After the downfall of Númenor, several clans of Black Númenóreans dwelt in the northern mountains of Eriador. In the early Third Age, they rose to prominence under the Witch-king's rule, carving out a kingdom in the hills of Angmar. From their dark master, they learned the ways of sorcery and were taught to create machinery of war far more advanced than anything the primitive Hill-men of the region could build. As such, the Angmarim became the ruling caste and priests of Angmar, worshiping the Dark Lord Sauron as a god. Even after the Witch-king abandoned Angmar following his war with Arnor, the Angmarim remained loyal to the Lord of the Nazgul and now do his bidding during the War of the Ring.
Angmarim come in several varieties. Some are mere soldiers, while others are High Priests that can summon Fell-spirits from the Void to do their bidding. Some Angmarim priestesses can also summon monstrous Spiders.
Angmarim are found mostly in Angmar but they are reaching out across Eriador. A significant invading force of them can be found in Evendim in the former Arnorian capital of Annúminas. They are usually "normal" difficulty and are always aggressive. They are usually susceptible to the Westernesse damage type.
Umbarrim, Black Númenóreans of Umbar, are also encountered in the lands of Eriador. These Men hail from the Havens of Umbar in the distant south along the coast of the Great Sea of Belegaer. They have kinship with the fearsome Corsairs of Umbar who often raid the coastlines of Gondor.