Sly Stallone and Kirk Douglas worked together on 1991's "Oscar," so the "Expendables" mastermind is well aware that the "Spartacus" star has been a badass since even the oldest members of the franchise's cast were in diapers. From "20,000 Leagues Under the Sea" to "The Vikings" to "Paths of Glory" to "Gunfight at the OK Corral" to "The Fury," Douglas comes equipped with seven decades as one of the toughest screen personas ever to grace celluloid. The dude went toe-to-toe with Burt Lancaster seven times. That's BAD. Douglas' comeback from his 1996 stroke only makes him more badass, frankly.

-Dan Fienberg