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What Happened to the Primarchs?

After the Horus Heresy, the Primarchs either died, disappeared, or became servants of Chaos. Over the following millennia, most Primarchs vanished from Imperial history, leaving the Imperium without their leadership.

QUICK FACTS

ItemDetail
GroupPrimarchs
Created ByEmperor of Mankind
Number20
Current StatusDead, missing, or serving Chaos
EraPost–Horus Heresy

EXPLANATION

The Primarchs were the superhuman generals created by the Emperor to lead the Space Marine Legions during the Great Crusade. During the Horus Heresy, the Primarch Horus led a rebellion against the Emperor, and several Primarchs joined him.

The war resulted in the deaths or disappearances of many Primarchs. Loyalist Primarchs either died during the conflict or later vanished in battles across the galaxy. Traitor Primarchs retreated into Warp-dominated regions and many eventually became Daemon Princes serving the Chaos Gods.

By the modern Warhammer 40K timeline, most Primarchs are no longer active leaders within the Imperium. Their legacy survives through the Space Marine chapters descended from their legions.

LOYALIST PRIMARCHS

PrimarchFate
Lion El’JonsonRecently returned in the modern timeline
Jaghatai KhanMissing in the Webway
Leman RussDisappeared into the Warp
Rogal DornMissing, presumed dead
SanguiniusKilled by Horus
Ferrus ManusKilled during the Horus Heresy
Roboute GuillimanRevived and leading the Imperium
VulkanDisappeared but believed immortal
Corvus CoraxVanished after the Heresy

TRAITOR PRIMARCHS

PrimarchFate
HorusKilled by the Emperor
FulgrimDaemon Prince of Slaanesh
PerturaboDaemon Prince of Chaos
AngronDaemon Prince of Khorne
MortarionDaemon Prince of Nurgle
Magnus the RedDaemon Prince of Tzeentch
LorgarDaemon Prince of Chaos
Konrad CurzeKilled by an assassin
Alpharius / OmegonStatus uncertain

Two Primarchs and their legions were erased from Imperial records and their identities remain unknown.

WHY IT MATTERS

The disappearance of the Primarchs left the Imperium without its greatest leaders. Their absence shaped the Imperium’s decline and fragmentation over the next ten thousand years.

RELATED LORE

Who Are the Primarchs
What Is the Horus Heresy
Which Primarchs Are Still Alive
Who Betrayed the Emperor Among the Primarchs

FAQ

Are any Primarchs still alive?

Yes. Roboute Guilliman has returned, and Lion El’Jonson has also reappeared in the modern timeline.

Why did most Primarchs disappear?

Many died during the Horus Heresy or later vanished during conflicts across the galaxy.

author avatar
Baron Von Vault Founder & Gaming Systems Analyst
Baron Von Vault is the founder of the Von Vault Network and creator of D4Dead, BorderlandsHQ, and 40KFAQ. He publishes research-driven analysis of action RPG and looter shooter systems, focusing on progression loops, class mechanics, and endgame design.
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