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The Dead Men of Dunharrow (also referred as the Shadow Host, the Grey Host, the oathbreakers, or simply the Dead) are fictional characters in J. R. R. Tolkien's Middle-earth legendarium. They appear in The Lord of the Rings as the ghost of Men of the White Mountains (Ered Nimrais), who were cursed to remain in Middle-earth by Isildur after they abandoned their oath to aid him in the War of the Last Alliance. They were formerly known as the Men of the Mountains, and they were related to the Dunlendings.

At the end of the Second Age, their king, known as the King of the Mountains, pledged allegiance to Isildur at the Stone of Erech. However, these Men later refused to aid Isildur in his war against Sauron, they came to the aid of neither side, but instead hid in the mountains. They had previously worshiped the Dark Lord during the Dark Years. As punishment, Isildur cursed them; saying that they would not have peace or rest till they fulfilled their oath upon his command or that of his heirs.

Their spirits haunted the caverns beneath the Dwimorberg, the Haunted Mountain, and the valley of Harrowdale that lay in its shadow—though they were said to appear in the valley only in times of trouble or death, haunting the hill of the Stone of Erech.

They followed him through Gondor's lands and fiefs south of the Mountains, and at the port of Pelargir they drove away the Corsairs of Umbar, allies of Sauron. Having fulfilled their oath, Aragorn granted them their freedom, and they vanished at last from the world. After this, Aragorn gathered the warriors of the region to him. They sailed to Minas Tirith on the Corsairs' own ships, and saved the day at the Battle of the Pelennor Fields.

King Of The Dead has not been a contender in any CBUB matches.