Samwise Gamgee
In "The Lord of the Rings" it is stated that the Eagles of the Misty Mountains helped the Elves of Rivendell and the Wizard Radagast in gathering news about the Orcs. In addition, a prominent (though behind-the-scene) role is played by Gwaihir, and the Eagles appear in great numbers towards the end of the book. In a parallel to "The Hobbit", they arrived at the Battle of the Morannon, helping the Host of the West against the Nazgûl. Several of them rescued Frodo Baggins and Samwise Gamgee from Mount Doom after the One Ring had been destroyed.