I think heinrich is closest to the classical hero figure, martial, just and as you stated pretty badass. Julian is a dwarf so he combines also quiet a few values under his beard and belt but as in most stories the main characters are humans and the other races are more like sidekicks. Mortus and Klaus are egoistic but very realistic characters I would say.
So lets cross our fingers and hope that uncle Klaus earns us a fortune for doing what we wanted to do anyway.