- Ivan Drago. Enough said.
- What Duke said to Apollo regarding their first fight with Balboa, you can tell how scared he is for Apollo. Take away the fact that Rocky is a nice guy, he's still a fighter and a Determinator which makes it even scarier.
Duke: He's all wrong for us, baby. I saw you beat that man like I never saw no man get beat before, and the man kept coming after you. Now we don't need no man like that in our lives.