Dáin II (b. TA 2767), son of Náin, was the King of Durin’s Folk from 2941-3019. He first gained renown in 2799 when he killed Azog in the Battle of Azanulbizar. He became lord of the Dwarves of the Iron Hills in 2805, and in 2941 led an army to the aid of Thorin II Oakenshield in the Battle of the Five Armies. When Thorin died in battle, Dáin became King of Durin’s Folk and King under the Mountain. He ruled wisely and justly, was friend to the Men of Dale and Esgaroth, and also gained the respect of the Elves of Mirkwood. During the War of the Ring, a group of Easterlings invaded Dale and Erebor, and Dáin was killed defending the body of his friend, King Brand.
In the upcoming Hobbit films, Dáin II Ironfoot will be played by Billy Connolly.