Los Angeles, Sept. 22 -- It might have been decades since Sylvester Stallone first stepped in as the fearless war veteran John Rambo, but the actor always wanted to return to play the character one more time.

In a recent interview, Sylvester Stallone revealed having an idea for a 'Rambo' prequel, where he wanted to experiment with artificial intelligence to de-age his character.

"Everyone thought I was crazy. AI is sophisticated enough to go through Saigon to see him at 18 years old and basically use the same image. So it isn't as big a stretch," he said, as quoted by Variety.

Noting that the character of John Rambo won't be easy for any actor to play, Stallone added, "It's very, very hard. He may do a stellar job, but you're overcomin...