Boethiah is a daedric prince whose sphere is that of deceit, conspiracy, secret plots, assassination, treason, and unlawful overthrow of authority. Boethiah is most often depicted as male but occasionally is mentioned as female. He is depicted as a great caped warrior often in a stoic pose and has a love for competition and battle.
He is said to be the original god-ancestor of the dunmer or dark elves. There cultural 'advances', philosophy, magic, architecture, and the like are attributed to him. Boethiah is said to have corrupted Trinimac’s body and spirit when he devoured him, causing his people to change into orcs and Trinimac to reemerge as Malacath.
His realm is called Attribution’s Share or Snake Mount. Twisted towers and immense maze gardens fill the realm and is ruled by laws of labyrinthine policy and betrayals. Boethiah holds the Tournament of Ten Bloods there. Two artifacts are associated with Boethiah:
Ebony Mail: Resist fire and magic, nearby enemies take poison damage, and wearer becomes quicker.
Goldbrand sword: Deals fire damage.
The daedric prince’s enemies are Ebonarm, Molag Bal, and Vaermina. He is served by Hunger which oddly also appear in Sheogorath’s realm.
In Daggerfall he had the player execute a rogue spellsword.
In Morrowind he awarded the player for commissioning a new shrine built to him on Khartag Point after the last one in Morrowind sunk to the bottom of the Sea of Ghost after a catastrophic event.
In Oblivion he had the player participate in the Tournament of Ten Bloods, a battle known for it’s carnage.