Ulnok
From Warhammer 40k - Lexicanum
Ulnok was a member of the Sons of Horus, during the Horus Heresy and served as First Captain Abaddon's Equerry, near the end of the Siege of Terra.[1]
Led by Abaddon, Ulnok takes part in a Sons of Horus assault on the Custodes aboard the Vengeful Spirit under Constantin Valdor.[2a] Ulnok later accompanies Abaddon and other surviving Sons of Horus officers when they finally reach Lupercal's Court and find Garviel Loken alongside the body of Horus. Ulnok remains aboard the Vengeful Spirit as it retreats from the Sol System.[2b]