Ghân-buri-Ghân is the chief of the Wild Men of Drúadan Forest. He offers to help the Rohirrim find a secret path to Minas Tirith in return for peace for his people and the destruction of orcs. Though considered strange and unfamiliar by the people of Rohan, he is true to his word. Aragorn rewards him by granting the Wild Men full dominion over the forest.
Ghân-buri-Ghân Character Timeline in The Return of the King
The timeline below shows where the character Ghân-buri-Ghân appears in The Return of the King. The colored dots and icons indicate which themes are associated with that appearance.
Book 5, Chapter 5
...the Rohirrim: many enemies occupy the roads towards Minas Tirith. The Wild Man gives his name—Ghân-buri-Ghân—and explains that he is the leader of the Wild Men who are adept observers. He... (full context)
...are focused on their destruction of the city. Suddenly, Merry feels the wind change as Ghân-buri-Ghân predicted. Théoden gives a battle cry, the horns of the Rohirrim sound, and the darkness... (full context)