The succubus rarely discloses her true form.
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The succubus is a demon, stemming from medieval legend, that takes the form of a woman in men’s dreams with the purpose of having sexual intercourse with them. They are often depicted as having demonic wings and hooves, and a purplish complexion or skin tone. They might also appear as red, like a devil or demon spirit. They survive by feeding off the man’s energy, and will feed for several nights until there is nothing left of him.

The succubus is thought to be an allegory to unclean thoughts. If you dream of lustful acts it may come back on you as a curse. Tales of succubuses help men from being overwhelmed with sexual thoughts, by identifying those thoughts and dreams with evil, and stopping them from reoccurring. In modern times succubi (plural) are a term for women who drain energy from their companions.