Savage Orc

Savage Orc are considered a sub-group of Orcs, notorious for their stone-age technology, and are considered "stupid" and primitive even by Orc "standards". They are extremely stupid, often denying other advanced weapons such as iron cleavers and axes, for weapons made by stone, bone, and wood. They also are most notorious for abandoning the concept of "armor" and often are nearly naked. The only protection they wear is always body tattoos which they believe will magically protect them from harm, although more than often this idea seems to be evident on occasion.

This sub-group of Orcs mostly live in the hot and arid areas of the Badlands, where the searing sun regularly fries the already small brains of the Orcs. Only the most vicious of the Orc tribes live here, as its a fight for survival, and the land is most notorious for having many tribes of Orcs and Savage Orcs in the land fighting for tribal boundaries and loot.

Source

 * Armybook: Orcs and Goblins (5th Edition) pg. 90
 * Armybook: Orcs and Goblins (6th Edition) pg. 11
 * Armybook: Orcs and Goblins (7th Edition) pg. 21