- "Welcome, my lords, to Isengard."
- ―Merry in The Lord of the Rings: The Return of the King
Meriadock Brandybuck was part of the Fellowship of the Ring, along with Gandalf, Boromir, Aragorn, Frodo Baggins, Gimli, Legolas, Samwise Gamgee, and Peregrin Took. He was with the Fellowship in Moria, Lothlorien, and at Amon Hen. He saw Boromir fall, after which he and his fellow Hobbit Pippin were taken by the Uruk-hai. However, they escaped after the Uruk-hai were attacked by the Rohirrim on the Riddermark, at which point they fled into Fangorn Forest. In the forest they found Treebeard, and ent, who saved them from Grishnákh. They convinced the Ents to attack Isengard, and with that stop Saruman from destroying their wood. After this attack, he and Pippin reunited with Gandalf, Gimli, Legolas and Aragorn, and went back to Edoras. He was with the Rohirrim in the battle of Pelennor Fields, and survived the Battle of the Morannon.
- He appeared at the battle of the Black Gate in the The Lord of the Rings: The Return of the King and was playable in that level in LEGO The Lord of the Rings: The Video Game, although in the book he was injured during the battle of Pelennor Fields and was forced to stay behind.
- Because he and Pippin wear the matching Elven cloaks, the background for Merry's character token in the video game is green.