This article contains information that may ruin your enjoyment of discovering the game's secrets for yourself. Read at your own risk!
Ashen Skeletons replace Regular Emergent Skeletons in The Devil's Roar Region. During an active Skeleton Fort at the Molten Sands Fortress, Ashen Skeletons can spawn as a whole wave. Like other variants of Skeletons, they can spawn with a Cutlass, a Pistol or a Blunderbuss, or no weapon at all (unarmed attacks). They do not spawn on Skeleton Ships.
Ashen Lords summon Ashen Skeletons instead of regular Skeletons. These summoned skeletons are very weak.
The Ashen Skeletons crewed The Ashen Dragon, which was the funeral pyre of Captain Flameheart. The Captain of the ship, Captain Adara, is eternally guarding Flameheart's final resting place, ready to attack any thieves or vandals. After the release of Flameheart in The Seabound Soul Tall Tale, Ashen Skeletons became abundant in The Devil's Roar.