Orpheus

Orpheus is a sleep paralysis demon that feeds off the fear of his victims. He elicits nightmares in people's dreams. Sleep paralysis is a temporary loss of muscle control just after falling asleep or before waking up. Sleep paralysis frequently involves hallucinations or a feeling of suffocation. No one knows exactly what causes sleep paralysis, but it is linked to sleep disorders and certain mental health conditions. Orpheus gets stronger the more terrified his victim is. He's sadistically insane and cruel. You wake up from a bad dream, and find that you can't move, nor speak. You're barely able to breath, as you see a dark ominous sinister figure in the shadows looking at you from across the room smiling wickedly.