Centaur
The Centaur were a race of horsemen, with bodies like horses and torsos very similar to humans at the front of the horse body.
Once one of the main races of Elysium, the Centaur were destroyed by the arrival of the Spawn, with their capital city becoming the Spawn capital Szagan. Though they survived a while after the invasion, the Spawn made it their mission to hunt down and exterminate the Centaur, for reasons which are not fully clear.