Believe it or not, there's still plenty of fight left in the old dog known as Sylvester Stallone, as seen by the success of "The Expendables," the actor, writer and director's 1980s action cinema throwback that secured box office gold this past weekend. With victory in mind, it's clear that Stallone and the studio executives at Lionsgate are already thinking about sequel possibilities. But really, there's only one sequel idea that makes any kind of sense: expanding on the team led by Trench, Stallone's mercenary rival played by Arnold Schwarzenegger in an all-too-brief cameo role.

It's the perfect comeback movie for Schwarzenegger, and it opens up all sorts of doors for further casting excellence. After the jump, we've got a few suggestions for who could saddle up alongside Trench as part of the "Expendables" sequel's new team!

Jean-Claude Van Damme
Notably absent from "The Expendables," Van Damme is absolutely essential if a sequel gets the green light. He would serve on Trench's team as the martial arts expert, affording him the opportunity to go toe-to-toe not just with Jet Li, but also his "Universal Soldier" co-star Dolph Lundgren.

Steven Seagal
Although he turned down the opportunity to star in "The Expendables" in a cameo role, it's never too late for the "Under Siege" actor to change his mind. Already appearing as a villain in "Machete," Seagal could turn that frown upside down by serving as the mentor to Trench's team, not unlike Mickey Rourke's work as Tool in the first "Expendables."

Carl Weathers
You can't have a Schwarzenegger-led team without his "Predator" co-star Carl Weathers at his side. Just as JCVD has personal history with Dolph Lundgren, Weathers still has to avenge Apollo Creed's murder at the hands of the icy Ivan Drago. Not only that, it's another chance to see Apollo versus Rocky Balboa on the big screen — to quote Ina Garten, how bad could that be?

Michael Biehn
Although he doesn't have the name recognition of some of the other possible "Expendables" players, Biehn had starring roles in "Terminator," "Aliens" and even "The Rock" that proved his capabilities as an action hero. Enlisting for the "Expendables" sequel could provide Biehn with an opportunity to return to his glory days as a rough, gruff reliable grunt. Plus, what "Terminator' fanperson won't be tickled by the idea of the original Kyle Reese teaming up with the T-800 that killed him.

Kurt Russell
Even if he's no longer wanted by studios for the role of Snake Plissken, there's no question that moviegoers would love to see the "Escape From New York" star back in theaters in an action hero role. Armed to the teeth with snark and attitude, Russell could provide the wild, unpredictable comic relief on Schwarzenegger's team of "Expendables."