The Plague of Unbelief is the name given to the heretical empire carved out by Cardinal Bucharis of Gathalamor during the chaotic aftermath of the Age of Apostasy. It matters because it shows how quickly faith can be twisted into tyranny, and it’s one of the clearest examples of a full-blown Imperial civil war sparked by a single ambitious priest.
What was the Plague of Unbelief?
It was a rebellion and breakaway empire led by Bucharis, the apostate Cardinal of Gathalamor. He declared the Ecclesiarchy corrupt and himself the mouth of the Emperor, then conquered dozens of worlds while hiding news of Sebastian Thor’s reforms from his people.
The name comes from the scale of his heresy. Bucharis didn’t just rebel; he built a parallel church and state, and his followers genuinely believed his lies. That’s what made it a plague rather than a simple war.
How Bucharis built his empire
Gathalamor was poor, and Bucharis resented his richer peers. He enslaved his own population to fund a giant temple, then used thugs to seize the nearby mining world of Rhanda for its resources.
On Rhanda he recruited Admiral Sehalla of the Imperial Navy and Colonel Gasto of the Rigellian XXV Imperial Guard. With ships and real soldiers behind him, he conquered fifty planets in seven years.
Warp storms hid the region from the wider Imperium. Bucharis controlled the news, told his people the Ecclesiarchy had fallen to traitors, and positioned himself as the head of the Ministorum in his own domain.
- Leader: Cardinal Bucharis of Gathalamor
- Key allies: Admiral Sehalla, Colonel Gasto
- Worlds conquered: around fifty, in seven years
- Hidden from the Imperium by vast Warp storms
How it ended
Bucharis’s empire eventually crumbled, partly through the efforts of Confessor Dolan and others who resisted him. The details of the campaign are grim, but the outcome was clear: the Imperium reclaimed the region and Bucharis’s false church fell.
The episode is remembered as part of the Age of Apostasy, even though it happened decades after Goge Vandire’s death and Thor’s rise. It’s a reminder that the Age’s wounds didn’t heal overnight.
The second Plague of Unbelief
Centuries later, another event with the same name broke out in Segmentum Obscurus shortly before the Thirteenth Black Crusade. Sources describe it as a spreading sickness that afflicted those without utter belief in the Emperor.
That incident is likely a manifestation of the Zombie Plague, not a repeat of Bucharis’s rebellion. The shared name seems to come from the same idea: faithlessness as a weakness that chaos can exploit.
Key facts
- The Plague of Unbelief was a heretical empire led by Cardinal Bucharis of Gathalamor.
- It’s part of the Age of Apostasy, though it happened decades after Vandire’s death.
- Bucharis conquered around fifty worlds in seven years with help from Admiral Sehalla and Colonel Gasto.
- A second, unrelated Plague of Unbelief struck Segmentum Obscurus before the Thirteenth Black Crusade.
- That later outbreak was likely the Zombie Plague, affecting those lacking faith in the Emperor.
FAQ
Who was Bucharis?
He was the apostate Cardinal of Gathalamor who led the Plague of Unbelief. He declared himself the mouth of the Emperor and built a breakaway empire during the Age of Apostasy.
When did the Plague of Unbelief happen?
It took place several decades after Goge Vandire’s death and Sebastian Thor’s ascension to Ecclesiarch, so it’s considered part of the Age of Apostasy but not the same event.
Is the second Plague of Unbelief the same thing?
No. The later outbreak in Segmentum Obscurus was a different event, likely a form of the Zombie Plague, and it happened shortly before the Thirteenth Black Crusade.