Gandalf
Gandalf is a Middle-earth wizard from the books The Hobbit and The Lord of the Rings.
Fictional biography
Gandalf the Grey wanted Bilbo Baggins to let him go an adventure with him and the Company of Thorin Oakenshield to take back Erebor from Smaug. Decades later, he would help Bilbo's nephew Frodo bring the One Ring back to the fires of Mount Doom.
Peter Jackson adaptations (2001-2003, 2012-2014)
In the Peter Jackson movie adaptations of both books, Gandalf was played by Ian McKellen. In The Hobbit movies, which were written as a prequel to The Lord of the Rings movies, he figures out that the Necromancer happens to be Sauron.
Reception
His notable quote "You shall not pass" is known for fantasy and literary fans.
Gandalf Media
Gwaihir the Eagle rescues Gandalf from Orthanc. Scraperboard illustration by Alexander Korotich , 1981
Odin, the Wanderer by Georg von Rosen, 1886
Earlier guide figure: Virgil guides Dante around the lowest circle of hell in Dante's Inferno. Painting by Gustave Doré