Moro is the worst example. He was a threat purely on a physical level.
Superman's not applicable to Dragon Ball in the slightest, boss. Supes usually fights people as strong as he is or stronger. He will also have stories that don't involve punching other people like a monkey, all in all...
I'll give a proper response here:
If you like Dragon Ball and the elements within it, I think you should go and give Naruto a read. Naruto as a work took the elements that worked from Dragon Ball but greatly expanded and improved on them. It has an actual fleshed out setting and decent world...