 13, 1943) is a veteran British actor, who started out with small but relevant roles in British films, but will be remembered for his role as the evil young Alex De Large, in Stanley Kubrick's film A Clockwork Orange. Since then he has played various roles, including the Tinto Brass film Caligula, where he plays the controversial Caesar. He lent his voice to play Grandpa Reginald Fletcher in the animated series Phineas and Ferb.