The Blessed Wormlings are a Genestealer Cult whose cultists feed only on the beetles and squirming annelids that burrow through the loam of the Cemetery World of Masuchi Parr. A sombre brethren who are dark of mood and aspect, they believe that the verminous insects that prey upon the dead inherit the strength of all creatures once they pass into the earth.
They preach that, by embracing the ways of the most lowly creatures of creation, they will find a humility that brings them closer to the god they name the "Star Emperor." In truth, the deity they refer to is not the Master of Mankind, but an anthropomorphic personification of the Great Devourer -- the Tyranid species that will one day consume them all.
In the late 41st Millennium, a seven-man Deathwatch Kill-team was deployed to Masuchi Parr to investigate reports of the existence of the cult. When they discovered that the threat was greater than first feared, the Kill-team fought heroically to reach the planet's spaceport and escape to bring word of the menace to the wider Imperium.
Yet their numbers proved too few and, though the Astartes heaped the corridors with xenophile corpses, the Deathwatch Marines were eventually overrun. Theirs was but one story of tragic loss for the servants of the Emperor during this time, when the Deathwatch found themselves stretched to their limits and beyond by the growing xenos threats to the Imperium.
- Codex Adeptus Astartes - Deathwatch (8th Edition), pg. 25, "Contact Lost"
- Codex: Genestealers (8th Edition), pg. 33
- Codex: Genestealers (7th Edition), pg. 51