Sylvester Stallone ponders 'Rambo' prequel

Sylvester Stallone has revealed that he is considering making a prequel to his action franchise Rambo.

The 63-year-old, who has said that he doesn't plan to make a follow-up to 2008's fourth instalment, divulged in a fan Q&A on Ain't It Cool News that he may explore the early years of the mercenary with a new actor.

"I certainly think [a prequel] is worth pondering because it’s intriguing to find the whys and wherefores of how people have come to become what they are," he said.

"The traumas, the loss and the tragedy of being in Vietnam would certainly be a great challenge for a young actor and it would be ironic that Rambo directs younger Rambo after having played it for 20-plus years."

Stallone's latest action movie The Expendables opens in cinemas next month.