The Skull Breakers would be known as Headshrinkers. They hold to an ancient belief that the head holds the spirit and power of a person. They hold rituals to remove the head and to shrink them. They do not take the heads of people that they have killed in combat. They are pretty likely to take captives. In battle they are more likely to remove the heads of the fallen enemy and use them to count how many they each killed. Lying about this is a grave offense. Skull Breakers are generally named Skullbreaker.
Skull Breakers are recognized by the skulls of creatures that they wear or brandish. They can also be identified by their long braided hair and necklaces made of jawbones and ears. These necklaces are strung with hair.
They are currently led by High Chief Orwain Skullbreaker.