|Name in Japanese||サーたん|
|Appears in||Manga, OVA|
|Voice Actor (Japanese)||Ayumi Tsunematsu|
Saturn (サーたん Sātan ) is a childhood friend of Sun, Saturn is a seaweed creature whose hair allows her to cling to ceilings and entangles on objects in the water. Her hair can act as weapon to strangle opponent, and sometimes unwillingly trap a lot of things usually find in water, from fish to sea garbage, even a person. Lack of water is something she can't handle. She becomes an English teacher at Sun's junior high school in volume nine of the manga. She appeared in the second OVA (Gi).