Setting: Rollion plains, mountains...I'm not sure if it matters.
Terms searched: Every form of enemy, enemies, dragon, dragons, myths, legends, mythology, folklore, beliefs, and of that I can think of.
Places searched: Google, Yahoo, Wikipedia, BananaSlug (which was not helpful in the least), and Ask!
Are there any specific mythological races (i.e. elves, dwarves) that have a strong hatred of dragons? My friend asked me to create a nemesis for him with her own army of dragon-hating...blank. He left that part up to me. -_-
Help? That's really all that I need.
EDIT: Thanks for all of the suggestions! That actually helps me out a lot...^_^