Brimstone dwarves' aetherial power is to see in the dark and to their skill in crafting stone. Working with stone and earth allows them to gain earthpower, but they also need to gain infernum through acts of violence and malice. Common powers they gain from this include draining light from an area into the stone, controlling others through stone artifacts, and brimstone flame.

All dwarves are known for their steady feet, their inborn toughness, and their shrewdness.

Brimstone dwarves live in a strict hierarchical society in their mountain nations. They are led by a powerful thane who is chosen through extreme political machinations, and who uses his power to select a court of supporters (often very treacherous all the same). They value cunning and strength, and any weakness is to be exploited. Because they gain power through their works, however, all brimstone dwarves take part in crafting. They keep slaves for non-earth or malicious crafts, but they do the important work themselves.

Brimstone dwarven families center around control and exploitation. The head of a family (male, female, or otherwise) chooses a favorite child to train and raise, and the others are left to fend for themselves. It might not even be their own child, as they exploit their extended families if they can. They wield their inheritance and their power over those closest to them in order to keep them from rebelling or usurping them.

There is a strong religious order within brimstone dwarven society, which is a cruel and dark faith that demands ritual sacrifice, demon worship, and tribute from all in blood or treasure. They are a counter-balance to the power of the thane, but they do not often delve into civic affairs, so long as the tributes keep coming.