Shadowfax

Shadowfax is the lord of all horses. He is a close friend of Gandalf. In Lord of the Rings:The Two Towers, Gandalf summoned Shadowfax to carry him to Rohan with Aragorn, Gimli and Legolas. He then went on to carry Gandalf into battle in many occasions during "The War of the Ring":


 * The battle for Helms Deep
 * The battle for Minesterith (Lord of the Rings:Return of the King)
 * The final battle against Sauron's forces, outside the Black Gates of Mordor

He was also instrumental in transporting Gandalf and Pereguin Took from Rohan to Minesterith, when Sauron believed that Pippin had the Ring.