In 2009, Caine explained re-naming himself after Humphrey Bogart's character in "The Caine Mutiny" to New York Magazine. 

"Bogart was my hero, and even though he came from a sort of snobby, aristocratic family—he was a distant relation of Princess Diana—when I was a kid I thought he was a tough guy," said Caine. "Any person with my working-class background would be a villain or a comic cipher, usually badly played, and with a rotten accent. There weren’t a lot of guys in England for me to look up to."