Legio Atarus - Notable Titans: Immaculata Athartus (Nemesis-class Titan) - The Immaculata Athartus was a Nemesis-class Titan of the Legio Atarus, which served both as the god-engine of the Legion's Grand Master Everard Mazarin, and defender of the Forge World of Atar-Median.Ex Noctia (Warlord-class Titan) - The Ex Noctia was a Warlord-class Titan that took part in the savage and bloody Beta-Garmon conflict during the Horus Heresy. Utilising paired Belicosa Pattern Volcano Cannons, these deadly weapons proved both popular and effective anti-Titan weapons during this conflict. Over the years of the Great Crusade, few enemies of the Emperor could hope to face the firepower of a Battle Titan, and the excessive brutality of the Volcano Cannon was often wasted on xenos hordes and rebel fortifications. Against other Titans, however, such a weapon stood amongst one of the few things that could reliably punch through the hull of such a war machine.Exultant (Warlord-class Titan) - The Exultant was a Warlord-class Titan that took part in the Battle of Beta-Garmon and was eventually destroyed by the Legio Vulpa Titan Nuntio Dolores.War Wrought (Nightgaunt-class Titan) - The War Wrought was a Nightgaunt-class Titan that took part in the Battle of Beta-Garmon and was eventually destroyed by the Legio Vulpa Titan Nuntio Dolores.Aurora Ignis (Reaver-class Titan) - A Reaver-class Titan of the Legio Atarus that served as part of a Janissary Battleline Maniple during the savage fighting of the Beta-Garmon campaign.Bellum Sacrum(Reaver-class Titan) - A Reaver-class Titan of the Legio Atarus which took part in the Drop Site Massacre.Incendrium Rex (Reaver-class Titan) - The Incendrium Rex was a lauded Reaver-class Battle Titan that took part in several campaigns of the Horus Heresy, including the Battle of Beta-Garmon.Liber Bellum (Reaver-class Titan) - A Reaver-class Titan of the Legio Atarus that served as part of a Janissary Battleline Maniple during the savage fighting of the Beta-Garmon campaign. Titans of a Janissary Maniple were often seen in support of Knight Houses, much in the same manner as Questoris Banners gathered in the shadow of Titan Legions. The Liber Bellum spent much of the war for Beta-Garmon as part of a Janissary Maniple fighting alongside the House Arakon Banners. These formations of Imperial Knights largely fought against massed infantry and armour formations, but were always thankful for the commanding presence of a Reaver Battle Titan in their midst.Red Naga (Reaver-class Titan) - The Red Naga is a Reaver-class Titan of the Legio Atarus which took part in the Drop Site Massacre on Istvaan V .Dae Canum (Warhound-class Titan) - A Warhound-class Titan of the Legio Atarus that served as part of a Janissary Battleline Maniple during the savage fighting of the Beta-Garmon campaign.Enervatus (Warhound-class Titan) - A Warhound-class Titan of the Legio Atarus which took part in the Drop Site Massacre on Istvaan V.Fortis Caldreian (Warhound-class Titan) - A Warhound-class Titan of the Legio Atarus that served as the Legion's eyes and ears during the savage fighting of the Beta-Garmon campaign during the Horus Heresy. On Beta-Garmon III, amid the thick toxic clouds where visibility was restricted to only a few hundred metres, the Legio Atarus relied on its Warhound Scouts to find threats or hunt down prey. The reduced height of the Warhound, relative to the Reaver or Warlord, also lent itself to this task, their Princeps closer to the earth and the foes who might hide from the Legion's gaze.Furor Solis (Warhound-class Titan) - A Warhound-class Titan of the Legio Atarus that served as part of a Janissary Battleline Maniple during the savage fighting of the Beta-Garmon campaign.Iron Hunger (Warhound-class Titan) - A Warhound-class Titan of the Legio Atarus which took part in the Drop Site Massacre on Istvaan V.Mandragorax (Warhound-class Titan) - A Warhound-class Titan of the Legio Atarus which took part in the Drop Site Massacre on Istvaan V.Pater Infurium (Warhound-class Titan) - A Warhound-class Titan of the Legio Atarus that served as part of a Janissary Battleline Maniple during the savage fighting of the Beta-Garmon campaign.