Morlocks - History: As the personal honour guard of Ferrus Manus, the Morlocks often stood sentinel aboard the primarch's flagship, the battle barge Fist of Iron, the mightiest of them protecting the gates of the primarch's inner sanctum, the Iron Forge, located within the ship's Anvilarium, the large audience chamber where mighty deeds were planned and unbreakable bonds of brotherhood were forged.The Morlocks were led by Gabriel Santor, the Xth Legion's First Captain and equerry to the primarch. Santor hailed from the Avernii Clan on Medusa, as did all of the members of the Morlocks.Shortly after the corruption of the Emperor's Children's Primarch Fulgrim, his IIIrd Legion was ordered by the Warmaster Horus to rendezvous with the Iron Hands' primarch and attempt to sway Ferrus Manus, Fulgrim's closest friend amongst the primarchs, towards the cause of the Traitors.The two primarchs met aboard Ferrus Manus' flagship. Great bonds of friendship and brotherhood had long existed between them, and Fulgrim felt that he could convince Ferrus of the righteousness of Horus' cause.Fulgrim's hope proved disastrously wrong and the meeting of the two primarchs in Ferrus' private inner sanctum in the Anvilarium did not go well. Ferrus was outraged that his brothers would dare to turn against their father the Emperor.The meeting ended in violence as the Gorgon made his difference of opinion known to the Phoenician with his weapons. Ferrus was determined to stop Fulgrim's betrayal of the Imperium before it could even begin.Ferrus used his silvery necrodermis hands to attempt to destroy Fulgrim's sword Fireblade, but the resultant explosion knocked him out. Fulgrim intended to kill his brother with his own weapon, the warhammer Forgebreaker, but proved unable to kill his oldest friend despite the promptings of the Slaaneshi daemon that now throttled his soul.Instead he took the Gorgon's beloved warhammer, a reminder of the bond the two primarchs had once shared. When Fulgrim emerged from Ferrus' inner sanctum, he gave a signal to his Phoenix Guard who instantly, and in perfect synchronicity, beheaded all ten of the Iron Hands Morlocks who served as Ferrus Manus' bodyguard with their Power Halberds.The Emperor's Children's First Captain Julius Kaesoron struck out against his Iron Hands counterpart, Gabriel Santor, and very nearly killing him with his Lightning Claws.Fulgrim successfully fled the Iron Hands' expeditionary fleet in his personal assault craft, the Firebird, when he ordered his flagship, the battle barge Pride of the Emperor and its escorts, to open fire upon the ships of the 52nd Expeditionary Fleet.This surprise attack crippled them and provided a distraction while Fulgrim and the Emperor's Children fled into the Warp to rendezvous with the rest of their 28th Expedition in the Isstvan System.Things eventually came to a head at the Drop Site Massacre of Isstvan V. Led by First Captain Gabriel Santor, ten full companies of Morlocks hungered to confront the Emperor's Children and make them pay for the dishonourable murders done to their number in the Anvilarium of the Fist of Iron.The Morlock Terminators, led by The Gorgon, formed the centre of the Loyalists' assault as the Primarch of the Xth Legion sought out his fallen brother Fulgrim. Finally the forces of the Emperor's Children and the Morlocks came together in a riot of bloodshed and death.The Morlocks' superior armour and experience gave them an advantage over the rank and file Astartes of the Emperor's Children, but they were greatly outnumbered.While Ferrus Manus and Fulgrim clashed in a final confrontation, the Traitors' revealed their trap, as the second wave of the Loyalist assault, composed of the Alpha Legion, Iron Warriors, Night Lords and Word Bearers, revealed their true allegiance to Chaos.Fulgrim's own honour guard, the Phoenix Guard, answered with a terrible war cry and leapt to meet the Morlocks in a searing clash of blades. Electric fire leapt from the golden edges of the power halberds and the Lightning Claws of the warriors, and a storm of light and sound flared from each life and death struggle.Now surrounded on all sides by Traitors after the second wave had revealed their treachery, the Morlocks were circled by the Traitors and in the midst of cries of pain and roaring savage glee, the Morlocks of Ferrus Manus were slain to a man.It is unknown whether the Morlocks were reconstituted by the Iron Hands Chapter after the events of the Horus Heresy.