The Darkening Wild
King Dain II, of Erebor
Dain is Thorin’s cousin, and became King Under the Mountain at Thorin’s death, rather than his closer cousin Balin – something that Balin has not forgotten.
As king, Dain is grim and direct. When he ruled the Iron Hills, he was king of a valiant people who had to fight against continual incursions from the trackless East. As King Under the Mountain, he is incalculably wealthy, and over time is turning more taciturn toward his erstwhile allies.