Superman: Hero of Steel is an American animated action-adventure-science fiction superhero television series based on Superman by DC Comics, being created by TBD. It is produced by DC Entertainment and Warner Bros. Animation and it has aired on WB Kids since June 6th, 2020.
The series follows Superman's adventures and his constant battle against crime in Metropolis while leading with his double life as Clark Kent.
- Kal-El/Clark Kent/Superman (voiced by Josh Keaton) - a young adult who believes in truth and justice as he is in reality an alien from the planet Krypton as he heads to protect Metropolis from vicious threats.
- Lois Lane (voiced by Lacey Chabert) - a friendly and intrepid journalist who befriends Clark and tries to figure out who is the Superman, being unaware that he is Clark himself.
- Beppo (vocal effects by Dee Bradley Baker) - TBD
- Jimmy Olsen (voiced by Jason Spisak) - an intern at the Daily Planet who quickly befriends Clark and is a fan of Superman, labeling himself his pal and wants to make him proud.
- Perry White (voiced by J.K. Simmons) - the editor-in-chief of the Daily Planet who is protective of his employees and prefers to stick to the truth over favoring shady interests like the ones of LexCorp.
- Cat Grant (voiced by Kari Wahlgren) - the Daily Planet's gossip editor who loves spreading gossip, especially about Superman.
- Ron Troupe (voiced by Khary Payton) - a veteran Daily Planet reporter who is seen as a mentor to Lois Lane as he wants her to succeed as a reporter.
- Steve Lombard (voiced by Troy Baker) - the Daily Planet's sports editor who is extremely egotistical but treats all of his fellow colleagues like younger siblings.
- Lana Lang (voiced by Felicia Day) - Clark's childhood best friend who is aware of his secret identity as Superman and who he had a crush on when they were teenagers. She is a highly successful fashion model who uses her influence to keep Clark's identity a secret.
- John Henry Irons/Steel (voiced by Phil LaMarr) - TBD
- Chloe Sullivan (voiced by Hynden Walch) - an old friend of Jimmy who is extremely geeky and runs a blog about Superman.
- Kara Zor-El/Kara Danvers/Supergirl (voiced by Jessica DiCicco) - the cousin of Superman who has recently arrived on Earth and tries to prove herself as a hero, despite being in a time warp made her looking and acting younger than her actual age.
- Kon-El/Conner Kent/Superboy (voiced by Robbie Daymond) - a genetic clone of Superman who was created to kill Superman if he turns evil as he soon becomes a close ally and support to Superman.
- Krypto the Superdog (vocal effects by Dee Bradley Baker) - TBD
- Prof. Emil Hamilton (voiced by TBD) - TBD
- Jonathan and Martha Kent (voiced by Paul Eiding and Susanne Blakeslee, respectively) - Clark's adoptive parents who raised him like he was their own and want him to be a hero they know he is.
- Det. Maggie Sawyer (voiced by Janet Varney) - a detective who has a fascination with enforcing justice and is supportive of Superman's actions, being in a relationship with Gotham City's Renée Montoya.
- Det. Dan Turpin (voiced by TBD) - an extremely serious detective who doesn't fully trust Superman but gets why he is a hero.
- Bibbo Bibbowski (voiced by TBD) - a biker who is one of Superman's biggest fans and is willing to do anything to help him.
- Queen Maxima (voiced by TBD) - the ruler of the warrior planet Almerac who wishes to have the strongest man in the universe as her husband. Due to her people's questionable ways and her unrequited love of Superman, she has served as both an enemy and ally of Clark.
- Lex Luthor (voiced by Michael Rosenbaum) - the charismatic but corrupt founder and CEO of LexCorp who believes Superman to be a menace as he has developed various ways to try to kill him.
- Mercy Graves (voiced by Ashley Johnson) - Lex's near-emotionless secretary who turns out to be an android designed by Lex for the purpose of her not questioning him back.
- General Dru-Zod (voiced by Yuri Lowenthal) - a rogue Kryptonian general who finds what Superman dares protect to be worthless as he plans to completely conquer Earth.
- Ursa (voiced by Tara Platt) - Zod's vicious second-in-command who believes humanity to weak and agrees with Zod's morals and goals. She is also Zod's mate and respects him greatly.
- Non (voiced by Kevin Michael Richardson) - Zod's advisor and chief scientist who is also incredibly buff and powerful. Throughout the series, he works on perfecting the cloning process in order to recreate the Kryptonian race.
- Vril Dox/Brainiac (voiced by Eric Bauza) - an alien android who has an obsession with collecting planets and finds Earth to be the perfect addition to his collection.
- Uxas/Darkseid (voiced by Tony Todd) - TBD
- John Corben/Metallo (voiced by Nolan North) - a former military soldier who after getting discharged, convinces Luthor to turn him into a killing machine with a Kryptonite heart.
- Bruno "Ugly" Mannheim (voiced by Mark Rolston) - TBD
- Whisper A'Daire (voiced by TBD) - TBD
- Mongul (voiced by TBD) - an extremely powerful alien warlord and ruler of the competition-obsessed planet Warworld. He is a megalomaniacal genius with a hatred of Superman and strength to match his.
- Rudy Jones/Parasite (voiced by TBD) - TBD
- Bizarro (also voiced by Josh Keaton) - TBD
- Winslow Schott/Toyman (voiced by "Weird Al" Yankovic) - TBD
- Hank Henshaw/Cyborg Superman (voiced by Matthew Mercer) - a former astronaut who got into a crash that Superman ended up stopping but not in time, as his crew died and he was crippled. Blaming Superman, he has Lex Luthor turn him into a being as powerful as Superman to destroy him.
- Lobo (also voiced by Patrick Seitz) - TBD
- Mister Mxyzptlk (voiced by Richard Steven Horvitz) - TBD
- Joseph Martin/Atomic Skull (voiced by TBD) - TBD
- Clay Ramsey/Kryptonite Man (voiced by TBD) - TBD
- Leslie Willis/Livewire (voiced by Erica Lindbeck) - TBD
- The Unity (voiced by Dan Castellaneta) - a giant parasitic alien who wants to feast on the free wills of humans as doing that makes him stronger and more deadly.
- Amos Howell (voiced by TBD) - a preacher who worships the Unity and wants to spread its power to all of Metropolis.
- Morgan Edge (voiced by TBD) - a cutthroat journalist who despises Superman and wants to vilify him to the media.
- David Conner/The Eradicator (voiced by TBD) - TBD
- Lord Dominus (voiced by TBD) - TBD
- [Master Jailer]
- [The Prankster]
- The Elite, consisting of:
- Manchester Black (voiced by TBD) - an Englishman with powerful psychic abilities and leader of the anti-hero group The Elite. Manchester believes the day of the superhero to be obsolete and that the violent, murder-happy methods of his group must take over.
- Nathan Craig Jones/Coldcast (voiced by TBD) - TBD
- Rampotatek/The Hat (voiced by TBD) - TBD
- Pamela/Menagerie (voiced by TBD) - TBD
- Doomsday (voiced by TBD) - TBD
- Robert DuBois/Bloodsport (voiced by TBD) - TBD
- Atlas (voiced by TBD) - TBD
- Gerard Shugel/Ultra-Humanite (voiced by TBD) - TBD
- Siobhan McDougal/Silver Banshee (voiced by TBD) - TBD
- Titano (vocal effects by TBD) - TBD
- Clark gradually gains his powers with the main ones he has at the start are superhuman strength, flight and X-ray vision.