Gandalf the Grey: The Grey Pilgrim
Gandalf, known also as Olórin in the West, was an Istari (Wizard) sent to Middle-earth around the year 1000 Third Age. Unlike the warriors of Gondor or the lords of the Elves, Gandalf’s power was primarily one of inspiration and fire. He was the bearer of Narya, the Red Ring, which gave him the ability to "rekindle hearts in a world grown cold."
The Wandering Wizard
For over two thousand years, Gandalf wandered Middle-earth, never settling in one place. While his peer Saruman the White established himself in the tower of Isengard, Gandalf preferred the company of the simple and the stout-hearted. He developed a particular fondness for The Shire and its inhabitants, a choice that many of the "wise" found trivial, but which ultimately saved the world.
The Quest for Erebor and the One Ring
In 2941 Third Age, Gandalf orchestrated the quest to reclaim the Lonely Mountain, selecting Bilbo Baggins as the final member of the company. It was during this journey that the One Ring was rediscovered. Gandalf’s tireless research and his interrogation of Gollum eventually confirmed the Ring's true nature, leading him to set Frodo Baggins on the path to Rivendell.
The Fall and the Resurrection
During the journey of the Fellowship of the Ring, Gandalf fell into the abyss of Moria while defending his companions from the Balrog, known as Durin's Bane.
Though his mortal form perished, his spirit was "sent back" by the Valar to finish his task. He returned as Gandalf the White, possessing a greater authority and radiance. He successfully cast Saruman out of the White Council, broke the spell over King Théoden of Rohan, and organized the final defense of Minas Tirith.
The Captain of the West
In the final days of the war, Gandalf acted as the primary strategist for the Free Peoples. He counseled Aragorn to lead the host to the Black Gate as a feint, providing the necessary distraction for the Ring-bearers to reach Mount Doom.
After the coronation of King Elessar, Gandalf’s mission was complete. In 3021 Third Age, he joined the other Ring-bearers at the Grey Havens. As he boarded the ship, it was revealed that he had been the guardian of Narya all along. He was the only one of the five Wizards to stay true to his purpose, returning at last to the Undying Lands.