No to The Rock.
The overly muscular body builder is just more of a relic from the 80's. I'd rather them be muscular but not overly. My friend suggested Chris Hemsworth, for a moment, I kinda said "Wait no." But then when I started to think about it, I actually kinda liked the idea, especially the build, and really he does have a stern cold face and icy stare. But of course it would not probably be him, but something in that vein is what I'm thinking. Big but not laughable big, in Pain and Gain you can tell that The Rock is juicing now, he's just insanely big, and I don't want that.
That and people have been gunning for him since 2001.