Guilliman

Biodata

Feature	Details
Name	Roboute Guilliman (also rendered Robert Guilliman)
Alias(es)	Lord of Ultramar; Thirteenth Primarch; Gene-Primarch of the Ultramarines; Regent of the Imperium; Son of War
Species/Race	Primarch; one of twenty-one Scions created through the Emperor's gene-alchemy and Warp power 347 368
Gender	Male
Affiliation	Imperium of Man; Ultramarines; Macragge and Ultramar
Occupation/Role	Ruler of Ultramar; Imperial Regent; military commander and administrator
Status	Alive; resurrected after ten thousand years in stasis 279 280
First Appearance	Seen alive within the stasis field in the Sanctum of Guilliman 274

Background / History

Guilliman was created in 792.M30 as the thirteenth of the Emperor's twenty-one Primarchs. His material body was paired with a Warp essence described as the echo of order from Ultramar's five hundred worlds; this essence causes those around him to be drawn into his systems, workload, and rules. 368

He was raised on Macragge by Lady Thalassa Yuton and Lord Konnor. Their parental care remained central to him long after becoming the Regent: in a later dream, he recognizes Yuton's childhood height marks and kneels before Konnor as his father. 654 655

Following the Great Heresy, Guilliman established the High Lords Council and implemented the Codex Astartes. His former attempt to build the Second Imperium with Sanguinius and Lion El'Jonson left him deeply wary of both the project's political strain and Lion's unpredictability. 425 538

Fulgrim's betrayal left Guilliman mortally wounded and confined in stasis for ten thousand years. Sanguinius and Zhou Yun later arranged to purge the lingering corruption from his wounds by killing and restoring him; Fulgrim attempted to corrupt or possess his body during this process. 239 278

Guilliman awakened during the Black Legion's assault on Fortress Hera. He immediately slaughtered the invaders, reunited with the resurrected Sanguinius, and learned that the Imperium had become a theocratic, decaying state that worshipped both the Emperor and Primarchs as gods. 279 280 281

Appearance

Guilliman is a towering Primarch with the appearance of a handsome Macragge military noble. Even before his resurrection, depictions of his face were recognizable enough that Zhou Yun could impersonate him convincingly. 134 286

• Short, dazzling golden hair; later shows white strands from exhaustion. 286 594
• Pale, marble-like features and a stern, rational expression. 286 594
• Golden eyes associated with wisdom and reason, with deeply concealed anger. 134
• Over three meters tall and physically imposing even among Astartes. 286
• Usually wears blue-and-gold power armor, most notably the Armor of Fate. 279 286
• Can manifest a golden, Warp-infused form under extreme threat. 627

Personality

Guilliman is an idealist who believes humanity can reach a better future despite the galaxy's cruelty. Sanguinius considers him the proudest of the Primarchs—not because he boasts, but because he genuinely believes that he can lead humanity toward salvation. 281

He is rational, courteous, and frank in personal dealings, carefully hearing reports from soldiers, inquisitors, Mechanicus representatives, and xenos envoys after his resurrection. The collapse of the Imperium nonetheless devastates him; he carries guilt for failing to reach Terra in time and for the fates of the Emperor and Sanguinius. 281

His defining flaw is compulsive responsibility. Guilliman does not enjoy ruling, but believes that many vital duties can only be done by him. This makes him chronically exhausted, reluctant to delegate, and vulnerable to Warp attacks that weaponize his accumulated fatigue, grief, and self-reproach. 332 360 612

Despite his materialist worldview, he gradually confronts the fact that he is a Warp-infused Primarch. He remains uncomfortable with faith, miracles, numerology, and psychic phenomena—even when his own powers repeatedly prove they exist. 323 347 692

Abilities & Skills

Primarch Physiology

Guilliman possesses the physical strength, speed, resilience, and cognition of a Primarch.

• Resumed combat almost immediately upon resurrection, cutting through Black Legion berserkers with the Emperor's Sword. 279
• Neutralized a toxin refined by a Slaaneshi avatar within minutes. 302
• Survived fighting Fat Tiger, a Great Daemon capable of draining power from those it considers friends. 289
• Decapitated Chaos Lord Haken the Star-Ender less than a minute after arriving on Alert Star. 537
• Can endure the vacuum of space, though he himself remains skeptical of this fact. 712

Strategic Command

Guilliman excels at battlefield coordination, logistics, and precise force deployment.

• Organized Grey Knights, Ultramarines, and Blood Angels into coordinated formations immediately after awakening. 280
• Used the Anywhere Door to personally micro-manage force movements while Ultramarines and Blood Angels retook nearby core systems. 291
• Directed decapitation strikes across Alert Star using intelligence and Zhou Yun's devices, eliminating enemy leaders in half an hour. 537
• Maintained the Tau front as a controlled conflict to train Imperial forces and consume excess production capacity. 691

Administrative Genius

Guilliman can process military, political, and economic information on an immense scale.

• Rebuilt Ultramar's administration and military capacity after his return despite constant overwork. 291 332
• Negotiated extensive cooperation with the Eldar involving technology access, intelligence sharing, joint command, and territorial interests. 309
• Identified inefficient distribution and over-specialization as major causes of Imperial economic dysfunction. 691
• His Warp nature subtly pushes nearby people into prolonged overtime and acceptance of his planned order. 368 427

Warp Essence of Order

Guilliman's Warp essence is tied to the order of Ultramar's five hundred worlds.

• Those near him are unconsciously drawn into his organizational norms and workload. 368
• His influence becomes more pronounced as he leads Imperial reforms on Terra. 427
• He has little natural awareness of this Warp connection and initially insists on a materialist understanding of himself. 347

King's Hand

Guilliman can cure the Tear Plague through direct contact, an ability he did not know he possessed.

• His presence immediately cures patients in an Ultramar ward. 323
• He and Zhou Yun travel through Ultramar using the Anywhere Door to heal further victims. 323
• The Ecclesiarchy publicizes these cures as miracles, much to Guilliman's discomfort. 323

Equipment

• Armor of Fate — His signature blue-and-gold power armor; durable enough to withstand Fat Tiger's attacks and associated with his resurrection. 279 289
• Emperor's Sword — A perpetually burning blade used against Black Legionnaires, Magnus, and other enemies. 279 370
• Hand of Dominion — A cerulean power fist capable of crushing Haken's Chaos relic and tearing off his head and spine. 537
• Anywhere Door — A device supplied by Zhou Yun that Guilliman uses for rapid administration and battlefield command. 291 323

Relationships

• Sanguinius — Brother, co-ruler of Ultramar, and Guilliman's most important emotional support after his resurrection. Guilliman shares power over Macragge and Ultramar with him. 280 286 570
• Zhou Yun / Saint Doraemon — Ally who helped kill, purge, and resurrect Guilliman. Guilliman distrusts Zhou Yun's Warp nature but accepts his aid for humanity's sake. 280 282
• Fulgrim — Brother whose betrayal caused Guilliman's ten-thousand-year stasis. Guilliman remains furious and distrustful even toward Fulgrim's clone, though he later lets the clone assist with administration. 570 612 616
• Lady Thalassa Yuton — Adoptive mother on Macragge; Guilliman retains profound love for her and promises to rest when she urges him to care for himself. 654 655
• Lord Konnor — Adoptive father on Macragge; Guilliman credits him with teaching him something more genuine than ruling. 655
• Lion El'Jonson — Estranged brother and former Second Imperium co-ruler. Guilliman sees Lion as valuable in desperation but dangerously disruptive in stable circumstances. 538
• Leman Russ — Brother whom Guilliman respects as a warrior but distrusts politically due to Russ's unpredictability and past conflicts. 404 570
• Mortarion — Former enemy and uneasy associate. Their arguments center on responsibility, love, resilience, and numerology; Mortarion ultimately stays near Guilliman to protect him. 691 692
• Belisarius Cawl — Mechanicus ally responsible for the Armor of Fate and the means of Guilliman's resurrection. 239 279
• Demetrian Titus — Ultramarine whom Guilliman reinstates and assigns to Saint Doraemon's honor guard, affirming that past suspicion cannot erase Titus's honor. 457

Story Role / Major Arcs

Resurrection and Return to Ultramar

Guilliman is targeted for restoration because his administrative and material capabilities are considered indispensable. After his body is endangered by Fulgrim's corruption and a Chaos assault on the Sanctum, he resurrects, retakes Fortress Hera, and reunites with Sanguinius. 239 278 279 280

Rebuilding Ultramar

After learning the Imperium's condition, Guilliman chooses hope over despair and begins restoring Ultramar. He shares authority with Sanguinius, coordinates the reconquest of nearby systems, and confronts threats ranging from the Tear Plague to Fulgrim's schemes. 281 286 291 323

Regent on Terra

Guilliman travels toward Terra, assesses the High Lords, and moves to replace officials who obstruct reform. He launches the Unyielding Crusade and, with Mars's support, establishes dominance over the High Lords Council. 345 425 427

Architect of a New Order

Guilliman seeks a cooperative order in which the Emperor and all loyal Primarchs can share wisdom and leadership. He plans to recover his brothers, rebuild the Imperium's institutions, and resolve its economic inefficiencies while continuing its wars. 403 404 691

Notable Quotes

“But hope still remains.” 281

“I have never felt happy ruling this Imperium.” 332

“There hasn't been a single moment I've coveted the power in my hands, nor a single moment I've wanted to be in this current position.” 612

“True resilience is born from responsibility.” 691

Trivia

• Zhou Yun once impersonated Guilliman with an altered face, causing Blood Angels to briefly believe their Primarch had returned. 134
• Guilliman's Warp essence is valued by the Fourth-Dimensional Pocket as effectively equivalent to Ultramar itself. 368
• His association with order is so intense that Zhou Yun calls him a “congenital overtime saint.” 368
• Guilliman is horrified by the Ecclesiarchy and by the idea that he is treated as a divine being. 280 323