Théoden was a major character in The Lord of the Rings film series. He was the King of Rohan and Lord of the Mark, father of Théodred and uncle of Éomer and Éowyn. He was portayed by Bernard Hill.
The Lord of the Rings (film series)[]
The Lord of the Rings: The Two Towers[]
Théoden's mind was poisoned by Saruman, who ruled Rohan with the King under his influence along with Saruman's lackey, Gríma Wormtongue. However, Gandalf and his companions, Aragorn, Legolas and Gimli came to the kingdom to free Théoden from Saruman's spell.