Azog

Azog was the name of an Orc chieftain who lived in Moria from about TA 2480 to 2799 (Third Age).

He started the War of the Dwarves and Orcs in TA 2790 by killing Thrór, who came to revisit the ruins of Khazad-dûm.

In the following years, he was the common enemy of all Dwarves, and the war he started climaxed in the Battle of Azanulbizar, where he killed Náin, only to be himself slain by Náin's son Dáin.

His son, Bolg, inherited the rulership in Moria and continued it for another 150 years.

Azog is also a hero from the goblin faction of the Lord of the Rings: The Battle for Middle-earth II - The Rise of the Witch-king