Trivia

After Leonard Nimoy's Spock, his Star Trek (1966) and Star Trek: Deep Space Nine (1993) character, Kor, is the second longest running character to have been played by one actor in the Star Trek franchise. He made his first appearance as Kor in Errand of Mercy (1967) on March 23, 1967 and made his final appearance in the role in Once More Unto the Breach (1998) on November 11, 1998, more than 31 years later.

Colicos worked with Gene Roddenberry designing the look the Klingons have on Star Trek (1966). Budget constraints prevented the extensive makeup the Klingons were supposed to have so Colicos suggested they have a leathery Genghis Khan look, dark skin and hair.

Played the first Klingon commander ever seen, on Star Trek (1966).

In addition to his appearances as Kor on Star Trek (1966), he essayed another popular science fiction television character, the evil Count Baltar in the original incarnation of Battlestar Galactica (1978).

Pictured as the character Commander Kor on one of a set of five Canadian commemorative postage stamps celebrating the 50th anniversary of the television series Star Trek (1966), issued May 5, 2016. Price on day of issue was 85¢. Other stamps in the set honored William Shatner, Leonard Nimoy, James Doohan and DeForest Kelley.

Among his closest friends was Lorne Greene, with whom he performed in a 1952 Canadian radio performance of Joseph Conrad's novel "Heart of Darkness".

Kept a theatrical research library of some 4000 volumes at his home in Toronto, Ontario.

Extensive Shakespearean credits throughout the late 1950s and 1960s included Lysander in "A Midsummer Night's Dream", Petruchio in "The Taming of the Shrew", Leonato in "Much Ado About Nothing", Laertes in "Hamlet", and the title roles in "King Lear" and "Macbeth".

Was acclaimed for his leading role in the 1964 production of "King Lear" at Canada's Stratford Festival.

Outside of his classical roles, his most famous stage role was as Winston Churchill in Rolf Hochhuth's extremely controversial play, "Soldiers". He played the role both on Broadway and in London's West End.

Began his acting career in 1946 performing on stage in Canada and acted in hundreds of plays on three continents prior to acting in films and television series.

Was also a passionate horseback rider.

Father of actor Nicholas Colicos, father-in-law of Sophie-Louise Dann.