Complex sentence: For example, DC's oldest superhero character, Superman, the lone survivor of the destroyed planet Krypton, originally could not fly, and his powers came from having evolved on a planet with stronger gravity than Earth's.
Split into simpler sentences: For example, DC's oldest superhero character, Superman, the lone survivor of the destroyed planet Krypton, could not originally fly. His powers came from having evolved on a planet with stronger gravity than Earth's.