Chaos orc



Chaos orcs (possibly fel orcs ) are orcs that drank from Mannoroth's Chaos Well in Ashenvale Forest and became corrupted. They were orcs of the Warsong clan that followed Grom Hellscream's decision to drink from the well to gain power in order to defeat Cenarius and his forces (Shadowleaves, Moonhunters, and Nightblades). By drinking from the well, they were further corrupted with more of Mannoroth's blood, turning red and growing larger.

Chaos orcs were capable of causing special damage known as Chaos damage. Chaos orcs were units seen in the Warcraft III: Reign of Chaos orc campaign.

Chaos orcs also fought under the banner of the Burning Blade during the First War. Some of the orcs who passed through the Dark Portal were driven mad, becoming chaos orcs and joining the Burning Blade.

Fel orcs?
Though the Monster Guide calls these orcs fel orcs, there seems to be some level of distinction between them. Grom's chaos orcs did not show the level of mutation of the fel orcs in Outland. They had not yet grown spines or bony structures from their backs and arms like those fel orcs. They also lacked the six long and skinny fangs of further mutated fel orcs. Other than being red, chaos orcs looked like regular orcs and could revert back to regular orcs, for example with Grom it was the help of a special ritual. It can be assumed that with continued exposure to the corruption from Mannoroth's blood they may have mutated into the more physically demonic fel orcs (and the process would likely be irreversible). However, both are created from Pit Lord blood, and some fel orc mobs in Hellfire Peninsula just use the normal orc model colored red instead of the true fel orc model. If this is not just a mechanic (for wearing helms, shirts, and such), it shows that there may be 'intermediate' fel orc stages that chaos orcs may be a part of. There is also a chance that the difference is related to the possibility that "fel orcs" as we know them were not conceived by Blizzard until Warcraft III: The Frozen Throne.

Cataclysm
It appears that chaos orcs as one of the random Horde Portal-Sentrys are guarding the Dark Portal for the Horde along with the Alliance.The General Goods Vendor also has this model.