Gender: Male
Age: Ageless
Faction: Imperium Of Man
Appearance:

Personality: Dorn is never compromising, never stinting in any aspect of duty. The stone in his soul was his ability to bear whatever his father needed of him, an unyielding nature which made him both a master of defence in war, and an indomitable fighter on the attack. An Implacable disciple in the pursuit of the cause given flesh; without compromise and in who loyalty and duty was as integral as blood and breath.
Wargear:
The Auric Armour - Commonly dressed in baroque Power Armour of burnished copper and gold, Dorn also wore a red velvet cloak and an unfurled eagle-wing motif was heavily present on much of his wargear, most notably on a decorative section of his armour that rose above the shoulders.
Storm's Teeth - This colossal Chainsword, too weighty for any but a Primarch to wield, is said to have been crafted by the weaponmasters of Inwit before the coming of the Emperor. Its razored teeth can shred metal, stone and flesh with ease and while the Primarch of the Imperial Fists Legion has many arms at his disposal, some relics of far greater power, it is this blade which has served him faithfully for so long that he favours most.
The Voice of Terra - Presented to Rogal Dorn by the Legio Custodes to honour the Primarch's appointment as Praetorian of Terra, this tactical Bolter follows the pattern of the Legio Custodes' own weaponry, albeit redesigned for the hand and might of a Primarch to wield.
Teleport Homer - A Teleport Homer was a device of ancient Imperial technology utilised by the Adeptus Astartes, the forces of the Inquisition and the Chaos Space Marines to allow teleportation through the Warp from one location, usually an orbiting starship, to a point on a planetary surface. A Teleport Homer transmits a special signal that suits of Terminator Armour can lock onto to allow their users to teleport to a given location through the Immaterium with great accuracy by using teleporter technology located at the point of origin.
Frag Grenade - A Frag Grenade is an anti-personnel grenade commonly used by the military forces of the Imperium of Man. It produces a blast of shrapnel that can shred unarmoured troops. The blast has the tactical advantage of forcing the enemy to duck into cover to avoid damage. In effect, the blast of a Frag Grenade neutralises any movement advantage held by an opposing force by pinning them to their position.
The Ætos Dios - Following several attempts on Rogal Dorn's life following the outbreak of the Horus Heresy, Mago Telluria constructed for him a unique heavily customised personal Thunderhawk gunship to convey him both in battle and to shield him as he conducted missions in respect of the defences of Terra. In lieu of its usual weapons, this particular gunship was equipped with a Turbo-Laser and a single Titan Void Shield.
Background:
After the internment of the Emperor in the Golden Throne, Dorn was stricken with grief. He felt the Emperor's near-demise to be his fault and led his Legion on a crusade of penitence across the Imperium. He was summoned back to Terra when Roboute Guilliman announced the adoption of his Codex Astartes, turning the large Space Marine Legions into the much smaller 1,000-man Space Marine Chapters. Dorn was initially outraged at this proposal, feeling that the Imperium blamed him (and rightly so, he thought) for the fall of his Brother Marines. However, realizing what damage another internal conflict could do to the fragile peace of the Imperium, Dorn finally relented and agreed to the Second Founding. This was a dark period in Rogal Dorn's life; he had both failed the Emperor and his Legion now faltered without the guiding light of the Master of Mankind.
Rogal Dorn is believed to have "died" in 781.M31 whilst fighting a Chaos Fleet during the 1st Black Crusade that had emerged from the Eye of Terror under the command of the returned Abaddon the Despoiler, with a vastly outnumbered Imperial force. Seeing the importance of attacking the enemy fleet while they were still preparing to invade Imperial space, Dorn relied on hit-and-run attacks until his reinforcements could arrive. Dorn "died" onboard the Chaotic Despoiler-class Battleship Sword of Sacrilege after leading a desperate attack on its bridge. The only trace of the missing Primarch uncovered by the Imperial Fists' subsequent searching was a single fist. Dorn's skeletal hand was returned to the Phalanx where, over the years, it has been scrimshawed, the bones intricately engraved with the heraldry of all the Imperial Fists Chapter's previous Chapter Masters.
However with the Emperor of mandkind in danger once more, Rogal Dorn has appeared from hiding. To atone for his failures.