Treebeard is the Ent who guides Merry and Pippin in The Lord of the Rings.
Treebeard, whose Elvish name is Fangorn, is the oldest of the Ents encountered by the hobbits. Merry and Pippin meet him in Fangorn Forest after escaping from the Uruk-hai, and he brings them into the slow-moving deliberations of the Ents.
At first, Treebeard is reluctant to become involved in the war between Saruman and Rohan. The destruction of forests by Saruman’s forces eventually changes the Ents’ position. Their march on Isengard becomes one of the major turning points in The Two Towers.
Ents are Tolkien’s tree-like shepherds of forests, and their name comes from an Old English word meaning “giant.” Treebeard is not merely a talking tree: he is an ancient being with a distinct language, culture, and memory of Middle-earth’s changing ages.