|“||I care little for the events that occur outside of the confines of my fortress and across the realms of Hell, Heaven, and Man. Crafting and smithing is where I find comfort. Nonetheless, I cannot ignore the calls of my masters, for their requests always require delightfully destructive pieces of craftsmanship from me.||„|
Mulciber is one of the fallen angels, who serves in the legion of Mammon. Before his fall, Mulciber was an Angel in Heaven who served as the chief architect of heaven, designing the countless palaces in the celestial plane so that he may honor God.
Fall from Grace
Mulciber was the grand architect of Heaven, having designed the many stunningly beautiful palaces. He mostly found solace in his work and not wanting to have anything to do with the other angels. He did, however, have a healthy working relationship with Jophiel, who was not elevated to the status of an archangel at the time, with it even resembling something of a teacher/student relationship.
As more of the compounds and cities of Heaven were constructed the more there were rules being enforced to establish the hierarchy. Mulciber was one of the angels who resented the rules being made in Heaven as they would limit his working capabilities. His first act of rebellion was when he was approached by Lucifer, coaxing the angelic builder into using the Secret Fire as the spark to his coal forge, building something that exceeds the splendor of the Heavenly palaces and cities. Mulciber would come to aid Lucifer in creating something out of the Secret Fire, creations akin to what God had in store in the future. But they were found out and were prohibited from ever again using the Secret Fire.
During the War in Heaven, Mulciber was convinced to join the rebellion and helped Lucifer navigate his troops through his heavenly cities, bringing his side much success as they strategically routed and overwhelmed the forces of light. Mulciber was ultimately defeated at the hands of Jophiel herself, deposed of his position and cast into Hell along with the rest of the fallen as the demonic army descended into a disorganized final frenzy.
Architect of Hell
In Hell, he continued being an architect and led the construction of Pandemonium, the new capital of Hell, which was built within one hour, but is greater than any known human structure in scope. This period of time shortly after the fall is when Mulciber is believed to have been the most active. He also took in several apprentices but his greatest student was Machiavillus, a demon who was a famous gunsmith in the Inferno.
Mulciber was commissioned by Mundus to build seven gates so that the legions of Hell may pass through in a bid to conquer the mortal world. While it was no easy task, as the material required to properly sustain the dimensional energies emitted by the Convergence had Mulciber search even beyond the borders of Hell, Mulciber nonetheless succeeded. He set the Seven Gates in place to act as conduits for the Convergence, using the event's energies to form temporal windows for the demons to pass through unharmed.
However, after Sparda defeated Mundus, the six monarchs of Hell, and destroyed the gates with Yamato, Mulciber was punished by Mundus by casting him out of Pandemonium, accusing and shaming the blacksmith in his misperceptions of the Gates' components.
At some point later, Mulciber and Mammon aided Azazel in the construction of the Right Hand of Doom and grafted it onto the right arm of Hellboy, his newborn son. However, some of the monarchs of Hell discovered their plans and invoked the Balrogs to destroy them while some were apprehended by the Furies. Mulciber survived the ordeal but was punished by Beelzebub and thrown into Cocytus.
Unbeknownst to Beelzebub and other nobles, however, Mulciber would continue his work under Azazel's instructions before his subsequent imprisonment, creating the fabled Abyssal Army by using the fires of Hell to mold the damned souls of Cocytus into the infernal legionnaire. He has been doing this tirelessly until the promised End of Days.