Captain Cosmo was born on a planet far away from Earth. When that planet's sun exploded, it killed everyone on his planet but him.
He woke up on Earth, and the radiation from the star gave him some powers, such as being able to live in space, flight, super strength, and the ability to handle extreme temperatures. He can also create a vacuum with his hands. If you can catch him and expose him to enough amounts of water, it will kill him.
He decided to use his powers for the greater good, and his main enemy is Marino, a water born mutant would wants the world to be covered in water. Marino is the fly that irritates Captain Cosmo every day.