Gandalf

Gandalf is a wizard, one of the Istari order, and the leader of the Fellowship of the Ring. He is a powerful being, but works mostly by encouraging and persuading. He is focused on the mission to counter the Dark Lord Sauron by destroying the One Ring. He is associated with fire, and his ring of power is Narya, the Ring of Fire. He delights in fireworks to entertain the hobbits of the Shire, while in great need he uses fire as a weapon. Gandalf is an immortal spirit from Valinor, but his physical body can be killed. In The Hobbit, he assists the 13 dwarves and the hobbit Bilbo Baggins with their quest to retake the Lonely Mountain from Smaug the dragon. In The Lord of the Rings, he reveals that Sauron's retreat was only a feint, and that Bilbo's ring is the One Ring that Sauron needs to dominate the whole of Middle-earth. He leads the Fellowship of the Ring to defeat Sauron by destroying the Ring. After he dies fighting a Balrog, Gandalf is sent back from Valinor to Middle-earth to complete his mission as Gandalf the White. He helps to counter the enemy in Rohan, Gondor, and finally at the Black Gate