Reflex
While they may not be quick thinkers, they are quick on their feet. Those who have pretty good reflexes could dodge a blade before they even know what they're dodging from. Their body works quicker than their mind, pushing them to move without any conscious thought. It's what makes them great fighters and warriors. As they are placed on the frontlines, they know exactly what to do without having to be told what to do.
Be warned, when faced against them, keep your stance steady. Otherwise, they might knock you out before you even know what's happening.
Class
See Also