Valhir, also known as the Volibear, is a demigod of the storm that takes the form of a vaguely humanoid polar bear.

Ancient legends states that Valhir shaped the northern lands with his deeds, be they creating mountains out of great lava wyrms or carving fjords with a swipe of his claws. He sees civilization as anathema; that mortals would rather tame the wild beast than let it run free infuriates him.

Another story describes Valhir approaching his brother, the demigod forge-ram Ornn, for weapons and tools to enact a crusade to return the world to a wild state. When Ornn refused, the two engaged in a violent brawl and ended with Valhir injured and Ornn's followers dead. Since then, Valhir has refused to use armor or weapons. Tooth, claw, and thunderous wrath would be enough.

Some claim Valhir still stalks the lands to this day. The Greatstorm, a never-ending arctic storm that wanders the world like a hungry predator, is said to be his handiwork.

Some more information about the Cult of the Volibear can be found here.