Shadow Souls are demonic forms of Shadow Knights who no longer have a physical form. They are the first beings to escape the nether when a portal is opened. Their main goal is to find a body to possess to gain their physical form.
They do not like light, but can stand it if it means they can get a body. Shadow souls are extremely weak compared to shadow knights but can increase in power if a shadow knight becomes angry, fueling them. They can corrupt shadow knights, like what happened to Laurance as he had fueled them, making it easier for them to corrupt him.
They seem to be black-hooded ghosts with yellow eyes. They do not have hands or legs and are larger then a normal player. The hood seems to be lined with gray on the edges.
- Malachi had the form of a shadow soul in his first appearance. This hasn't been explained.