Variant Deathwatch Chapter badge
Mordelai is the watch commander of Watch Fortress Talasa Prime of the Deathwatch Chapter in the Ultima Segmentum who was seconded to the Long Watch from the Imperial Fists.
Talasa Prime, the archetypal training world for the Deathwatch, maintains an Aquila pattern watch fortress in addition to dozens of attendant watch stations. It has a wide variety of Firstborn and Primaris Marine kill-teams, each tested against those races that would encroach upon Ultramar's borders. Overall command is entrusted to Watch Master Mordelai, a humourless and extremely efficient proponent of Malleus war doctrine, who has the long-standing trust of Chapter Master Marneus Calgar of the Ultramarines himself.
It was Mordelai who first devised the Fortis Kill-team structure for the Primaris Marines who joined the Deathwatch after the Ultimaris Decree of Primarch Roboute Guilliman. He would later go on to help devise other Primaris kill-team patterns such as the Indomitor and Spectrus Kill-teams as the new transhuman warriors proved their value and capabilities again and again during the conflicts of the Era Indomitus.
Sources[]
- Codex Adeptus Astartes - Deathwatch (8th Edition), pg. 15
- Codex Supplement: Deathwatch (9th Edition), pp. 52-53