Gandalf (Earth-4552)

Gandalf the Grey, later known as Gandalf the White and Gandalf the Black, also called Olórin by the Elves and Tharkun by the Dwarves, and Mithrandir (Sindarin IPA: [miˈθrandir] - "White Pilgrim" or "Gray Wanderer"), was a wizard sent by the West in the Third Age to combat the threat of Sauron. He joined Thorin and his company to reclaim Erebor from Smaug, convoked the Fellowship of the Ring to destroy the One Ring, and led the Free Peoples in the seemingly final campaign of the War of the Ring. His job however was not finished, as he would have to defeat Saruman, the White Fallen, an alliance between Voldemort and Severus Snape, as well as witnessing the return of Morgoth, the Dark Lord, where he sacrificed himself using the influence of the One Ring, subsequently turning into the Dark Wizard.

In his months as Gandalf the Black, he went to become more dangerous and care less about lives and mercy at his enemies, as he now would protect Arda at all costs. Many of the subsequent actions would lead all of Arda to an apocalyptic conflict which would kill all of Arda's warriors. Gandalf and Sauron were the last ones left, but seeing the errors he made as well as many wrongful turn of events, Gandalf conjured a spell in which his consciousness were sent to his past self, where a new timeline would begin to prevents such future.