Rogrog was the Olog Warlord of the Uruk-Engmair, the confederation of Orc-tribes under the sway of the Witch-king of Angmar. He commanded the principal forces facing the Arnorian successor states (Arthedain, Cardolan, and Rhudaur) during the struggle between the Northern Dúnedain and the Witch-kingdom from T.A. 1300 through T.A, 1975, His minions occupied the wilds of the Lone Lands throughout most of this era.