Kind Dáin Ironfoot

Dáin is the son of Náin and the grandson of Grór, the youngest son of Dáin I of Durin's folk, and is lord of the Dwarves of the Iron Hills in Wilderland. He followed his grandfather, Grór, in lordship after Nain was killed by the great Orc chieftain Azog during the Battle of Azanulbizar, the final conflict in the War of the Dwarves and Orcs, before he could inherit the lordship.

Almost immediately after the death of Náin, Dáin rushed up the steps and slew Azog himself, thus avenging his father's death. He was a very young Dwarf at the time, being only thirty-two years of age, by the Dwarves reckoning, he was still a stripling. Dáin's feat was heralded as a magnificent and glorious triumph for one so young.

Dáin alone looked past the gate into Moria, and had the wisdom to know that it was impossible for the dwarves to return at that time. His kingdom at the Iron Hills was so great that they were the only people truly capable of dealing with Sauron's forces at that time.

Dáin was the third cousin of Thorin Oakenshield, and responded to Thorin's call for help during the quest to reclaim the Lonely Mountain. Dáin set out with five hundred Dwarves, and his army wore large and heavy war armor, with iron boots, and they were strong, even for Dwarves. They were armed with axes and swords. He arrived just in time for the Battle of the Five Armies.