HMMMMMMMMM. Well Thedas (the continent that DA takes place on) in general has a lot of racist attitudes towards elves. As far as CHARACTERS that hate elves, there's Solas and Sera who are both elves themselves and just have complicated views regarding the dalish (the nomadic tribes of elves, vs. city elves). But who I think you MIGHT be thinking of is Fenris, who IS an elf and just hates mages? ?? /gives you some tl;dr about DA you didn't ask for lmao :P
REGARDLESS, alas, while Fenris is a ping I don't have an account for him (yet???) BUT I STILL APPROVE OF LEGOLAS. Isabela loves elves? lmao