The Dark Gods of Balleron

Though it should be noted that Balleron worship doesn't typically maintain the moralistic viewpoint of some faiths, adherence to duty and the ancestors alongside obeying civil authority is important. Some deities seek to subvert loyal citizens and must be appeased, while others control forces generally considered inimical to humanity. Most of the deities here have temples and priests but observe few holidays, instead received supplication and appeasement from loyal citizens from time to time, and the priests themselves are usually feared and avoided but almost never harassed. To work ill upon the priest of any god is taboo in Republic society, and legends abound of the fates visited upon those who vexed the dark gods' chosen servants.
For the sake of symmetry, sages have position six of the dark gods together as a sort of inversion of the popular pantheon, though their power and influence aren't tied to this arbitrary assignment. (Dear readers, please note that the gods of this world don't measure 'power' in an quantifiable term to lord over other deities, but rather consider their influence on the world and its societies to be an indication of this metric.)
Yargic - The Judge, Embodied Law, The Obsidian Executioner
Yargic is easily the most popular of the 'dark' gods and alone among these deities has a holiday in his honor. The affair is always violent, with games held in his honor but filled entirely with criminals, most of whom will be dead by the day's end. Yargic is known to be a ruthless executive of laws, concerned with the letter of said laws and not the spirit. In a broader sense he represents the immutable laws of the very world and universe, and he reminds humanity that the universe is utterly indifferent to their existence. That his purview extends to assigning souls to different fates after death is no accident; he is unmoved by pleas or silver tongues, and ensures that all proceed to the fate they deserve. His priests are often solemn, and the more adventurous among them serve as bounty hunters and roaming judges, bearing the symbol of Yargic: a book bound in black leather with gold lettering. Priests record the execution of their duties with precision, and mete out the punishments prescribed for offenders. Yargic's favored animal is the crocodile, and his priests dress in blacks and greys. Some would-be rulers admire him and seek to attain rulership through what they think are just means, ironically making Yargic a popular figure among revolutionaries.
The Maw - Fury Incarnate, Furious Visage, The Scarlet Fangs
A goddess of war and a god of noble defense exist, but the Maw is neither, being a creature of pure violence. This god is whispered to manifest on the field of battle as a spectre, driving men and women to acts of unspeakable cruelty; much of the rape, torture, and wanton slaughter perpetuated by armies or warriors is blamed on this being. His few priests insist that these impulses are embedded within us, and that the Maw is a reflection or even collection of these horrific impulses, but their message falls upon deaf ears. This is partially due to the unspeakable acts those same priests commit upon their infrequent sacrifices; people who commit these atrocities often find themselves at the mercy of the Violent God's own worshippers, and their fate matches their crimes.
Phillip - The Reveler, The Dark Goat, The Everful Chalice
Phillip is the least feared of the Dark Gods, yet also the most insidious. Seen as the patron of parties, revelry, and general chaos, it is the sweet whispers of Phillip and the seduction to cast off social norms that many in the Republic see as undermining social order. Most brothels and taverns in the Republic have a small shrine dedicated to this god, and most are permitted to operate without much interference from the government, since many include an acolyte or priest dedicated to this deity and so earn that protection of all priests here, and also because these institutions serve as a means of containment for humanity's base urges. Full moons still see their share of drunken orgies in the woods however.
Fisilti - The Whisper, The Poisoned Secret, The Slender Blade
While Phillip may draw the most attention from the common folk, Fisilti's domain concerns the established elite in the Republic. She is the goddess of secrets and subterfuge, blackmail, and assassination, though this last is something her priests will deny. Every successful courtier has a shrine to Fisilti somewhere discreet and burns offerings of flowers or honey before embarking on some scheme. When assassinations are called for, and they are rather often in the Republic, decorum expects that they'll be neat and swift. Poison is the preferred means of carrying this out, with other methods used as needed; anything that draws blood is used only as a last resort. Whether this custom arose out of deference to the goddess or social propriety is uncertain at this point, but that is how the Republic is. While Fisilti's followers once maintained an assassin's guild that existed openly, the protection against clergy failed them when nobles began hiring elven assassins who didn't fear Fisilti's wrath to cull them. The resulting Nightshade War thinned Fisilti's church and encouraged the assassins working for her to go underground; they do not accept direct commissions, but those who support the church generously may find their opponents are dying mysteriously.
Tsovinar - Anger of the Sea, The Eternal Storm, Drinker of Souls
Balleron legend has it that the founders of the city tricked the sea goddess long ago into letting them reclaim the land upon which the city is built. Sailors believe they've been paying the price ever since. Tsovinar is seen as an embodiment of death, requiring placation from any in the Republic who sail across her surface or fly the skies above it. It is said that even though one of the gentler gods produces rains from the sky to fertilize the fields, Tsovinar can force the rain to fall. She has never forgiven the Bellarons, and the families of sailors often leave offerings in saltmarshes for her. It is believed that those who die at sea are taken by Tsovinar to her own hall, regardless of how well they performed their duties in life, and sailors enjoy wildly speculating about what that might actually mean. Tsovinar's priesthood is no help as they're nearly nonexistent; as a force of nature, she attracts little organized worship, and what few do worship her tend to be madmen and hermits.
Kuzgun - The Dark Moon, Stolen Mark, The Bloodied Sickle
All magic is not equal. So-called 'low' magic is the province of rural wise women and strange men, in tune with the world's natural prana and bending it to their will by understanding it. Wizardry requires a Mark and taps into the abundant energy streaming from the Girdle of the Gods, high in the heavens, and forces its students to memorize difficult sigils and exercises to steel their bodies for channeling such power. Magic can also be stolen... Marks may be granted to those of sufficient will, but anyone who stumbles across one can bind it to themselves with the help of dark rituals and the blood of others. Of all the beings who grant this knowledge (or even the magical 'juice' needed to complete it in the first place), Kuzgun is the most prolific, practically seeking out those who crave power regardless of the cost and granting it to expand her influence and worship. Her priests invariably undergo this process to bind themselves to her, which has caused problems in some cases when acolytes have been a little too proactive in acquiring Marks from a wizard, and they'll gladly instruct anyone in these more sinister magics and rituals. The price is always the same; the power grows beyond the ability of a potential priest to control, and Kuzgun's church will only help for increasing control over the supplicant's life. Blood magic, necromancy, and all manner of heinous sorcery is the especial favorite of this goddess, and more so even that Fisilti's assassins, the clergy of this church are feared and come closest to encouraging people to break the taboo against harming priests.