Complex sentence: E-Man is a comic book superhero created in a short-lived Charlton Comics series in 1973, and which since has become a cult-classic sporaadically revived up by various independent comics publishers.
Split into simpler sentences: E-Man is a comic book superhero created for a short-lived Charlton Comics series in 1973. He has since become a cult-classic sporaadically revived up by various independent comics publishers.