The Black Legion is the biggest and most feared Chaos Space Marine faction in Warhammer 40k. Led by Abaddon the Despoiler, they’re the ones who really push the Long War against the Imperium, and they’ve been doing it for ten thousand years.
What is the Black Legion?
They’re a Chaos Space Marine Legion, but not one of the original nine traitor legions. The Black Legion was founded after the Horus Heresy by Ezekyle Abaddon, Horus’s former first captain. He took the shattered remnants of the Sons of Horus and built something new.
Abaddon didn’t want to just rebuild Horus’s old legion. He wanted an army that would succeed where Horus failed. So the Black Legion isn’t a direct successor, it’s a fresh start. They recruit from all sorts of traitor Astartes, more than Sons of Horus.
Origins and the Long War
After Horus was defeated, the Sons of Horus were broken. Abaddon gathered the survivors in the Eye of Terror and fought in the Legion Wars. Near the end of that infighting, he renamed his force the Black Legion and declared the Long War against the Imperium.
The Legion doesn’t have a homeworld. They operate from the Pyris Nebula at the edge of the Eye of Terror, but mostly they’re scattered across the galaxy in countless warbands. When Abaddon calls, they unite for a Black Crusade.
- Founded by Abaddon after the Horus Heresy, during the Legion Wars.
- Includes many former Sons of Horus, plus Traitor Astartes from other backgrounds.
- No homeworld; based in the Pyris Nebula near the Eye of Terror.
- Fights the Long War to overthrow the Imperium and the False Emperor.
Abaddon the Despoiler
Abaddon is the Warmaster of Chaos and the undisputed champion of the Ruinous Powers. He’s the one who launches the Black Crusades, massive invasions that have nearly broken the Imperium more than once.
He wields the daemon sword Drach’nyen and wears Terminator armour. Under his command, the Black Legion has become the most organised and dangerous Chaos threat in the galaxy.
How they fight
The Black Legion fights like a spearhead. Most of the time they’re scattered in small warbands, raiding and causing chaos. But when Abaddon gathers them, they hit hard and fast, aiming to break the Imperium’s defences.
They use a mix of infantry, tanks, and daemon engines, and they’re not above making pacts with any of the Chaos Gods. That flexibility makes them unpredictable and deadly.
| Aspect | Detail |
|---|---|
| Leader | Ezekyle Abaddon |
| Affiliation | Chaos Undivided |
| Colours | Black, gold, silver |
| Battle Cry | “We are returned! Death to the False Emperor!” |
| Main Base | Pyris Nebula (Eye of Terror) |
Why they matter
The Black Legion is the face of Chaos in the 41st Millennium. They’re the ones who’ve come closest to toppling the Imperium, and they keep coming back. If you’re into Chaos Space Marines, you’re probably into the Black Legion.
They also represent the idea that Chaos isn’t just mindless destruction. Abaddon has a plan, and the Black Legion is his tool to finish what Horus started.
Key facts
- The Black Legion is the largest Chaos Space Marine warband, founded by Abaddon after the Horus Heresy.
- They’re based in the Pyris Nebula near the Eye of Terror and have no homeworld.
- Abaddon leads them as the Warmaster of Chaos, champion of the Ruinous Powers.
- They fight the Long War to destroy the Imperium and the False Emperor.
- The Legion unites from scattered warbands to launch Black Crusades.
FAQ
Who leads the Black Legion?
Ezekyle Abaddon, also known as Abaddon the Despoiler. He founded the Legion after the Horus Heresy and still commands it.
What’s the difference between the Black Legion and the Sons of Horus?
The Black Legion was formed from the remnants of the Sons of Horus, but it’s more than a rebrand. Abaddon created a new army that recruits from many different Traitor Legions, more than Horus’s old followers.
What are the Black Crusades?
They’re massive military campaigns launched by Abaddon against the Imperium. There have been thirteen so far, each one a major threat to the galaxy.