How to Super-Strength

Following RAW, how would a player build a super-strong character (Thor, Thing, Parker Spider-Man, etc)? Maybe I missed it, but I did not see any "super strength" in the appendix of powers.

I wonder if I could offer my players a Super Strength power that raises their Strength by their power roll or +1 CS, whichever was lower.

I'm using the revised books.