Warhammer 40k - Grey Knights
The Grey Knights / Daemon Hunters are an Inquisitorial chamber militant group comprised of Warhammer 40k Adeptus Astartes / Space Marines, and distinguish themselves with weapons and rules unique to them.
The existence and mission of the Grey Knights is an aggressively guarded secret, known to only a handful of Inquisitors and specially selected Imperial agents. They are the vanguard of humanity's greatest warriors against the forces of Chaos.
The drafting and training of potential candidates is steeped in secrecy, however, we do know that they are implanted with geneseed crafted by the Emperor himself designed to bolster psychic potential whilst maintaining strict defences against corruption in the form of faith and sheer willpower.
A Grey Knight army has a relatively low model count as an elite force, but each squad is a powerful force in it’s own right. They utilise Strike squads which can be equipped with incredible teleporting technology to strike just where they are needed. Heavy weapons squads like the purifiers that can wield powerful anti-psyker weaponry which can teleport down in the best position to light up an enemy unit.
Their Terminator squads are some of the most elite and potent in all Astartes chapters, each a potent psycher and veteran of countless battles, wielding immense force weaponry designed to amplify their sheer will power and psychic might into the blade to destroy the denizens of the warp.
Brotherhood of Psykers is a powerful rule for them, which helps them cast their own powerful psychic powers, and disrupt the enemy’s own. In addition to deadly force weapons and unique ammunition, Grey Knights are the single most powerful anti-daemon forces in the Imperium.