Dullahan

A demonic knight with a grotesque figure, its head has been severed from its body. It inhabits the Mamono Realm. Because of its identifying feature, it’s also known as the “headless knight.” They are the prized advance-guard of the Mamono Lord's knights. They are extremely loyal, and possess exceptional military prowess. In the illustration, they hold their head with their left arm, but most of the times they appear, they put their head on their body, so it’s often hard to even realize that they’re Dullahan.