I would like to start doing some animations and would love if someone tell me where I would go to get a 3D model of some world of Warcraft characters.

If you want to use SFM the WoW models that most people use are by Bangfri: twitter.com/Bangfri3d There's a download link in their bio that has all their free models.

Thanks for the link they will do fine, but do you know where I could get more like a bloodelf or night elf?

Bangfri has Blood/Night Elf models you can pay for, or there are these models on sfmlab:

sfmlab.com/item/527/
sfmlab.com/item/529/