Summary
- Gandalf's claim to be Saruman when he returned in The Two Towers was because his resurrection as Gandalf the White meant he had taken on the role and form of the White Wizard.
- The wizards in Middle-earth were avatars or incarnations of the powerful Maiar beings, with Saruman as the leader. However, when Saruman abandoned his role, this necessary position was left vacant.
- Gandalf became the White Wizard because he hadn't abandoned his mission to guide the Elves and Men of Middle-earth in their fight against Sauron. His resurrection as Gandalf the White was a recognition of his devotion and success in his role.