Tharizdun

The Dark God, The Ender, He of Eternal Darkness, the Ebon God, the Black Sun, He Who Waits, the Wrongly Held, the Anathema, the Father of Elder Evils, the Author of Wickedness, the Eater of Worlds, the Despised, the Undoer, the Chained God

Tharizdun is the god of Eternal Darkness, Decay, Entropy, Malign Knowledge, Insanity, and Cold. He takes the form of a pitch-black, roiling, amorphous form. As the Dark God, he is described as an incorporeal wraithform, black and faceless.
He was imprisoned ages ago by a coalition of deities to prevent the destruction of existence itself. Although imprisoned, Tharizdun still has a degree of his original multiverse-threatening power, and still wishes to destroy the entire universe. Should he ever escape from his prison, it is thought that even the most evil of deities work with their good counterparts to return Tharizdun to his prison.
Tharizdun's temples (often in the shape of black ziggurats) are usually hidden, due to necessity.
Some say that Tharizdun originated in the Far Realm or in a previous universe. Tharizdun was imprisoned eons ago by the forebears of those beings known as the Great Powers, although it is said that Pelor was also involved. It is said that both good and evil deities worked together to ensure his imprisonment. As the Dark God, Tharizdun is credited with the corruption of the Seelie Court. 
Tharizdun was imprisoned long ago, but his prison may weaken at times, allowing his influence to creep out into the worlds beyond.

Divine Domains

Chaos, Destruction, Dream, Evil, Force, Knowledge, Madness, Runes.

Divine Symbols & Sigils

Tharizdun's holy symbols are a dark sprial rune and a two-tiered inverted ziggurat known as an obex. His holy number is 333.

Tenets of Faith

Tharizdun's doctrine is to destroy all and everything encountered (himself included), as he puts it: The very threads of existence must be torn asunder, then burned, then the ashes scattered, until all is nothing and no one exists to remember existence.
Like his lay worshippers, many of Tharizdun's priests are mad. Those who are not mad believe (falsely) that they will reap great rewards and privileges for their aid in freeing him. All of his clerics are extremely secretive and trust only fellow cultists. They lead foul rituals, including human sacrifice, and search ancient sites for clues to freeing their deity. Due to Tharizdun's imprisonment, his priests must remain in contact with a site or object holding some of the Dark God's power in order to use their magic. Their favoured weapon is the dagger.

Alignment

Neutral Evil

Gender

Other

Tharizdun's Symbol by Unknown