The Guardians of the Covenant are a Loyalist Space Marine chapter descended from the Dark Angels. They’re one of the Unforgiven, and they’ve built a reputation as warrior-scholars who treat war like a religious calling.
Who they are
Nobody knows exactly when the Guardians of the Covenant were founded. What’s certain is their gene-seed traces back to the Dark Angels Legion, which puts them among the Unforgiven, the network of successor chapters that answers to the Dark Angels’ Inner Circle.
They’re based on Mortikah VII, a world near the western edge of the Imperium. Their fortress-monastery is carved into a mountain and built to look like a vast Imperial cathedral, with a spire that punches through the cloud layer.
The most bookish chapter in the Imperium
The Guardians are famously monastic, even by Space Marine standards. They spend their downtime studying the teachings of the Emperor and their primarch, Lion El’Jonson, and they decorate their armour, vehicles, and wargear with illuminated passages copied from sacred Adeptus Astartes texts.
That devotion has a harsher edge too. Squad Vyston of the 3rd Company, known across the Unforgiven as the tome burners or pyroclasts, have a habit of combing through allied archives after a battle and torching any volume they judge heretical.
Their Inner Circle goes by the name the Secret Order.
Where they’ve fought
Most of their campaigns have been in the Segmentum Pacificus, especially crusades pushing into the Halo Stars and the Veiled Region. They earned particular honour during a Lelith incursion, when they saved an entire sub-sector from xenos conquest.
More recently they’ve turned up at some of the biggest flashpoints in the setting, including the Siege of the Fenris System, the Battle of Idolatros during the Arks of Omen campaign, and the Nachmund Rift War, where they helped lead the defence of Sangua Terra.
- M41: The Forlex Rescue
- 999.M41: Siege of the Fenris System
- M42: Massacre at Darkmor
- M42: Battle of Idolatros (Arks of Omen)
- M42: Nachmund Rift War, defence of Sangua Terra
Heraldry and notable members
They wear gunmetal grey power armour with black pauldrons and a black aquila, and some brothers wear dark red robes over it. Their chapter symbol is a pair of white crossed swords on a black field.
Known figures include Master Himmaeus, Master Arven Nahrdeth of the 3rd Company, Lieutenant Duriel Haethan, Interrogator-Chaplain Soreon, and Brother Kadroel, who was seconded to the Deathwatch.
| Element | Detail |
|---|---|
| Founding chapter | Dark Angels |
| Founding | Unknown |
| Homeworld | Mortikah VII |
| Colours | Gunmetal grey, black pauldrons and aquila, dark red robes |
| Symbol | White crossed swords on black |
| Inner Circle | The Secret Order |
Key facts
- The Guardians of the Covenant are a Dark Angels successor chapter of unknown founding.
- They’re based on Mortikah VII and operate mainly in the Segmentum Pacificus.
- Their armour is gunmetal grey with black pauldrons and aquila, often worn with dark red robes.
- They’re extremely monastic and cover their wargear in illuminated religious texts.
- Their Inner Circle is called the Secret Order.
- They fought in the Siege of the Fenris System and helped defend Sangua Terra in the Nachmund Rift War.
FAQ
Are the Guardians of the Covenant a Dark Angels successor?
Yes. They’re a successor chapter of the Dark Angels, which makes them part of the Unforgiven. Their exact founding date isn’t recorded.
What’s their homeworld?
Mortikah VII, near the western rim of the Imperium. Their fortress-monastery is a mountain-top cathedral with a spire that pierces the clouds.
Why are they called tome burners?
That nickname belongs to Squad Vyston of the 3rd Company. After battles they search allied archives and burn any texts they consider heretical.