7. Arnold Schwarzenegger

You may say he’s old, but he still has the appearance of a massive man and with some make up he could be perfect for the role. He has the hair, the stature and the muscles. And let’s not forget his recent experience in Terminator: Genisys where he wears the make-up similar to what’s required for Cable.

He has gray hair, a massive body, he knows how to handle a special prosthetic to change his appearance, and he’s familiar with portraying a mercenary and characters such as Cable. After all where can you find an actor with a 50 inch back? However, this choice may seem weird, but if the guy is fit he could do one last great movie.