Latveria, The Negative Zone, Oa and beyond - United States
This page is devoted to lists of all supervillains, grouped by superhero who is their nemesis. I think - nay, I know - that the supervillains DO NOT get the respect they are due. I have taken it upon myself to compile enemies of superheroes. Note that in some case the superhero enemy is not actually a super-villain - but rather just a villian. My lists include superheroes-like batman, villains, names, and pictures. All the information about superheroes and their enemies is here. Enjoy.
Feel free to request any villains list you want/need in the comments section and I'll do it.