- "What is finer than death in battle to defend the future of mankind?"
- — Anonymous Grief Bringer Battle-Brother
- Valhall II Persecution (Unknown Date.M41) - The Grief Bringers were led by the Inquisitor Torq Serpilian to the world of Valhall II, where they suffered heavy losses fighting against Enslavers. Afterwards they accompanied the Inquisitor to another world, Delta Khomeini V, to track down a powerful young rogue psyker; en route, Serpilian requisitioned the services of a band of Ogryns and a Squat engineer from the Imperial Guard, in order to bolster the Space Marines' depleted numbers.
The Battle-Brothers of the Grief Bringers often exhibit stoic bravery and the willingness to sacrifice themselves in order to preserve the lives of their fellow Astartes, such as rushing headlong into an enemy in a suicidal charge while carrying Melta Bombs. Though they are dutiful in the responsibility granted to them by the High Lords of Terra as the Imperium's protectors and they treat its citizens with the utmost respect, they are not above laying waste to an entire system in order to achieve their objectives, even in the face of insurmountable odds.
The Power Armour colour scheme of the Grief Bringers is described as "principally a sickly pea-green, with engrailed chevrons of headachey purple." Senior Battle-Brothers in command positions wear a lavender chest guard with a purple Aquila on its chest and dark pea-green with engrailed purple chevrons alternating in a zig-zag pattern. Chaplains are known to wear green chasubles with purple apron and a filigreed Chapter insignia. They also often wear mauve stoles embroidered with aliens in torment.
The Grief Bringers' Chapter badge is a large white skull with a dagger impaled through it.
- Deathwing (Anthology), "Warped Stars" by Ian Watson