Board Thread:General Discussion/@comment-70.162.32.87-20140716020856/@comment-24548171-20150206155221

Hermaeus Mora could be the most powerful Daedric Prince. He only needs somebody to show its power (he used 2 Dragonborns, Miraak and The Last Dragonborn). Some may say he doesn't know everything, because it didn't know the secret of the Skaal, but some articles say that he knows everything.

Also, Sheogorath could be the most powerful,  before and after of the 4th Era. He was Jyggalag, making him extremely powerful. He was Sheogorath himself, the most mad person ever created. He would do anything, from converting everybody into Sweetrolls to spawn Dremoras randomly. After the final of the 3rd Era/start of the 4th Era, he was the Hero of Kvatch, the only person that ever defeated Jyggalag, remember that every Daedric Prince, EVERY DP, had to contribute for defeat him and convert him into Sheogorath. That means that before 4th Era he was Jyggalag, the Daedric Prince of Order and Sheogorath, Prince of Madness at the same time, and after 4th Era he was the Hero of Kvatch and Sheogorath at the same time.

In my opinion Sheogorath is the most powerful Daedric Prince.