Grishnákh was an Orc captain from Barad-dûr in the service of Sauron in the Third Age. He led a host of Mordor Orcs to join Saruman's Uruk-hai who were taking Merry and Pippin across the plain of Rohan to Isengard. Grishnákh can only be summoned along with his Orcs through Isengard's spellbook power Grishnákh's Boys (3pp).