Gríma, son of Galmod, called Wormtongue, was at first servant of King Théoden. But then he secretly worked for Saruman. Gríma became Théoden's advisor, and worked to weaken him. When Gandalf made the King better, Gríma fled to Isengard. In the end, he goes with Saruman to the Shire. After the hobbit uprising, Gríma kills Saruman; Gríma is killed by hobbit archers.