Aratas

Aratas was a centaur. To keep the Horde distracted, Aratas ordered his centaur to attack farms and camps all over Kalimdor. Meanwhile, he united all the centaur tribes into a massive army in Desolace.

After Theradras' death, a new elemental leader took control. Aratas called him father.

Quotes

 * "My brothers and sisters - a new order has begun. An order of our ultimate incarnation. Centaur meant to rule this world. Azeroth has far too long been corrupted by the unworthy, foul creatures whose time has passed. Are you willing to follow me and drive these repulsive beings from our land? Are you willing to take what has always been yours?"