I'm sure the taunts are just false bravado, and everyone breathes a sigh of relief when their duel challenge goes unanswered. I admit I'm guilty of throwing out some challenges early on (To wound, not to death- not that stupid), but I'm still sort of a noob and assumed the leader-types were mostly humanoid, since "his" sons seem to be normal humans. Done a little more research since then and realized it looks kinda stupid, so I apologize.