Olórin (later known as Gandalf ;)

Olórin, in Third Age after the arrival in Middle-earth, like the other Wizards, took the shape of an old man. He was robed in grey and wandered about as a counsellor. At Mithlond he was welcomed by Glorfindel, his friend from Valinor (who had been sent earlier on a similar mission), and Círdan the shipwright who possessed Narya, one of the Three Elven Rings of Power. Círdan divined in Olórin a sense of strength and power despite his appearance as a bent and aged man. Círdan gave Narya to Olórin with a prediction of his future struggles with evil, and a promise that it would support and aid him in his labours.