Haldir was an Elf of Lorien. He was described as tall. He did not have much of a role in The War of the Ring, but did guide the Fellowship, minus Gandalf of course to Lothlorien. In the movies he and an army of Elves come to Helm's Deep to fight, where he dies, along with all of the other Elves. In the book, he was never mentioned again after Lorien.