Mélusine is a figure from European folklore, particularly known in French legends. She is often depicted as a beautiful woman who transforms into a serpent or fish from the waist down on certain days of the week. This dual nature symbolizes the connection between the human and the supernatural. In many stories, Mélusine marries a nobleman, usually named Raymond, and they have several children together. However, her secret transformation must remain hidden, leading to various conflicts and ultimately her tragic fate. Mélusine's tale explores themes of love, secrecy, and the consequences of breaking promises.