The Frostborn

The Frostborn are a group of dwarves native to Northrend. Upon encountering the Explorers's League, the Frostborn combined their own knowledge with that that of the Explorers' League. The Frostborn are led by Yorg Stormheart, a mighty dwarf with amnesia that was found by the Frostborn. Yorg eventually recovers his memories and learns his real name is Muradin Bronzebeard. When Arthas first became the Lich King, Muradin Bronzebeard was there. During the ensuing battle, Muradin was knocked unconscious and lost his memories.

Reputation Sources

Dungeon trash mobs (20 each)

Killing trash mobs without a tabard equipped in heroic Wrath of the Lich King dungeons will award 20 reputation points each.

Commendation of the Alliance Vanguard (250 each)

Turning in a Commendation of the Alliance Vanguard will award 250 reputation points each.

Daily Quest (250 each)

Daily quests award 250 reputation points each.

Dungeon bosses (325 each)

Killing bosses in heroic Wrath of the Lich King dungeons without a tabard equiped will award 325 reputation points each.