Athar Also known as "the Defiers" or "the Lost", they deny not only the gods' right to pass judgment over mortals, but their very divinity. They claim that the gods (whom they call "powers") are powerful but have limits and do not deserve worship. Instead, Athar priests channel divine power from what they call the "Great Unknown", or what they believe to be the true divine force behind everything. Their headquarters in Sigil is the
Shattered Temple, the former temple of the dead god
Aoskar. Following the faction war, and banned from Sigil, they moved their headquarters to the base of the infinite spire where divine magic does not function in protection of the many gods they have offended. The Athar are broadly derived from real-world
atheists,
agnostics, and
Deists.
Believers of the Source Known as "Godsmen" they believe that each life is a test, and that every person has the potential to become a god. Their headquarters is the
Great Foundry, symbolizing their belief that the multiverse constantly forges and refines all beings. Shares many parallels with
Hindu,
Buddhism, and most sects of
Mormonism. However, the ultimate goal is not
Nirvana but
apotheosis.
Bleak Cabal "Bleakers" or "Madmen" deny that any belief system has any merit; as they see it, the universe has physical rules, but no metaphysical or philosophical ones, therefore any meaning in life must come from within. Their headquarters is the
insane asylum of Sigil, called the
Gatehouse. They are derived from real-life
existentialists and the philosophy of
Friedrich Nietzsche.
Doomguard The "Sinkers" believe in the sanctity and inevitability of entropy, particularly the inevitable destruction of all things. The core of their belief is that everything ends. Their headquarters is Sigil's
Armory, where they forge weapons as tools of destruction.
Dustmen Also known as "the Dead", they believe that the life people live in now is a false state of existence, that there is a state of "True Death" which can only be accomplished by denying one's emotions, physical wants and needs (a conception similar to
eternal oblivion, but also conceivably to
Nirvana). Their headquarters is the
Mortuary, where Sigil's dead are interred or cremated. Their philosophy is closely related to that of
Arthur Schopenhauer, along with some shared similarities with Buddhism,
Stoicism and
acosmism.
Fated "Takers" or "The Heartless" believe that those with power and ability have the right to own what they control and to take what they can from those who are unable to keep it, and that it is their right to exploit any situation to their advantage, regardless of how it affects anyone else (a position akin to "
might makes right", and
achievement through work). Their headquarters is the
Hall of Records, where they serve as the tax collectors of Sigil. They are derived from real-life
Social Darwinists and the philosophies of
Max Stirner and
Ayn Rand.
Fraternity of Order These "Guvners" believe that knowledge is power; they learn and exploit both the natural laws of the universe and the laws of society. Their headquarters is the
City Court, where they serve as judges and legal advocates. They recall the
Sophists of Classical Athens.
Free League As "Indeps", they reject the other factions and their bureaucratic, hierarchical dogmatism and do not consider themselves a faction at all. For this reason, they don't have a factol or an official headquarters, though Sigil's
Great Bazaar serves as an unofficial one. They believe in individual freedom as the highest good.
Harmonium "Hardheads" believe that peace and stability can only be established under one rule — theirs. The planar faction known as the Harmonium is actually just a small part of a much larger political entity which rules over the entirety of the Prime Material world of Ortho. In Sigil, they serve as the city's police force, and their headquarters is the
City Barracks. They are related to present day
authoritarianism. They take offense to the term "Hardhead".
Mercykillers "The Red Death" believe in justice and
retribution at the expense of all else. Their name does not come from "killing out of mercy," but rather "killing mercy." Their credo that mercy is for the weak, and the merciful should be punished. Their headquarters is Sigil's
Prison, where they carry out the sentences of convicted criminals.
Revolutionary League "
Anarchists" who believe that social order and man-made laws are inherently corrupt and must be destroyed—though none of their members can agree on what, if anything, should replace them. Like the Indeps, they have no headquarters and gather in many safe houses and secret meeting places.
Sign of One "Signers" believe that everyone is the center of their own reality, and that reality can be reshaped by the power of imagination. Their headquarters is the
Hall of Speakers, which houses Sigil's legislature. Some of them are
solipsists, though most are not so extreme.
Society of Sensation "Sensates" believe that accumulating
experiential knowledge through the senses is the only way to achieve enlightenment. Their headquarters is the
Civic Festhall, which features an endless series of entertainments and a library of magically stored experiences. They are reminiscent of ancient
Epicurianism (if not
hedonism more generally), as well as the more modern
empiricism.
Transcendent Order The "Ciphers" believe that by tapping into the 'cadence' of the planes and acting through pure instinct they can achieve a higher state of being. Their headquarters is the
Great Gymnasium, where members can train to improve their bodies and minds. Their philosophy could be considered similar to
Taoism and
Zen Buddhism.
Xaositects "Chaosmen" who believe that the only truth is revealed in chaos. The Xaositects have been quite accurately described as being "totally off their rockers, every one of 'em." Their headquarters is the
Hive, the most disorganized part of the Sigil ward of the same name. Compare with real life
discordianism. == After the Faction War ==