Mai Miyazaki is a Japanese
environmentalist who is murdered by operatives of the Shogun Oil Company while protesting a drilling rig in the sea off the coast of
Alaska. Miyazaki is reborn as the water elemental Naiad and destroys the drilling rig. Enraged and out of control, Naiad attacks
Firestorm, the fire elemental.
Swamp Thing begins looking for Firestorm because his attempts to
terraform an African desert valley have affected the Green, a force connecting all plant life. Firestorm is able to temporarily calm Naiad and
Red Tornado, both of whom have been driven mad by pollution. However, the two quickly return to normal, bury Firestorm underwater, and head for Japan, intending to kill its entire population. A drowning Firestorm is contacted by Maya the "Earth Mother", who tells him that she created him and the three other elementals to guard nature and force humanity to evolve. Swamp Thing saves Firestorm from drowning; the two head to
Tokyo, intent on stopping Naiad and Red Tornado. Firestorm recounts his meeting with Maya to the other elementals, who are convinced to stand down. Naiad appears in the
Brightest Day crossover event, where she is among the
metahumans who are driven insane by
Alan Scott's Starheart power. She attempts to destroy
Gotham City with a massive tidal wave, but is defeated by
Batman and
Supergirl. In
Doomsday Clock, Naiad joins Japan's sanctioned superhero team,
Big Monster Action. ==Powers and abilities==