Herume Aphael
From Warhammer 40k - Lexicanum
Herume Aphael was a Sorcerer of the Cult of the Pyrae of the Thousand Sons during the Battle of the Fang[1a]. During the battle, Herume commanded the legion's auxiliary forces, such as the Prospero Spireguard and Cataphract Class Robots. Aphael oversaw a ritual to weaken the anti-sorcery miasma of Fenris to the point of allowing Magnus the Red to enter the Materium. However, he used Aphael as his unwitting host for materialization, killing him.[1b]