Ted Kotcheff, a shape-shifting Canadian director whose films introduced audiences to characters including the troubled Vietnam War hero John Rambo, a dead body named Bernie and the young hustler Duddy Kravitz, died on April 10 in Nuevo Vallarta, Mexico, where he had lived for more than a decade. He was 94.

His death, in a hospital, was confirmed by his son Thomas Kotcheff.

“My filmography is a gumbo,” Mr. Kotcheff wrote in his memoir, “Director’s Cut: My Life in Film” (2017, with Josh Young). “Not being pigeonholed as the guy who makes one style of film has allowed me to traverse every genre.”

Mr. Kotcheff was directing television dramas in Britain when he met the novelist Mordecai Richler, a fellow Canadian, in the 1950s. They became friends and ended up sharing an apartment in London, where Mr. Richler wrote “The Apprenticeship of Duddy Kravitz” (1959), a novel about an amoral Jewish wheeler-dealer in Montreal who will do whatever he can to rise from poverty to wealth. Mr. Kotcheff vowed to Mr. Richler that one day he would direct a movie version of it.

And he did. The film, starring Richard Dreyfuss, was made 15 years later.

Vincent Canby, reviewing “Duddy Kravitz” for The New York Times, praised its “abundance of visual and narrative detail,” which he speculated grew out of the “close collaboration between Mr. Richler and Mr. Kotcheff.”