Tales of Tolgard
They are the core heavy infantry unit of the armies of the Abyss, serving with distinction in the Blood War and hundreds of other squabbles across the planes. They have the shape of a large, human male with the head of a ram. Despite their appearance, they are mighty warriors, especially in melee combat. They will come together in groups only where a powerful leader can control them and stop them from fighting among themselves; in the absence of such a leader, they will start fighting each other to the death to determine who is the strongest. It is also unwise to keep them too long from battle, as they will soon seek out killing even if it is among their allied troops.