39 Characters created by Jerry Siegel

Superboy is the name of several fictional superheroes appearing in American comic books published by DC Comics. These characters have been featured in five Superboy comic book series, along with other series, such as Adventure Comics and various series featuring teenage superhero groups. Superboy has also appeared in various animated and live-action television series. There have been three major incarnations of the character: the young Superman; a teenaged clone named Kon-El; and the son of Superman and Lois Lane, Jonathan Kent.

Gim Allon, also known as Colossal Boy, Leviathan, and Micro Lad, is a fictional comic book superhero appearing in books published by DC Comics. Created by writer Jerry Siegel and artist Jim Mooney, the character first appeared in Action Comics #267, and is a member of the 30th and 31st century superhero team, the Legion of Super-Heroes.

Bouncing Boy is a fictional comic book superhero appearing in publications by DC Comics, usually as a member of the Legion of Super-Heroes. Born on Earth as Chuck Taine, Bouncing Boy has the power to inflate like a giant ball and bounce around. This combination of invulnerability and velocity makes him a surprisingly useful combatant. Born without any powers, he received his abilities by accidentally drinking a super-plastic formula he believed was a soda. Bouncing Boy is known for sharing a long-term romantic relationship with fellow Legionnaire Triplicate Girl of the planet Cargg, whom he eventually marries. In Reboot Legion continuity, Chuck Taine is the Legion's mechanic.

Brainiac 5 is a fictional superhero character who exists in the 30th and 31st centuries of the DC Universe. He is from the planet Colu and is a long-standing member of the Legion of Super-Heroes.

Comet is the name of two fictional comic book characters owned by DC Comics whose adventures have been published by that same company. The first character was a sapient horse with magical powers who was once a centaur in ancient Greece. The second character is a shapeshifter with three forms. Both characters are connected to the Superman family of titles.

Jim Corrigan is the name of three fictional characters that have appeared in numerous comic books published by DC Comics.

Dev-Em is a fictional character who appears in DC Comics. He first appeared in Adventure Comics #287, created by Jerry Siegel and George Papp. Various versions of the Dev-Em character has appeared over the years in Legion of Super-Heroes related comic books.

Doctor Occult is a fictional superhero appearing in American comic books published by DC Comics. Created by Jerry Siegel and Joe Shuster, Doctor Occult is an occult detective and private investigator and user of magic who specializes in cases involving the supernatural. Doctor Occult first appeared in 1935 around the Golden Age of Comic Books by National Comics Publications and Centaur Publications within anthology titles making him the earliest recurring originally featured fictional character created by DC Comics still currently used in the DC Universe. He is commonly affiliated with the All-Star Squadron and has appeared occasionally in paranormal related stories by DC and Vertigo Comics titles. As of 2020, Doctor Occult has appeared in a few official tie-in comic books and has appeared in one DC based video game which is established as within DC's multiverse canon.

S.T.R.I.P.E. is a fictional superhero in the DC Comics Universe. S.T.R.I.P.E. is a powered armor suit invented and worn by Patrick "Pat" Dugan, the former adult sidekick to teenage superhero Sylvester Pemberton, the Star-Spangled Kid. "Stripesy", as he was originally called, is a gifted mechanic who built the Star Rocket Racer, a bubble-topped limousine with the functions of a rocket and helicopter. Together, they were members of the Seven Soldiers of Victory and the All-Star Squadron. Stripesy was created by Jerry Siegel and Hal Sherman, and first appeared in Star Spangled Comics #1.

Funnyman is a fictional comic book character whose adventures were published in 1948 by Magazine Enterprises.

Jor-El, originally known as Jor-L, is a fictional character appearing in comic books published by DC Comics. Created by writer Jerry Siegel and artist Joe Shuster, Jor-El first appeared in a newspaper comic strip in 1939 with Superman.

Jonathan Kent and Martha Kent, often referred to as "Pa" and "Ma" Kent (respectively), are the fictional adoptive parents of Superman. They live in the rural town of Smallville, Kansas. In most versions of Superman's origin story, Jonathan and Martha were the first to come across the rocket that brought the infant Kal-El, with their adopting him shortly thereafter, renaming him Clark Kent, "Clark" being Martha's maiden name.

The Kryptonite Man is the name of several supervillains who appear in stories published by DC Comics.

Lois Lane is a fictional character appearing in American comic books published by DC Comics. Created by writer Jerry Siegel and artist Joe Shuster, she first appeared in Action Comics #1. Lois is an award-winning journalist for the Metropolis newspaper the Daily Planet and the primary love interest of the superhero Superman and his alter-ego, Clark Kent. In DC continuity, she is also his wife and the mother of their son, Jon Kent, the current Superboy in the DC Universe.

Lara is a fictional character who appears in comic books published by DC Comics. She first appeared in the Superman comic strip and was created by Jerry Siegel and Joe Shuster. Lara is the biological mother of Superman, and the wife of scientist Jor-El. Lara Lor-Van is Lara's full maiden name, as "Lor-Van" is the name of Lara's father. Most depictions of Kryptonian culture show that Kryptonian women use their father's full name as their last names before marriage. After marriage, they usually are known simply by their first names, though various versions show they use their husband's full name or last name as their married last name.

The Legion of Super-Pets is a fictional team of super-powered pets in the DC Universe. The original membership included Krypto the Superdog, Streaky the Supercat, Beppo the Super-Monkey and Comet the Super-Horse, with the shape-shifting alien Proty II later joining. The team first appeared in Adventure Comics #293, although all of the members except for Comet had appeared individually in earlier issues. The group was removed from mainstream DC Comics continuity in 1986 but a new version appeared in mainstream comics in 2017.

Lyla Lerrol is a fictional character appearing in American comic books published by DC Comics. She first appeared in Superman #141. She is one of the many Superman characters with the initials "LL".

Triplicate Girl is a fictional character, a superhero in the 30th and 31st centuries of the DC Comics Universe and a member of the Legion of Super-Heroes. She has also had the aliases Duo Damsel, Triad, Una, Duplicate Damsel and Duplicate Girl.

Lena Luthor is a fictional comic book character in DC Comics. She is the sister of Superman's nemesis Lex Luthor. She is played by Cassidy Freeman in the television series Smallville and by Katie McGrath in the Arrowverse series Supergirl.

Alexander Joseph Luthor is a fictional supervillain appearing in American comic books published by DC Comics. The character was created by Jerry Siegel and Joe Shuster. Lex Luthor originally appeared in Action Comics No. 23. He has since endured as the archenemy of Superman.

Metallo is a name used by multiple supervillains appearing in comic books published by DC Comics, commonly as an adversary of Superman.

Mr. Muscles is a fictional comic book superhero created in 1956 by writer Jerry Siegel for Charlton Comics, and drawn by Bill Fraccio for the first of two issues of his namesake comic, and by the team of penciler Charles Nicholas and inker Vince Alascia for the second. A young Dick Giordano provided the premiere issue's cover. Siegel, who co-created Superman, wrote both issues featuring Charlton's own muscleman.

Mister Mxyzptlk, sometimes called Mxy, is a fictional impish character who appears in DC Comics' Superman comic books, sometimes as a supervillain and other times as an antihero.

Nature Boy is a superhero created by Jerry Siegel and drawn by John Buscema and others. He first appeared in Nature Boy #3, published by Charlton Comics.

James Bartholomew Olsen is a fictional character appearing in American comic books published by DC Comics. Olsen is a young photojournalist working for the Daily Planet. He is close friends with Lois Lane and Superman, and has a good working relationship with his boss Perry White. Olsen looks up to his coworkers as role models and parent figures. In the Silver Age, he appeared in the comic book series Superman's Pal Jimmy Olsen.

Phantom Girl is a fictional character, a comic book superhero who appears in books published by DC Comics, and is a member of the Legion of Super-Heroes in the 30th and 31st centuries. In the Post-Zero Hour continuity, she is known as Apparition. She has the power to turn intangible, allowing her to phase through solid objects as do all other natives of her home planet, Bgztl. Her mother is Winema Wazzo. Tinya’s ancestor Linnya Wazzo appears in DC’s New Age of Heroes, in the Terrifics.

The Prankster is a fictional character, a supervillain in the DC Comics universe and primarily a foe of Superman. The Prankster's particular gimmick is the use of various practical jokes and gags in committing his crimes.

The Presence is a fictional character in comic books published by DC Comics. The character debuted in More Fun Comics #52, and was created by Jerry Siegel and Bernard Baily.

Samuel Emerson "Slam" Bradley is a fictional character that has appeared in various comic book series published by DC Comics. He is a private detective who exists in DC's main shared universe. The character concept was envisioned by DC Comics founder Malcolm Wheeler-Nicholson and the character was created by collaboration of Jerry Siegel and Joe Shuster, who both later became more well known as the creator of Superman. The fictional characer first appears in the Golden Age of Comic Books in the anthology title Detective Comics being introduced in the first issue. He later commonly was associated with Batman and other spinoff Batman characters when revived.

Spectre is the name given to several fictional anti-hero characters who have appeared in numerous comic books published by DC Comics. The character first appeared in More Fun Comics #52. He was created by Jerry Siegel and Bernard Baily, although several sources attribute creator credit solely to Siegel, limiting Baily to being merely the artist assigned to the feature.

Spider Girl is a fictional character appearing in books published by DC Comics. The character was first mentioned as a concept in the letters page of Adventure Comics when a fan suggested a character with the power of super-strong prehensile hair.

Streaky the Supercat is a fictional character that appears in comic books published by DC Comics. He first appeared in Action Comics #261 and was created by Jerry Siegel and Jim Mooney.

Sun Boy is a fictional superhero in the 30th and 31st centuries of the DC Comics universe. Sun Boy is a Legion of Super-Heroes member with the ability to unleash internal solar energy to whatever degree he wishes, from enough to light a single candle to enough to melt nearly any obstacle.

Superboy is a fictional superhero that appears in American comic books published by DC Comics. The character was created by Jerry Siegel and Don Cameron and is based on the character of Superman that Siegel co-created with Joe Shuster. Superboy first appeared in the comic book More Fun Comics #101 in 1945.

Superman is a fictional superhero, who first appeared in American comic books published by DC Comics. The character was created by writer Jerry Siegel and artist Joe Shuster, and first appeared in the comic book Action Comics #1. Superman has been adapted to a number of other media including radio serials, novels, movies, television shows and theatre.

Superman of Earth-Two is an alternate version of the fictional superhero Superman, who appears in American comic books published by DC Comics. The character was introduced after DC Comics created Earth-Two, a parallel world that was retroactively established as the home of characters whose adventures had been published in the Golden Age of comic books. This allowed creators to publish Superman comic books taking place in current continuity while being able to disregard Golden Age stories, solving an incongruity, as Superman had been published as a single ongoing incarnation since inception. The character first appeared in Action Comics No. 1.

Superwoman is the name of several fictional characters from DC Comics. Most of them are, like Supergirl, women with powers similar to those of Superman. The name was trademarked by Detective Comics, Inc. to prevent competitors from using it. As was the practice, a publication produced solely for legal purposes was created with the title of Superwoman. The cover was a reproduction of More Fun Comics, with the interior being a reprint of the third issue. The first true appearance of Superwoman was in Action Comics.

Ultra Boy is a fictional character, a comic book superhero in DC Comics. He is a member of the Legion of Super-Heroes in the 30th and 31st centuries of the DC Universe. Ultra Boy gained his powers when the vehicle he was flying through outer space was swallowed by an ultra-energy beast, exposing him to radiation while inside. His real name is derived from the biblical figure Jonah who also survived being swallowed by a "large fish".

The Ultra-Humanite is a fictional supervillain appearing in comic books published by DC Comics, usually as a recurring adversary of Superman.