Superman: Hero of Steel

Superman is a superhero comedy TV series about Superman.

Heroes

 * Kal-El/Clark Kent/Superman (voiced by Travis Willingham) - an alien superhero and the main character of the series.
 * Kara Zor-El/Kara Danvers/Supergirl (voiced by Tara Strong) -
 * Kon-El/Connor Kent/Superboy (voiced by Nolan North) - a clone of Superman created by Lex Luthor.

Allies

 * Lois Lane (voiced by Grey Griffin) - Kent's partner at the Daily Planet and sometimes his love interest.
 * Jimmy Olsen (voiced by Rob Paulsen) - a Superman fan and another Daily Planet worker.
 * Oliver Queen/Green Arrow (also voiced by Rob Paulsen) -

Villains

 * Lex Luthor (voiced by Steven Blum) - a greedy, but inept, corrupt millionaire and Superman's main enemy.
 * Mercy Graves (voiced by Mae Whitman) - an android female assistant to Lex Luthor.
 * Metallo (voiced by TBD) - a cyborg with a kryptonite heart.
 * Atomic Skull (voiced by Paul Rugg) - a former fan of the horror movie The Atomic Skull. He felt into radiation and believes he is the movie's villain.
 * Brainiac (voiced by Corey Burton) - a planetary dimension-shrinking robot-like alien.
 * Mongul (voiced by John DiMaggio) - a ruler of a Death Star-like planet Warworld.
 * Parasite (voiced by Matthew Mercer) - a power sucking-like leech man.

Trivia

 * Some villains' origins are changed.
 * Like Batman: Master Detective, the Looney Tunes universe characters appear occasionally.