An incubus is a male demon in folklore that is said to visit sleeping women to engage in sexual activity. This figure is often associated with nightmares and is believed to drain the life force of its victims during these encounters. The concept of the incubus has appeared in various cultures throughout history, often reflecting societal fears and anxieties about sexuality. In contrast, a succubus is the female counterpart to the incubus, visiting men in their dreams. Both entities are part of a larger tradition of supernatural beings that interact with humans in intimate ways, often leading to themes of seduction and danger in literature and mythology.