Heatwave and Toxic

This is a book about two superheros named Heatwave and Toxic that are trying to make it big in saving lives. They have cool powers such as Fire, Wind, Water, and Flower Power. Heatwave has the wind, water and fire power while Toxic has flower powers. Heatwave has alien forms also. Their secreat identity names are William and Jennifer. Little did they know that a battle against a new enemy will break out.