When Umath was broken, his sons (each bearing a portion of the Primal Air) emerged and began their struggle to claim their part of the world). At least six sons are known to have become important players in the Gods War:
Kolat was the eldest and the part most like Umath, and sometimes considered to “lesser Umath”. Kolat is the source of the Air Elementals.
Orlanth was originally the least of the parts, but became the greatest and reclaimed his father’s place as master of the Air Rune.
Storm Bull was the strongest of the sons. He rampaged across the surface of the world, destroying those that threatened those he loved.
Humakt was the most single-minded of the sons. He existed for conflict and strife, and went deep into the Underworld to claim the power of Death.
Vadrus was the most violent of the sons. He fought all, without mercy or care. He was defeated by Orlanth and forced to serve him, and was ultimately annihilated by Chaos in the Greater Darkness.
Ragnaglar was the cruelest and most aggressive of the sons. He fought endlessly with his brother Storm Bull, and defeated time and again, until he founded the Unholy Trio and brought the Devil into the world.
Some claim a daughter was among these – Molanni. She was the calm wind and entered the service of those who broke her father. However, most claim she was Vadrus’ child.
Countless winds, storms, and other powers followed the Storm Gods. Most helpful to humans are the Thunder Brothers – the children of Orlanth, led by Vinga. But others help too. The Choosers-of-the-Slain follow Humakt and appear on every battlefield. The sons of Storm Bull follow their father to war against Chaos, or rampage in the magic-charged airs of the Wastes.
In contrast the children of Vadrus are less helpful. Valind, the cruel Lord of Winter, and Ygg the Roaring God, are the most helpful, as they too was forced to serve Orlanth and can be called upon. But Gagarth and Iphara plague mortals.
Ragnaglar’s child is the Devil, the moral evil that brought forth the Greater Darkness. His lesser children are the broos and other such monsters. The less we speak of him the better, except to praise Storm Bull for killing him.
How does Brastalos fit in? She’s usually considered one of the powerful offspring of Kolat. She’s Magasta’s wife and largely associated with the sea god.
The Storm gods are an important dynamic force in Glorantha. They are followed by their violent and aggressive followers, like the Maruts that follow Indra. These are air elementals, lesser Air gods, embodiments of other powers (hail, lightning, snow, etc), and so on.
