25 Characters created by Mike Sekowsky

B'wana Beast is a fictional superhero appearing in American comic books published by DC Comics. The series is infamous for its portrayal of a Caucasian savior in Africa; the character's first name, "Bwana", is a Swahili word for leader or "master". The character was perceived as racist even at DC Comics; co-creator Mike Sekowsky eventually refused to continue drawing the strip.

Brain Storm is the name of three fictional characters appearing in the comics published by DC Comics. The first Brain Storm appeared in Justice League of America #32 and was created by writer Gardner Fox and artist Mike Sekowsky.

Lucas "Snapper" Carr is a fictional character appearing in American comic books published by DC Comics. The character was created by Gardner Fox (writer) and Mike Sekowsky (penciller), and made his first appearance in The Brave and the Bold in February 1960. From 1960 to 1969, Snapper Carr appeared as a supporting character to the Justice League of America, a superhero team. The character occasionally appeared in comics featuring the Justice League from 1969 to 1989, when the Invasion! limited-series comic book gave him superpowers.

Despero is a fictional supervillain that appears in comic books published by DC Comics. The character first appears in Justice League of America #1 and was created by Gardner Fox and Mike Sekowsky.

Doctor Cyber is a fictional supervillainess appearing in DC Comics publications and related media, traditionally as an adversary of the superhero Wonder Woman. She first appeared in 1968 as the head of a vast global criminal and terrorist group in Wonder Woman, vol. 1, issue #179, written by Dennis O'Neil and illustrated by Mike Sekowsky and Dick Giordano.

Doctor Destiny is a supervillain appearing in American comic books published by DC Comics.

The Faceless Hunters are a race of alien supervillains in the DC Comics universe that first appeared in Strange Adventures #124,. They were created by Gardner Fox and Mike Sekowsky. The Faceless Hunters hail from Klaramar, the word Klar-a-mar breaks down into "clear of imperfection". Klar is the German language term for "clear", and "mar" can mean either blemish or imperfection.

Felix Faust is a fictional supervillain who appears in stories published by DC Comics. The character first appeared in 1962 as an adversary of the Justice League of America.

Star Hawkins is a science fiction detective character published by DC Comics) in their flagship science-fiction anthology title Strange Adventures. He and his ever-present robot assistant Ilda first appeared in Strange Adventures #114 and featured in 21 issues of the title, but after that only made four other appearances in other DC Comics before he was killed off in Mystery In Space vol 2 #2. The characters were created by John Broome and Mike Sekowsky.

Hyathis is a fictional extraterrestrial monarch published by DC Comics. She first appeared in Justice League of America vol. 1 #3, and was created by Gardner Fox and Mike Sekowsky. In all her World's Finest Comics appearances she is referred to as Hyanthis.

I Ching is a fictional, blind martial artist published by DC Comics. He first appeared in Wonder Woman vol. 1 #179, and was created by Denny O'Neil and Mike Sekowsky. The character was created to further the editorial plans to reboot Wonder Woman's premise and characters.

Professor Anthony Ivo is a fictional supervillain, a mad scientist in DC Comics. He is the creator of the android villain Amazo and, along with villainous scientist T.O. Morrow, the co-creator of the android Tomorrow Woman. As a result of his thanatophobia, Ivo has used his own scientific discoveries to make himself nearly immortal and invulnerable, but this has resulted in his appearance becoming monstrous in the process.

Kanjar Ro is a fictional supervillain appearing in comic books published by DC Comics.

Key is the name of two fictional supervillains in the DC Comics universe. The most widely known version, the Modern Age villain that first appeared in 1965, is a long-time and highly dangerous opponent of the Justice League. The character continues to appear in Justice League and Batman comics, with a ghoulish appearance since 1997.

Doctor Light is a bipartite character, comprising supervillain Arthur Light and superhero Jacob Finlay, appearing in comic books published by DC Comics.

Manhunter is the name given to several different fictional characters appearing in comic books published by DC Comics. They are depicted as superheroes and antiheroes.

Owlman is the name of several fictional characters who appear in comic books published by DC Comics. The characters are villainous alternate-universe counterparts of Batman.

Power Ring is the name of several supervillains and one superheroine appearing in comic books published by DC Comics. The supervillains are alternate-reality counterparts of Green Lanterns Hal Jordan, Kyle Rayner, and John Stewart, respectively. Originally residing on Earth-Three, which was subsequently destroyed during the 12-issue Crisis on Infinite Earths limited series, Power Ring, along with the other Syndicate members, end up being re-created in the Anti-Matter Universe's Earth.

Queen Bee is the name of six different DC Comics supervillains.

Robin of Earth-Two is an alternate version of the fictional superhero Robin, 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 which had been published in the Golden Age of comic books. This allowed creators to publish comic books taking place in current continuity while being able to disregard Golden Age stories featuring Robin, solving an incongruity, as Robin had been published as a single ongoing incarnation since inception. Unlike his main counterpart, Robin is the only alter ego of Dick Grayson, who uses the title into adulthood, rather than taking on later codenames such as Nightwing or Batman. In addition, the name "Robin" is not taken on by later characters.

The Royal Flush Gang is a fictional group of supervillains appearing in DC Comics. The group, which debuted in Justice League of America #43, use a playing card theme. Their code names are based on an ace-high straight in poker: Ace, King, Queen, Jack, and Ten. The group returned to battle the Justice League of America many times, and also appeared in other comics, including Wonder Woman, Formerly Known as the Justice League and Superman. The group has been described as "some of the most original villains of their time".

Shaggy Man is the name of several fictional characters that appear in comic books published by DC Comics.

Starro is a fictional supervillain that appears in comic books published by DC Comics. The character first appeared in Brave and the Bold #28, and was created by Gardner Fox and Mike Sekowsky.

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.

Weapons Master is a supervillain, who appears in various DC Comics publications. He was created by artist Mike Sekowsky and writer Gardner Fox. He first appeared in Brave and the Bold #29.