Order of Infinity
Capsule Historical Overview
First seen in the Worldburner fic The Order of Infinity, the Order is a fanatical cult from a divergent-reality Earth. Possessed of tens or even hundreds of millions of followers from that Earth, and wielding including large military forces and a sizable space-fleet of distinctive lozenge-shaped vessels (such as the now-destroyed Resurgence), the Order claims that the Daria Multiverse and all it contains - including themselves - is a deviation from That Which is Real and must be wiped from existence.
A long time ago, the Order split apart in a civil war; the renegades would go on to become the Foundation, claiming a divine instruction to protect the "deviant" multiverse from omnicide. The war went against the Order after the appearance of the first Worldhopper, wiping out their army and scattering them.
In the 'present' (sort of), under the leadership of The Padre (an alternate-reality version of Timothy O'Neill), the Order has regrouped around Judith, an alternate Daria Morgendorffer with the power to obliterate universes: the Order considers her their best chance at wiping out the deviations. Judith has given them access to annihilation spheres, energy spheres that destroy realities. The Order of Infinity have become Judith's main minions, attacking countless worlds.
The most visible members of the Order are the Purifiers, who are best described as the 'warrior-priests of the Order, and hold positions of authority within. Purifiers will be found action on solo missions, leading Order troops into battle, or acting in positions of oversight and discipline over members of the Order in general.
Purifiers are easily recognizable by their uniquely distinctive appearance. Each Purifier is garbed in a form-obscuring golden cloak, which can become invulnerable to attack and provide the Purifier a split-second advantage during melee combat. Thankfully, these attributes come with several weaknesses: their cloaks are invulnerable but the gaps in their hoods are unshielded; if surprised and/or attacked, their pacification charm collapses; and if something that is perceived as too deviant arrives without warning (i.e. if they're in one alternate reality and run into a traveler from a second alternate), it can cause the Order member nausea and confusion.
The Purifiers are also known to wear robes (of the same color) which possess the same qualities against attack, as well as 'hammer-space' capabilities similar to Judith's cloak that allow for vast storage space. (In the LLH 'Mini' How To Avoid A Trap, The Padre is shown drawing his scythe from his robes; he is also shown placing cinderblock-sized chunks of gold into the cape.)
Weapons and Equipment
The primary weapon of the Purifiers is a scythe which can appear instantly in the Purifier's hand (or be drawn from within the Purifier's robes), slice through almost anything (including through the shielding of a Ringbearer (if said Ringbearer is not actively reinforcing the shield), project invisible 'blades' of pure sharpness at targets, as well as energy pulses from the top of the scythe's shaft. Alchemical contact lenses allow them to identify specific deviants (although they also possess hand-held scanners that also allow this function, and provide reality-specific information on subjects, including probable historical data of that subject's life in that specific reality).
In some instances, they use a 'charm' that pacifies a whole world into accepting the need for their destruction. They can teleport into almost any reality and location within it, seemingly at will. (These abilities have been seemingly lost to the Order in general, as the Padre does not demonstrate them while in Highland, and his activities suggest that he does not have them (or any mental-manipulation, teleportation, or dimensional-transfer equipment available to him.)
Thankfully, these attributes come with several weaknesses: their cloaks are invulnerable but the gaps in their hoods are unshielded; if surprised and/or attacked, their pacification charm collapses; and if something that's too deviant arrives without warning (i.e. if they're in one alternate reality and run into a traveler from a second alternate), it can cause them nausea and confusion.