Ash Spawn are humanoid-like creatures made of ash. They have fire based attacks and disintegrate to ash when killed, often dropping a variety of metal ores. They began to appear on Solstheim after the massive eruptions of Red Mountain early in the Fourth Era.
According to Elder Othreloth, ash spawn are the re-animated cremated remains of deceased Dunmer. The Dunmer cremate their dead and inter or scatter the ashes.