Unfinished Tales
Gríma, called (the) Wormtongue, is a fictional character in J. R. R. Tolkien's "The Lord of the Rings". He appears in the second and third volumes of the work, "The Two Towers" and "The Return of the King", and his role is expanded in "Unfinished Tales". He is introduced in "The Two Towers" as the chief advisor to King Théoden of Rohan and henchman of Saruman.