9. Mike Tyson
You cannot have a list like this without the Baddest Man on the Planet. Although he is a playable character in the game, the option of using him as his 'Special Enforcer' role would be a great addition. Obviously, Tyson's contribution to WWE is legendary. Heralding in the Attitude Era, Austin and HBK were involved in a feud that would elevate Austin to his untouchable reputation he has now. After Stone Cold flipped off Tyson, he was aligned to DX and put into the role as Special Enforcer for the main event match. Everyone knows what happened thereafter, and Tyson alone propelled the WWE into stratospheric popularity. After counting three, turning face by joining Austin and knocking HBK out, Tyson was solidified as a non-wrestling legend, and is now a Hall of Famer. Having him in this role would be cool as he could come in an count if the referee gets knocked out during a match, or be involved in helping out a competitor if he gets abused. Plus, it's Mike Tyson, what other reason do you need?