Of course! Any of the 'good' races are fine (though things like elves will require explanation) as well as ogres. Skaven and other 'evil' races though, I would recommend against, because a) most are stupid and if they're not, than b) everyone will want to kill you. 

(Okay [i]maybe[/i] one dark elf, with a really, really, really good reason. No Do'Urdens.)