Hun was born in 1940 to a Circassian father and a Turkish mother.
After studying at the St. George's Austrian High School in Istanbul, he graduated in Biology and Environmental Science from the University of Trondheim in Norway. After he had participated in a contest organized by Ses (The Voice) magazine he was noticed by producers. He made his debut in 1963 with "Genç Kızlar" (Young Girls) opposite Hülya Koçyiğit. He went on to become a household name, sometimes acting in more than 10 films in a year.
On March 3, 1973, he married socialite Berna Hanım after a highly publicized affair. The couple has two children, a daughter, Bengü (born 1974) and a son, Burak (born 1981). From 1985 onwards, he became a lecturer at Marmara University. He decided to try his hand at politics and became a member of parliament for the Anavatan Partisi (Motherland Party), between the years 1999 and 2002.