Katsuko captures and releases carbon dioxide on her opponents inducing deep sleep.
Katsuko has played multiple roles over the course of her long life - from rainmaker to weather monitor. She gained her powers after coming into contact with in a mysterious green sludge in the waters near Tokyo, Japan. A curious and compassionate person, Katsuko may be shy but she is quick to make friends and quicker still to help her fellow superheroes. She is considered by many to be the defender of the oceans and planets.