Dragon Ogres

Dragon Ogres are amongst the world's most ancient living creatures. They are immortals who can only die in battle, monstrous beings that rouse only in the name of destruction. A long time ago, they made a pact with Chaos gods. The Gods would give them immortality and in return they would fight with Chaos.

The Dragon Ogres are strikingly fearsome. As well as their lizard-like lower sections of thick hide covered with horns and scales, they are protected by plates of armour. Dragon Ogres have broad and incredibly muscular abdomens, with thick gut plates, loin cloths, skulls and chains. Oversized teeth protrude from their maws, and around their bodies are various hooks, bones, claws and fins.

Source

 * Warhammer Armies: Warriors of Chaos