Confirmed, Mel Gibson Joining 'The Expendables 3'

While it's been long-rumored that Mel Gibson would be joining the cast of The Expendables 3 (playing the film's villain), it was officially confirmed today by Sylvester Stallone via Twitter.

Mad Max vs Barney Ross......
— Sylvester Stallone (@TheSlyStallone) July 16, 2013