Uznuk is counted among the Black Uruks of Mordor. Centuries old, he was stationed to Moria, where in that darkness he came under the influence of a nameless entity from the deepest pit. Sent forth from that place, he has spent recent years attempting to turn the huorns of Eriador mad, and thereby make them a threat to all. 

Arlane, who I highly recommend, and whose work can be found at: and l