Warhammer 40k: Codex - Grey Knights

The Grey Knights are the most mysterious of the Emperor's servants, who are fluent in both blades and otherworldly abilities. The warriors of this unique order are chained in consecrated armor, symbolizing their steadfastness and true faith. Even among the other champions of the Imperium, they stand out for their resilience, because their worst enemies are the nightmarish spawn of the warp, the Daemons of Chaos. The Grey Knight Brotherhoods use the power of the Immaterium to hit opponents with energy discharges or teleport behind their backs, as well as displaying incredible firepower when it comes to gunfighting. On the side of the Gray Knights are sharpshooters, consecrated battle tanks, flying equipment and huge combat suits. It's time to banish the demons back to where they came from!

The mysterious 666th Order of the Space Marines (Space Marines) in many ways surpasses even the other Adeptus Astartes. Each Gray Knight wields destructive warp energy, and is also perfectly skilled with swords, halberds, and war hammers. Although their numbers are small, these warriors of faith are some of the best subjects of the Emperor, who are always ready to repel insidious demons.