Nightmare of Ka'hok, Sworn of Umun'arath

Nightmare of Ka'hok, Sworn of Umun'arath is an Ultra Nightmare Legionary who appears in the Dungeon, Duality. They appear in the third encounter "Unlock the Vault" and is the first miniboss that needs to be killed before progressing the encounter.

Gameplay
The Nightmare of Ka'hok is very aggressive, frequently charging players it sees while firing its Cabal Slug Shotgun at full speed. It will not hesitate to launch its Cabal Frag Detonator or use it in melee. However, it has no particular mechanics after being made physical by planting the correct standards, and will capitulate to focused fire, progressing the encounter.

Trivia

 * According to the name, Ka'hok is loyal to Umun'arath, suggesting that they took part in the Midnight Coup that overthrew Emperor Calus.