11. Ivan Drago (Rocky IV)
Starting at the lower end of the brick spectrum, Rocky Balboa's most fearsome opponent - Ivan Drago - certainly wasn't super-powered in any way, but by real world standards he was certainly insanely strong and durable. He was essentially a meta-human who, thanks to training and steroids, was punching with 1200 lbs of force per square inch - which is absolutely insane in terms of power. Also, at least at first, in his fight with Rocky he was showing incredible durability to allow the Italian Stallion to take free shots at his body without even flinching. His punches gave Rocky brain-damage and killed Apollo Creed and, given that he didn't care if his opponents lived or died ("if he dies, he dies"), you really don't want to find yourself on his hit-list.