Guilliman

Biodata

Feature	Details
Name	Roboute Guilliman
Alias(es)	Lord of Ultramar; Primarch of the Thirteenth Legion; Border Warden of Imperium Secundus; Governor-General of the public Imperium Secundus arrangement 71 72 74
Species/Race	Primarch
Gender	Male
Affiliation	Ultramarines; Imperium of Mankind; Imperium Secundus
Occupation/Role	Commander of the Ultramarines; ruler and administrator of Ultramar; military commander
Status	Active; leads the Ultramarines into the Webway to reinforce Ferrus Manus's defenses 521
First Appearance	Chapter 62

Power Progression

Stage / Realm / Level	Chapter	Notes
Blackstone equipment	111	Francis gives Guilliman externally mounted Blackstone armor and a matching shield, intended to resist psychic attacks.
Blackstone-armored combatant	113	The armor nullifies incoming psychic flames; Guilliman uses a Blackstone sword forged by Francis to confront Lorgar and Tzeentch daemons.
Tyranid hive-ship assault	313	Wields the Blackstone Sword to cut through Tyranid warriors and reaches the Norn Queen's nest.
Fate Armor bearer	405	Archmagos Cawl presents the Fate Armor, which is filled with the Emperor's psychic power.
Emperor's Sword and Fate Armor	408	Uses psychic flames channeled through the armor and Emperor's Sword to annihilate Nurgle daemons and defeat Kalama.
Chaos-corrupted, Emperor-empowered state	473	After Ynnead wounds him, Chaos energy enters his body and clashes with the Emperor's golden psychic power, leaving him in an unstable half-black, half-golden state.

Appearance

Guilliman is a towering Primarch with golden hair and blue eyes. He is commonly seen in blue-and-gold or azure-and-gold battleplate, though he also uses specialized Blackstone and Fate Armor. 303 363 519

• Wields the Blackstone Sword during anti-psyker and anti-Tyranid engagements. 113 313
• Uses the Emperor's Sword while wearing Fate Armor against Nurgle's forces. 408
• His armor is often visibly damaged after extended front-line fighting. 242 395

Personality

Guilliman is defined by responsibility toward Ultramar and the wider Imperium. During the Warp storms, he personally manages an overwhelming volume of administrative work and views Imperium Secundus as a contingency to preserve humanity rather than a bid for the throne. 71 72

He is highly rational, but not rigidly so. He supports dividing the Legions out of concern for the Imperium's future, yet is willing to disregard Codex deployment regulations when Aldim's crisis demands it. 125 404

Despite his administrative role, Guilliman finds his true fulfillment in battle. Fighting through the Tyranid hive ship rekindles his conviction that he belongs on the battlefield rather than behind a desk. 313

His faith in the Imperial Truth remains central to him. After reading Lorgar's Book of Sacred Words, he concludes that the Emperor is not a god, but “the greatest of all humans.” 411

Abilities & Skills

Strategic Command

Guilliman combines large-scale administration with battlefield command.

• Organizes Ultramar during the Warp storms and plans Imperium Secundus as a rallying point for surviving Imperial forces. 71 72
• Identifies the value of Francis's genetic-contamination strategy against Tyranid adaptation and commits to eliminating the swarm completely. 305 309
• Leads fleet actions, boarding assaults, and planetary purges personally. 313 404 519
• Balances tactical doctrine with battlefield necessity, overriding Codex deployment limits during the Aldim assault. 404

Primarch Combat Prowess

Guilliman is a formidable close-combat fighter capable of leading from the front against daemons, Tyranids, and Chaos warships.

• Fights Lorgar while directing a wider battle against Horus's forces. 102 113
• Cuts through Tyranid blade warriors and reaches the Norn Queen's nest aboard a hive ship. 313
• Personally leads the Ultramarines' purge of Aldim and confronts Rotigus, the Rainfather. 404
• Battles through Chaos fleets toward Terra, using the Emperor's Sword to destroy daemonic enemies. 519

Anti-Psyker Warfare

Blackstone equipment gives Guilliman a decisive defense against psychic and Warp-based attacks.

• His Blackstone armor dissipates psychic blasts and allows him to fight through daemonic attacks unharmed. 113
• The Blackstone Sword cuts through Tyranid carapace that can withstand ordinary power swords. 313
• He regards the Blackstone armor and sword as his defensive anti-corruption set. 408
• The armor can be severely damaged and requires Soul Drinkers expertise to repair. 243

Fate Armor and Emperor's Sword

Fate Armor channels the Emperor's psychic power, while the Emperor's Sword projects destructive golden flames.

• Fate Armor is presented by Cawl as armor filled with the Emperor's psychic power. 405
• In combination with the Emperor's Sword, it burns daemon engines, Hellbeasts, and Nurgle daemons to ash. 408
• Guilliman considers Fate Armor and the Emperor's Sword his offensive, purifying equipment set. 408
• Malcador nevertheless states that Guilliman cannot personally use psychic power, limiting his ability to fight directly in the Warp. 521

Equipment

• Blackstone Armor and Shield — gifted by Francis; protects against psychic attacks. 111
• Blackstone Sword — forged by Francis; effective against daemons, psychic defenses, and Tyranid carapace. 113 313
• Fate Armor — psychic armor created by Cawl and filled with the Emperor's power. 405
• Emperor's Sword — channels golden psychic flame against daemonic forces. 408 519
• Ork Telephone — used to contact Francis when Yvraine and their child are endangered. 395

Relationships

• Francis Crick — Eleventh Primarch and brother. Francis supplies Guilliman with Blackstone equipment, advises him during crises, and later saves him from Chaos corruption; their relationship is also marked by suspicion, manipulation, and disputes over the Third Empire. 111 305 431 486
• The Emperor — father. Guilliman remains loyal to him, but questions his intentions, humanity, and treatment of the Primarchs. 231 395 411
• Lion El'Jonson — brother and ally in the formation of Imperium Secundus; Lion serves as Regent while Guilliman becomes Border Warden. 72
• Sanguinius — brother and ally in Imperium Secundus; Guilliman considers him a more suitable leader for the emergency regime. 72 74
• Lorgar — traitorous brother and ideological enemy. Guilliman rejects Lorgar's offer of the Warmaster's position and later fights him using Blackstone equipment. 62 113
• Yvraine — mother of Guilliman's daughter. He refuses the Aeldari demand to surrender her and their child, and later entrusts their safety to Francis when duty forces him to defend the Imperium. 395 411 460
• Connor — Guilliman's adoptive father. The memory of Connor's murder becomes central to Guilliman's mental ordeal and near-corruption. 485 486
• Tarasha Euten — a deeply important maternal figure whose safety Guilliman is forced to weigh against saving Macragge. 418 465
• Marneus Calgar — Chapter Master of the Ultramarines and battlefield subordinate; fights beside Guilliman during the Tyranid and Terra campaigns. 309 519
• Ferrus Manus — brother and Webway ally. Guilliman leads the Ultramarines to reinforce Ferrus's defense of Karasta. 521

Story Role and Major Arcs

Imperium Secundus

Guilliman confronts Lorgar on Nuceria and rejects his invitation to join Chaos as Warmaster. After Warp storms isolate Ultramar, Guilliman organizes its defenses and argues that Imperium Secundus must serve as a safeguard for humanity rather than a rival empire. 62 71

With Lion El'Jonson's arrival, he formally establishes the Second Imperium, appointing Lion as Regent and taking the office of Border Warden. Later, he accepts a public Imperium Secundus as a deception intended to mislead Alpha Legion infiltrators while preparing a return to Terra. 72 74

Legion Reform and the Blackstone Campaign

Guilliman supports splitting the Legions, acknowledging that his brothers may see the proposal as an insult to their loyalty. 125

Francis's Blackstone armor and sword transform Guilliman's position against Warp threats. He uses them to withstand Lorgar's psychic attacks and lead a direct assault through daemonic forces. 111 113

Tyranid War

Guilliman adopts Francis's plan to disrupt Tyranid adaptation by feeding the swarm inferior genetic material, then commits the Imperium to destroying the Tyranids before they can evolve countermeasures. 305 309

He personally boards a Tyranid hive ship, battles through its living interior, defeats the Norn Queen, and helps throw the swarm into disarray. 312 313

Family, Duty, and Nurgle's Invasion

When Yvraine is about to give birth in the Chaos-attacked Commorragh, Guilliman is torn between protecting his family and defending the Imperium. He ultimately leads the Ultramarines to Aldim while entrusting Yvraine and their child to Francis. 394 395

On Aldim, he leads a purge of Nurgle corruption, hunts Mortarion's forces, and confronts Rotigus. After receiving Fate Armor, he uses it with the Emperor's Sword to destroy Kalama and scatter the daemon host. 404 405 408

Third Empire Dispute

Francis proposes the Third Empire and threatens to expose Guilliman's role in Imperium Secundus unless Guilliman supports a vote for the next Emperor. Guilliman initially treats the plan as Horus-like rebellion before reluctantly agreeing to vote for Francis. 431

Chaos Corruption and Recovery

Guilliman resists Ynnead amid a Warp conflict, but an injury allows Chaos energy to flood into him and leaves him caught between black corruption and the Emperor's golden power. 472 473

He falls into a coma and confronts traumatic memories within a mental prison, including Connor's murder and his own rage. Francis intervenes with a brain-computer interface to stabilize him before he succumbs completely. 485 486

Return to Terra and the Webway

Guilliman leads the Ultramarines through Chaos warships and daemon drakes toward Terra, fighting Vashtorr's forces despite physical and mental exhaustion. 519

After the Emperor's return, Malcador orders Guilliman to take the Ultramarines into the Webway and reinforce Ferrus Manus against daemon legions, leaving Guilliman frustrated that he cannot fight at his father's side. 521

Notable Quotes

“Believe in science! Destroy the heretics!” 113

“Father is not a god. He is human—the greatest of all humans.” 411

“I belong on the battlefield!” 313