Hellknights: First appearing in the paladin description in the Rise of the Runelords Players Guide, Hellknights are an order of law enforcers interested not so much in the social goodliness and charity of typical paladins but in the foundation and stringent maintenance of order. In their iron-handed exaction of law—specifically, the laws of their various orders and their home country of Cheliax—Hellknights emulate the most organized and effective armies in all the planes: the legions of Hell. They are not concerned with morality, they are not concerned with methods, they are concerned with results. If people cannot be trusted to obey the law out of their own senses of civility and social righteousness, then they will be treated like beasts, learning to obey out of fear of a master's stern hand.
Regardless of their severity, Hellknights are not an evil group. Although there are doubtlessly numerous evil members—particularly among the upper echelons of power—the majority of the orders are lawful neutral, with lawful neutral, lawful evil, and lawful good members filling the ranks of each. The study of Hell’s tenants and even the summoning of devils are tools meant to intimidate and strengthen the individual resolve of the orders’ members. Hellknights are taught to replace emotion with steely discipline. They train with summoned devils, the signifiers of their orders coaxing the ingenuity of diabolical tactics from infernal tongues, while the rank and file members spar against the very denizens of Hell--making nearly any future conflict a far less daunting prospect. They learn that sacrifices must often be made for the greater good, obey draconian regimens of military conduct, commit to encyclopedic memorization of the laws of their orders and local governing bodies, and undergo constant drills to train their bodies and minds.
While Hellknights are widely feared and respected, the common Hellknight joins out of a sense of duty and wish to be a part of something greater, seeing a world ruled by just laws and free of rampaging beasts and cheating thieves as a future well worth striving toward... even at the sacrifice of a little freedom. Countries and rulers sometimes invite Hellknights into their lands, leaving the dirty business of harsh law enforcement to an already loathed third party, although, convincing Hellknights to leave once they've been welcomed sometimes proves problematic for more freedom-loving societies.
Every order of Hellknights has a distinctive, intimidating style of full plate armor that distinguishes them from the others. All Hellknights wear the armor of their order as a mater of pride and are rarely seen without. The Order of the Nail’s armor has thus far been the only one depicted (featuring a horned helm and demon face breastplate).
There are numerous orders of Hellknights. The majority have holdings in Cheliax, but a few have expanded or moved to operate outside the country, most typically in regions formerly held by the empire. The known orders of Hellknights are: The Order of the Rack, the Order of the Scourge, the Order of the Nail, and the Order of the God Claw, although there are several more. The leader of a hellknight order is known as the Lictor. Beneath him are the order's Master of Blades (field commander) and Paravicar (leader of the order's arcane/religious forces). Beneath them, paralictors (Hellknight officers), signifiers (Hellknight spellcasters), rank and file Hellknights, and armigers (Hellknights in training) flesh out the ranks. The best detailed group of Hellknights, Varisia's Order of the Nail, is detailed in Pathfinder #2 and further in the Guide to Korvosa, with appearances in Pathfinder #6's Pathfinder's Journal (which nails how hardcore they can be) and throughout the Curse of the Crimson Throne Adventure Path.