Gandalf is a wise and powerful wizard in The Lord of the Rings, serving as a guide, counselor, and protector to the Free Peoples of Middle-earth. He plays a central role in helping lead the fight against Sauron, inspiring courage and unity among heroes such as Frodo, Aragorn, and the Fellowship. Known for his wisdom, stern authority, and hidden strength, Gandalf often appears as a mentor figure who intervenes at key moments to shape the story's course.