A female human who is acting as the Hydro Archon at Focalors' request. She has a large ahoge on her head. She is the mascot and superstar of Fontaine. She is a skilled actress and loves desserts, especially cake. She is over 500 years old. She can be a bit of a klutz. Free-spirited and hating boredom, she is lively and mischievous. She is quite soft-hearted and fragile. She panics easily when things don't go as planned. She has a slightly arrogant and conceited side.

The male Hydro Sovereign; it rains when he is melancholy. His birthday is December 18th. He is the Iudex of Fontaine and Furina's closest associate. While he appears cold and strict on the outside, he is kind and thoughtful within.

A female and the true Hydro Archon. She rules over Fontaine. She has a similar personality and appearance to Furina. Like Furina, she has a large ahoge on her head, but she is much calmer. She requested Furina to act as the Hydro Archon in her stead.