They were named after predators from their homeworld of Medusa and were the toughest warriors within the Legion. As such, they often stood guard at the Anvilarium on the Fist of Iron where Ferrus Manus resided.
A detail of Morlock Terminators that watched over their Primarch were killed when Fulgrim's Phoenix Guard turned traitor and slaughtered them during the early stages of the Horus Heresy. The remaining Morlocks were transferred onto the Ferrum for deployment with the Loyalist Legions against the traitor forces at Istvaan V.
- Gabriel Santar, Captain of the Morlocks, First Captain of the Iron Hands[2a]
- Vaakal Desaan, Captain of the Ninth Company[2a]
- Vermanus Cybus
- 1: Fulgrim (Novel) by Graham McNeill, [Needs Citation]
- 2: Feat of Iron (Novella) - The Primarchs (Anthology) by Nick Kyme
- 2a: Part 1: Wrought of Iron, pgs. 116-121