These demons are shadows without thickness expanded from the darkness. From an observer's point of view it was as if something two dimensional had gained a third dimension. They resemble emaciated humanoid figures with bat wings attached to their backs, their fingers ending in sharp claws. Their figures are pitch black, as if created from darkness itself. The only other color were the eyes, a sickly glowing shade of yellow.
Shadow Demons possess a special ability called 'Shadow Warp' allowing them to teleport at short distance between shadows. As implied by its name, Shadow Demon could morph into shadows, it is a monster that excelled in stealth.
- It is used as protection for the NPCs outside and Ainz every time.
- When wounded they spew a thick black fluid as blood.