Classicly

Mason saw some of the Mordargans now—husky brutes seven feet tall, square-shouldered and thick-muscled. They were gray-skinned with blazing white eyes and savage fangs; they diverged most sharply from the humanoid pattern in the pair of thick, stubby antenna sprouting from their heavy-browed foreheads. Those antenna governed the extra Mordargan sense—the sense of balance, of perspective, of distance-judgment. It made them deadly in a hand-to-hand fight.