Superman, an incredibly powerful alien from the planet Krypton, defends Metropolis from supercriminals. Superman hides his identity behind the glasses of Clark Kent; a mild-mannered reporter for the newspaper the Daily Planet. At the Daily Planet Superman works with fellow reporter Lois Lane and photographer Jimmy Olsen.
Metallo is shown walking around underwater at the end of "The Way of All Flesh". Due to the fact that he's been turned into a machine powered by Kryptonite, he suffers no ill effects.