Succubus

The Succubus is a Demon subspecies and one of the many sentient species of Mareth.

Succubus NPCs

Collared Human Girl - She isn't human at all, but a succubus pretending to be.
Fido's Mistress - Possibly originally a Lacta Bovine transformed into a succubus.
Vapula - A succubus dominatrix, and the leader of the demons raiding Owca. A highly corrupt character who defeats her gang multiple times can disband them and claim her as their slave.
One of the Griping Demons - An incubus/succubus duo who can be overheard talking about someone named "Syrena" at the Bizarre Bazaar.
Cerulean Succubus - A towering, massively buxom blue succubus summoned as a result of drinking the Cerulean Potion.
Lucia - A succubus found traveling in the desert with her human lover, Marcus. Described as having established a contract with Marcus, in which she is allowed to feed on his cum in exchange for obeying him. She wants Marcus to fully embrace corruption and become an incubus. After encountering the pair, she will gift the character Succubi's Delight while exploring the desert.
Secretarial Succubus - Found only in the Demon Factory.

It is not possible to transform into a succubus without loosing the game.

In the Cerulean Fate Bad End you are transformed into a penis-equipped(!) succubus.