- Professor X
The only reason the professor is not at the number one spot is most probably due to the less physical action he gets involved in.
But as for a superhero, he has so great a power that seems to be the source from which others tap from.
He is the most powerful telepath in the Universe, shouldering the responsibility of training and also protecting a thousand other powerful mutants.
- Goku
Goku can be said to be the superhero that has taken over from Superman. This superhero has worked his way to the top over the years, becoming a household name. The case in favour of Goku is that with him there is upper limit to power.