Zarastrax, disguised as a human paladin of Stormwind, has traveled from Northrend to scout the Alliance for any traitoring acts or dangerous motives to report to Alexstrazsa. He dresses like a noble to gain the visible trust of the citizens. He was born from the Broodmother Alexstrazsa while she was still in Outland. Luckly, Zarastrax was not yet transported to Deathwing before Alexstrazsa was freed. He traveled with the broodmother till he was a mature whelp. Then he went off and learned of other life in the world.