Evil pantheon
The evil pantheon contains the gods of corruption. The cause fire between the gods have led to a sustainable peace but there is very little love lost between them and the other pantheons. Though some consider them collectively the strongest pantheon it has been many millennia since there has been one strong enough to unite them under one banner.
Neutral Evil
Tharizdun, The Dark Lord [formerly]
Tharizdun is well known as the god of nihilism, madness, destruction, darkness, oathbreakers, fatalism, determinism, atrophy, and corruption. The self-proclaimed Dark Lord led his pantheon against creation in a crusade to resurrect the great old ones but was halted by a betrayal within his ranks. While he is imprisoned, a fierce blood war is being fought to determine who shall be named the next Dark Lord. According to the prophecy of Ragnarok, the dark lord's son would herald the end times, and since Tharizdun has no known surviving sons, everyone is waiting with bated breath for the next dark lord to arise.
Social Evil
Takhisis Tiamat, The Obsidian Queen
Takhisis is the goddess of pride, avarice, lust, evil dragons, narcissism, entitlement, and power. She was once Bahamut's first wife and the progenitor of most metallic, chromatic, and gemstone dragons. After she betrayed Bahamut to serve under Tharizdun, she was called Tiamat, which is ancient draconic for 'of many colors.'
Rebel Evil
Morkesh, The Serpent of Magic
Morkesh is the god of magic for evil means, tieflings, creativity, hags, forbidden knowledge, greed, undeath, and ambition. He is the younger brother to Oghma and Mystra and is typically depicted as a massive serpent with an alligator face and numerous eyes along his body. He is said to have known secrets of dark magic that even his siblings don't know of. It is speculated that he is the one who taught the whispered one magic, but few, if any, know this for certain.
Lawful Evil
Asmodeus, The Lord of the Nine
Asmodeus is the god of tyranny, devils, contracts, torment, politics, and knowledge. He was once a deva of the highest esteem who plotted with the dark lord long before the dawn war and served as his right hand once it came. He claims that in all of his existence, he has only ever once told a lie.
Chaotic Evil
Lolth, The Spider Queen
Lolth is the goddess of poison, desire, ad hominem, misinformation, consumption, sadism, deception, anarchy, rebellion, and sedition. She is believed to have existed as a spirit before becoming a true god. She is confirmed to have had powerful children with Corellon and is speculated to have children with at least one other.
Neutral Evil
Torog, The Underlord
Torog is the god of torture, slavery, imprisonment, psionics, evil dwarves, derro, mind flayers, and the Underdark. He is depicted as a bulbous worm with three hands and a face with a crooked crown. He is believed to have originally been a monstrosity created by Tharizdun for the war and was ascended as part of the divine accord.
Neutral Impure
Shar, The Shadow Princess
Shar is the goddess of shadow, secrets, concealment, forgetfulness, nightmares, betrayal, seduction, loss, concealed hatred, and dark desires. When Tharizdun returned from pursuing the great old ones, he had a great illness that came over him, culminating in a massive headache. He then proceeded to split his head open, and out came a young child he named Hela. Hela would become shield sisters with Sehanine Moonbow but would betray her to her father, taking up the name Shar. As it currently stands, she is the only remaining heir to Tharizdun's legacy. However, she lacks the influence to galvanize the dark pantheon under her and flits from alliance to alliance with the planes watching for her, fearing where she will cast her support.
Social Impure
Zehir, The Venomous
Zehir is the goddess of venom, assassins, subjugation, retribution, despair, mercilessness, cultural elevation{ex. Castes, xenophobia, etc}, restrictive tradition, institutions, and detachment. She is often depicted as a serpentine woman and, in later years, became consort to Bane to ally against Grumsh and Iuz.
Rebel Impure
Iuz, The Shackled
Iuz is the god of stealing, murder, deceit, pain, and oppression. At the end of the dawn war, his seat was initially meant to go to his father, the demon prince Graz'zt, but when he turned down the offer, Iuz was offered the position. Rumors abound as to why he did it with the most prominent being that he is still under the thumb of his father. He is confined to Tartarus as a petty tyrant who has made an unstable alliance with Grumsh against Bane and Zehir.
Lawful Impure
Bane, The Strife King
Bane is the god of conquest, strategic war, dark paladins, industry, and despotism. Before joining the dark lord's ranks, he was previously a god of justice. He is at odds with Erathus for influencing the first goblin king, Maglubiyet, to his side, and he has been fiercely rivaled with Grumsh from their time under the dark lord. Though his followers deny it, it is believed that without his alliance with Zehir, he would be out of the race for the black iron throne.
Chaotic Impure
Gruumsh, The Ruiner
Grumsh is the god of rage, savagery, destruction, famine, sadism, orcs, ogres, primal giants, lycanthropes, and disease. He attained his divinity after slaying his predecessor, Talos. Then, when Tharizdun began raising his legions, Grumsh was among the first to join. He has an unfathomable hatred for the world that he believes spurned him. From Corellion Lethon, who took his right eye to Erathus who imprisoned him for breaking his oath to Talos. Even the dark pantheon he doesn't particularly like. He merely tolerates them for allowing him to live as he pleases. Even then, he still wants to kill a great many of them and only really considers Iuz to be a friend.