|First Appearance||The Bargain|
|Stories:||*Isle of Madness
|Play As||Battle Against|
Sheogorath is the Daedric Prince of madness and the main antagonist in Isle of Madness. Kellen, a Moth Priest and the narrator of the stories in Legends, tells his traveling companion Nagh about the story of princes' contribution to Talym Rend's descent into madness.
Sheogorath made the main character of the story, the Dunmer Talym Rend, a pawn in his game when he struck a deal with him to make him forget the painful memories of his involvement in the Worm Cult's ritual sacrifice of his son Novos. Sheogorath manipulated his mind for "motivation" and caused him to think he was fighting to cure his son of his madness instead. The prince requested for three souls to be driven mad in return for restoring Talym's son Novos to sanity. Talym complied and drove his three targets to Sheogorath's embrace. Talym returned home only to realize that Novos had been dead the entire time. Sheogorath denied Talym another audience with him when he returned to his realm, causing his unanswered questions to eat away at his sanity as he wandered endlessly around the Shivering Isles. Sheogorath granted Talym an audience when he retrieved the Sword of Jyggalag. Sheogorath used the Memory Wand and revealed Talym's original intent and memories. He proceeded to mock Talym, angering him and causing them to duel. The daedric prince of madness was defeated when Talym turned the memory wand against him and forced him to recall his memories of his previous life as the Daedric Prince of Order, Jygallag, and pleaded for him to stop the madness. He fulfilled Talym's wishes and would leave him and his companions free from his grasp.