Fan Casting Gríma Wormtongue in The Lord of the Rings

Gríma, called Wormtongue, was the chief counsellor at the court of King Théoden of Rohan. Bought by the corrupted Wizard Saruman, Gríma became his mole in the Edoras court and worked to weaken the Rohirrim. When his treachery was exposed, Gríma fled to Isengard and ended up entrapped in Orthanc with Saruman. Enduring Saruman's scorn, Gríma would later follow him to the Shire which was under their allies' control. Ultimately, Wormtongue murdered Saruman after having enough of his master's abuse but was then himself slain by the liberated Shire-Folk and Bucklanders.