Alak-Hul, the Darkblade

Alak-Hul is a Hive Darkblade and the boss of The Sunless Cell. Alak-Hul, and his consort, Verok, were present at the Hellmouth when Eris Morn and Eriana-3 lead their fireteam to assassinate Crota, Son of Oryx. Following the raid, Alak-Hul and Verok instigated a rebellion against Oryx, before he was imprisoned aboard the Dreadnaught.