Evil/Corrupted Dwarves
 

Like all the other races of Middle-earth, some Dwarves were not as 'good' in nature as the mainstream.

In 'The Hobbit' it is explicitly stated that there are 'evil Dwarves'. Also, during the war of the Last Alliance, Tolkien states that 'of the Dwarves, little fought on either side', which suggests strongly that while the Dwarves of Khazad-Dum did (as we know for a fact) fight alongside Gil-galad and Elendil, others did in fact fight for Sauron.

It's pretty conclusive, I think, that there were 'evil' Dwarves in Middle-earth.

All I'd like to know, however, is are there any writings on the Dwarves that talk and elaborate on the darker Dwarves, probably from the east and possibly corrupted by Morgoth in their early days? Does anybody know?

Well i haven't read anything that talks about the evil dwarves, as most dwarves keep to themselves and only really act if they feel its the right thing. the only thing that i can see evil dwarves doing really is just making weapons for Morgoth and what-not. and probably not big evil dwarven armies though.

Saruman, you should check out Kuruharan's recent thread (link below). It's gone into some great and interesting discussion as well as providing some writings that you could look for if you are interested in further readings.

Arcane Topic Warning: Part the Third