Grima Wormtongue

Grima Wormtongue was Saruman´s servant and his task was to feed lies to Theoden. He worked in Rohan under the cloak of friendship as the king´s advisor but Gandalf unmasked him and he fled to Orthanc. There Grima hurled the Palantir at the wizard, thus depriving his master of his most praised weapon. His hatred for Saruman finally took over and he cut his master´s throat in Hobbiton after the war was over.