Remember the Jotuns. They are evil per definition as enemies of the vanir (who in turn have no qualms on enslaving humans and other lesser beings).
I did not have the intention to do 'evil' or 'good' nations, but it might be fun to speculate in how evil a nation actually is. I have an easier time to see an 'evil' nation, since evil is in the eye of the beholder. Behold Mictlan and see what teh europeens saw in Mexico, and said it was evil. Any nation with connections to supernatural forces unfriendly to humans might be considered evil from a human perspective. The eye of the beholder works less well on 'good' nations. The 'great satan' of the rethoric of the late Ayatollah Khomeini considers itself to be the 'good' nation and 'defender of the free', even though many would argue the point. Swedes might consider sweden a nation of good sionce we have the secon highest tax pressure in the world and therefore have a good social security net (or whatever it is called). But Saudiarabia have income taxes at 2.5 % (not in the 50'es of sweden) and has is even lower hospital treatment costs than sweden. They cut the the hands of thieves, which might be percieved as cruel.
Hmm, I lost focus
Since most nations are humans I think the nations directly hostile to humanity qualify as evil. Abysia, Mictlan, LA Ermor, Niefelheim, Lanka, Fomoria, Yomi, Shinuyama.
Vanheim, Helheim, Bandar Log, C'tis might be considered evil in the sense that they care little for humans, but C'tis at least have had friendly contacts with Ermor in earlier ages and is probably considered ancient instead of evil.
Pangaea is definitely evil as a force opposed to civilization. At least in the earlier ages. That assumption might make EA Ulm evil as well, since they are opposed to the ermorian civilization, hope of humanity.
Hmm, is it the culture of the nations we are speaking, or their leader or their God? Culturally LA Ulm might be nice, but their leaders possibly evil.
Interesting poll though