Which of these actors did not play Julius Caesar in a major motion picture?

The actor who did not play Julius Caesar in a major motion picture was Charleton Heston. He is famous for playing the role of Mark Anthony twice. The actors Rex Harrison, Claude Rains, and Marlon Brando have each played Julius Caesar in big screen movies. In the 1962 film, "A Queen for Caesar", Gordon Scott played the title character (Caesar). In the 1963 film "Cleopatra", after the Battle of Pharsalus in 48 BC, Julius Caesar (Rex Harrison) goes to Egypt, under the pretext of being named the executor of the will of the father. Next, in "Caesar and Cleopatra", a 1945 British technicolor film directed by Gabriel Pascal, Vivien Leigh and Claude Rains played the titled characters. An aging Caesar (Rains) takes possession of the Egyptian capital city of Alexandria, and tries to resolve a feud between young Princess Cleopatra and her younger brother Ptolemy.

Charlton Heston (John Charles Carter, October 1923 – April 2008) was an American actor and political activist. As a Hollywood star, he appeared in almost 100 films over the course of 60 years. He played Moses in the epic film "The Ten Commandments" (1956), and the title role in Ben-Hur (1959), for which he won the Oscar for Best Actor. He also starred in "The Greatest Show on Earth" (1952), "Secret of the Incas" (1954), "Touch of Evil" (1958), "The Big Country" (1958), "El Cid" (1961), "The Greatest Story Ever Told" (1965), "Khartoum" (1966), "Planet of the Apes" (1968), "The Omega Man" (1971), and "Soylent Green" (1973).