Olórin (later known as Gandalf ;)

When the Valar decided to send the Istari (also called Wizards) to Middle-earth to counsel and assist all those who opposed the Dark Lord Sauron, Manwë and Varda included Olórin among the five to be sent. At first, Olórin was nervous and described himself as too weak and afraid of Sauron. Manwë understood, and told Olórin that such was a reason why he should go, to overcome that fear. Furthermore, the One Ring, containing much of Sauron's power, presumably still existed somewhere. Thus, Manwë insisted that Olórin should go as the third, but Varda convinced him to send Olórin as the second instead. He agreed, and prepared for Olórin's departure from the Undying Lands with the other four, arriving about the same time that the Necromancer appeared in Mirkwood.