Manman-men

The Manman-men were a sentient race of centaur-like humanoids made from an assortment of human parts. They had a society in which the front half were known as goodly, rational thinkers and philosophers, while the back half were the "do-ers" who were evil and selfish, but did most of the work.
The Manman-men were largely destroyed and scattered during the Destruction of the Manman-men by the Chiefdoms of Blood and Bone. The Bone Goblins hold a holiday every year celebrating the destruction of the Manman-men.