Some demons come in the night to molest their victims as they sleep.  Known as succubi, these exclusively female fallen angels steal one's vital essence through sexual acts during their nocturnal visitations.   Many explain away stories of being fondled by these lascivious lady demons as nothing more than sleep paralysis and hypnopompic or hypnagogic hallucinations, but those who experience the phenomenon aren't so sure.

Tobias Wayland