Gandalf the White, formerly known as Gandalf the Grey, is the main protagonist of the Arda universe of J.R.R. Tolkien, which is mainly focused on Middle-earth, and ultimately, the main protagonist of the Middle-earth legendarium, appearing as a major protagonist in The Hobbit and the secondary protagonist in The Lord of the Rings. He is also the main protagonist in Peter Jackson's live-action adaptations of the books respectively, serving as a major protagonist of The Hobbit film trilogy and the secondary protagonist of The Lord of the Rings film trilogy.