Legio Tempestus - Notable Personnel: Indias Cavalerio - Indias Cavalerio was known as "The Stormlord" and was the princeps senioris of the Legio Tempestus during the Great Crusade and the Schism of Mars. He commanded the Warlord-class Titan Victorix Magna, which was damaged during the Epsiloid Binary Cluster Campaign that the Legio carried out alongside Primarch Roboute Guilliman 's forces. As the result of the injury, Cavalerio was forced to accompany the detachment of the Legion's Titans headed to Mars for repairs -- this being the reason for his presence on the Red Planet at the outbreak of the Schism. Cavalerio sought to keep his Legion free from the insidious poison of the Mechanicus' politicking. He believed that the Titan Legions should remain true to their warrior ideals and not be instruments of the Magi's political will, and serve only the interests of the Imperium of Man itself. When the Legio Mortis moved to threaten the Ascraeus Chasmata at the outbreak of the Schism, Cavalerio, who was at the time on patrol with his war engines, hastened to his Legio 's fortress, greatly straining the capabilities of his Titan. Altough not a single shot was fired in the stand-off that occurred, the strain put on the machine made it susceptible to infection by the viral scrapcode which was spreading over Mars. The Victorix Magna was destroyed and Cavalerio severely wounded. As a result of this, and the psychic shock of living through the death of his Titan, he received extensive cybernetic augmentation and underwent the process of complete immersion within an amniotic tank to keep his mind from shattering. Following this, he had been deemed temporarily unfit to command the Legion, and Princeps Kel Sharaq assumed his duties as acting princeps senioris of the Legio Tempestus on Mars. After Cavalerio recovered enough to take to the battlefield, he took command of the first God Machine of the Legion, the Deus Tempestus, and ordered his forces to move out and aid the beleaguered Magma City, which the Legio Mortis was assaulting, supported by other Dark Mechanicum forces. He led his Legion against the impossible odds stacked against it, and succeeded in destroying all of the war engines of the Death's Heads battlegroup -- save for the towering Imperator-class Titan, Aquila Ignis, which proceeded to kill The Stormlord and obliterate the remaining Legio Tempestus war engines.Maximus Karania - After the division of the Legion into two commands, control of the Order's Expeditionary force was invested in the senior princeps Maximus Karania. Where the Stormlord was known for his disdain of the political and doctrinal infighting that had befallen the Mechanicum in the later years after Unification, Maximus Karania was his mirror, subtle and secretive, although with an unimpeachable war record. So adept at intrigue was he that he had long hidden his machinations and strange preoccupations in plain sight. Unknown to most, beneath a professed orthodoxy Karania was a disciple of a certain strand of esoteric machine lore called Teleologicalica, itself a form of arcane numerology, a discipline that purported to predict imminent and all-consuming doom by reference to the patterns of past cataclysms. The Tech-Priests of Estaban III had not accepted the prevailing Mechanicum doctrine that the Emperor was one and the same with the divine being they referred to as the Omnissiah, and paid only lip-service to the Martian Doctrines. Karania's native political cunning in discovering this and his own schismatic doctrine enabled him to make private and secret alliance with the Tech-Priests of Estaban III long before the outbreak of the Horus Heresy. As time progressed, Karania moved to purge his princeps cadre according to the patterns revealed to him by the doctrines of cataclysmic teleology, ensuring that only those inducted into the discipline's innermost secrets remained within his demi-Legion, but was careful to keep such apostasy shrouded from outsiders, although it had not escaped the attention of the Warmaster's agents, who worked upon it to secure Karania to their cause. Following the death of the Stormlord at the beginning of the Schism of Mars, Karania received word from Mars that he was now the de facto master of the Tempestus loyal to the Traitors' cause, Maxim us Karania pronounced that his allied Forge World of Estaban III would henceforth and for all time enjoy the full protection of the Legion in return for the bounty of its mighty foundries. A single archival entry, recovered years after the event, suggests that even with the full extent of Karania's treachery revealed, elements of his own Legion serving further afield declined his recall order and refused to share his betrayal. These he vowed to hunt down and slay, for their very existence made a lie of the teleological precognostications by which Karania was planning and executing, his Legion's future causing him to delve ever deeper into his occult practices. In the aftermath, this hunt would lead Karania and the Traitor Tempestus along many dark and winding paths never before travelled by any Legion of the Collegia Titanicus.Kel Sharaq - Kel Sharaq was the princeps of the Reaver-class Titan Metallus Cebrenia and Cavalerio's second-in-command on the Red Planet during the Schism of Mars. After Cavalerio had been deemed temporarily unfit to command the Titan Legion following his immersion in an amniotic tank, Sharaq assumed the Stormlord's duties as acting Princeps Senioris of the Legio Tempestus on Mars. He met his death in the outskirts of Magma City, when the Legio Tempestus sallied out to defend Koriel Zeth's domain from the Legio Mortis. His war engine was destroyed by the Traitor Imperator-class Titan, Aquila Ignis.Vlad Suzak - Vlad Suzak was the princeps of the Warlord-class Titan Tharsis Hastatus during the Schism of Mars. He, along with his machine, had been obliterated by first salvo fired from the Traitor Imperator-class Titan, Aquila Ignis, although not before he had managed to destroy two enemy war engines.Jan Mordant - Jan Mordant was the princeps of the Reaver-class Titan Arcadia Fortis during the Schism of Mars, being recently promoted from his Warhound princepture, and thus still possessing many traits characteristic to pilots of those war engines. Mordant died during the defence of Magma City, when a lucky strike damaged his Titan's neural network and the subsequent feedback agonies burned out his cerebral cortex.Karania - Karania was the princeps maximus of the Legio Tempestus who had been given overall command of the bulk of the Legion's forces assigned to Roboute Guilliman's Expeditionary Fleet following the Epsiloid Binary Cluster Campaign, during which Princeps Cavalerio's Titan had been damaged, forcing the Stormlord to join the detachment of damaged war engines headed to Mars for repairs.Zafir Kasim - Zafir Kasim was the princeps of the Warhound-class Titan Raptoria during the Schism of Mars. Kasim had been awarded a golden skull-and-cog medallion by the Stormlord after the Epsiloid Binary Cluster Campaign. He disliked being present on Mars and witnessing all the petty squabbles of the Mechanicum, being in these views similar to Princeps Cavalerio. Kasim died shortly after Princeps Sharaq, whom he accompanied in the defence of Magma City, when his engine was destroyed by carapace-mounted ordnance of the Legio Mortis Imperator-class Titan, Aquila Ignis.Lamnos - Lamnos was the princeps of the Warhound-class Titan Astrus Lux. He was the first Legio Tempestus princeps to die during the defence of Magma City, when a Reaver 's missile barrage stripped his Titan of its Void Shields and threw it to the ground, allowing the larger war engine to crush it beneath its bulk.Basek - Basek was the princeps of the Warhound-class Titan Vulpus Rex. He died during the defence of Magma City when a scrapcode interference obscured his Titan's Auspex readings, causing his war engine to tumble into a crater, severing one its weapon arms and buckling its legs in the fall. Basek and his crew attempted to eject, but the Titan chasing them ended their lives in the mercifully swift thunder of hard rounds.Zem Aeschman - Zem Aeschman was the commander of the Legio Tempestus Skitarii forces on Mars during the Horus Heresy. He resolutely supported the Titans with his cybernetically augmented warriors, both in the stand-off between Legio Mortis and the Legio Tempestus near Ascraeus Mons, and in the final defence of Magma City, where he presumably died after his divisions had been wiped out.Sorlan Veykot - Sorlan Veykot was the princeps maximus of the Legio Tempestus during the Sabbat Worlds Crusade and the defence of Orestes. He died in battle against Chaos Titans whilst defending his homeworld from assault, leaving the Legion under the command of First Princeps Rufus Joslin.Rufus Joslin - Rufus Joslin was a first princeps of the Legio Tempestus during the Sabbat Worlds Crusade and the defence of Orestes as well as the commander of the Warlord-class Titan Orestes Magnificat. After the death of his princeps Maximus, he assumed his duties as acting commander of Legio Tempestus forces on Orestes. Joslin was noted for his staunch belief in the Orestean Mechanicus' theological distinction between the notions of the Emperor and the Omnissiah and was heartened by the pre-Heresy document leaked out of the Orestean Analyticae which stated that this belief was true. He understood that the Legio Invicta, which was engaged in defending Orestes from attack and was the chief Imperial force present there, would be less amused as they did not share such faith and venerated the Emperor as the Omnissiah. He was prepared to defend his forge city from Legio Invicta war engines as well if need be, and to this end had his Titans prepare target solutions on the allied Legio 's war engines prior to their mutual drive on Hive Argentum. During the fighting there, however, he met his fate as the first victim of the lumbering Traitor Imperator-class Titan Augmenautus Rex, as it drove Imperial forces out of the hive.Lenix Devo - Lenix Devo was the princeps of the Warlord-class Titan Cullador Braxas and the acting commander of the Titan Legion's forces on Orestes following the death of Rufus Joslin during the battle for Hive Argentum. Like him, Devo was stoutly devoted to his forge city and was ready to defend it from the Legio Invicta, despite his forces being outnumbered four to one. After most of the fighting for Hive Argentum was finished, Legio Invicta Princeps Maximus Pietor Gearhart asked the Legio Tempestus to follow him back to the forge, and was confronted by Devo. He queried as to what Gearhart intended to do, and stated that if the Legio Invicta would move on the forge, the Legio Tempestus would stand in its way. A stand-off occurred, and bloodshed was perhaps averted only by the news of a large Traitor Titan battlegroup moving to threaten Orestes Principal Hive.Guido Prinzhorn - Guido Prinzhorn was the princeps of the Legio Invicta Warlord-class Titan Dominatus Victrix during the defence of Orestes. The Legio Invicta came to the aid of the beleaguered world of Orestes following a campaign it conducted in the Beltran Cluster against the Eldar. One of the victims of those graceful xenos' Titans was the princeps of the Dominatus Victrix. The Orestean Magi agreed to repair the war engine in their facilities, and the Legio Tempestus offered one of its princeps -- Guido Prinzhorn -- to allow the machine to fight. As all Proximus Pattern Warlord-class Titans, the Dominatus Victrix required a full-immersion amniotic interface to operate it, and this Prinzhorn could provide. Despite being a young princeps, and one who has never seen actual combat but only simulations, Prinzhorn was interred in an amniotic tank. He would be assisted by one of the surviving Moderati of Dominatus Victrix, Zane Tarses, as well as crewmen drawn from the Legio Invicta reserve. Prinzhorn was afraid of his first real command, and was predictably less able than an experienced war engine officer. He was aided in his charge by the veteran Moderatus, even though he was initially reluctant to accept this help. Following the battle for Hive Argentum, after the publication of revelations which allegedly proved the truth of the Orestean heresy, Legio Invicta Princeps Maximus Pietor Gearhart wished to move the forces of the two Legions back to the forge to restore order, but was confronted by the Legio Tempestus. Despite being outnumbered by a four-to-one margin, the Titan Legion of Orestes' acting commander issued Gearhart with an ultimatum, telling him to stand with the Legio Tempestus or against it. When Legio Tempestus war engines acquired target locks on Legio Invicta machines, Prinzhorn did the same, but was stopped by Tarses, who forced the princeps to shut down the Titan at gunpoint. Bloodletting between the two Legions was only averted by the emergence of a new threat posed by a previously hidden Traitor Titan battlegroup.Valen Lustig - Valen Lustig was the princeps of the famed Warlord-class Titan Nicomach Ignix. Lustig and his crew were noted for being the sole survivors of their battlegroup, active in the field continously for eight standard days with no sleep or rest. On their way back Mount Sigilite Assembly Yards, they were assaulted at Undergox Edge by a Chaos Warhound-class Titan supported by Dark Mechanicum Skitarii. Due to its exhaustion, the Nicomach Ignix was defeated by the smaller war engine. The Legio Invicta, which moved in to secure the area, saved it from the encroaching Dark Skitarii and its ultimate destruction, but they were unable to help the crew -- Princeps Lustig died from exhaustion and psychostigmatic wounds, while all but one of his crewmen had been killed by Traitor Tech-Guard that managed to board the Titan in the heat of the battle. The sole survivor, Moderatus Dolf Gentrian had his socket connectors shot off while connected to the Titan's Mind Impulse Unit. The state he was in led the medicae to believe that he might never recover his sanity. The Nicomach Ignix itself was a burned-out wreck, and both of them would take a long time to recover. Despite this, the Nicomach Ignix was used as an effective tool of propaganda by the rulers of Orestes, who cited the war engine's steadfast valour in holding the line by itself until it was relieved at the brink of defeat by the Legio Invicta -- no mention was made of the Titan crew's fates.Enhort - Enhort was an Executor Fetial, a diplomat, of the Legio Tempestus during the Sabbat Worlds Crusade and the defence of Orestes. He took part in a conspiracy to topple the world's ruling Adept Seniorus and bring to the light of day the revelations concerning the Emperor's non-divinity, the existence of which he had already been aware of for several standard years. Although his co-conspirator, Master of the Archives Tolemy, was said to be operating only for the sake of personal aggrandisement and cared little for matters of faith, Enhort was a staunch idealist on this subject, believing that it was his duty to disseminate the truth. Legio Invicta Princeps Maximus Pietor Gearhart, who had learned of the details of the coup, ordered Enhort to step down after the latter had assumed the position of Adept Seniorus. Enhort, believing he was in the right, was not about to accede, and instead issued a counter-demand. Violence between the Legio Invicta and the Orestean forge city, and the Legio Tempestus which would invariably defend it, was averted only by the emergence of a new threat posed by a previously hidden Traitor Titan battlegroup. The two Imperial Titan Legions sallied forth to engage them, and before the fighting finished, the danger of schism within the Mechanicus was already over -- Tolemy revealed to Enhort and their associate, Egan, that he had manipulated the data to provide support for the Orestean heresy's theological claims. Enhort was infuriated, stating that altered data undermined their position and the validity of their theological claims, and attempted to contact Gearhart to aquiesce to his demands. Tolemy attempted to strangle Enhort, but was stopped by Egan, who killed him with a weapon brought to the meeting in secret -- and subsequently committed suicide, struck with grief over the falsehood he had assisted. Following this event, Enhort submitted to Gearhart. His ultimate fate is unknown.