Others DC characters have amazing and dense stories that could be easily adapted to the cinema or TV screen. Some of these characters are essential and strategic in DC Universe.
Justice Society of America
The JSA appeared for the first time in All Star Comics #3 (Winter 1940) and became historically the first team of superheroes in comic books. The team was created by Sheldon Mayer and Gardner Fox.
The rumors about the Wonder Woman film suggest that the movie will be set in the 1920s or during World War II. Currently, the JSA origin happened during the WWII by eight of the world's greatest heroes who were send to stop the invasion of Britain and to protect President Roosevelt from a group of Valkyries summoned by Hitler.
These heroes were the classic Green Lantern (Alan Scott), the classic Flash (Jay Garrick), the Spectre (Jim Corrigan), Doctor Fate (Kent Nelson), Hourman (Rex Tyler), the Sandman (Wesley Dodds), the Atom (Al Pratt) and Hawkman.
So the origin story could be a great screenplay to link the films of Wonder Woman and the Justice League showing the JSA like the precursor of the League.
The Unknown Soldier was created by Robert Kanigher and Joe Kubert and made the first appearance in Our Army At War #168 (June 1966) during a Sgt. Rock story, "I Knew The Unknown Soldier!".
The Unknown Soldier is an unnamed man with the face swathed in bandages because of a grenade explosion that killed his brother and destroyed his face irreversibly.
The soldier was a master of disguise using latex masks and carried out many missions for the Allied Forces. He became a valuable member of the O.S.S. during the Second World War. His greatest mission was the Hitler's suicide.
The Metal Men first appeared in Showcase #37 (March–April 1962) and were created by writer Robert Kanigher and penciller Ross Andru. The group could be an amazing film franchise principally because the characters have appeared in comic books and other DC Comics-related products.
The team was created by Doctor Will Magnus when he projected robots with a responsometer, a device that gives them human intelligence and personalities and allows them to control their given element. The original members of the group are Gold, Iron, Lead, Mercury, Platinum and Tin.
In 2012, the Men in Black 3 director Barry Sonnenfeld was in talks with Warner Bros. to make a live action film version of the heroes group.
Outsiders
Briefly, the Outsiders are a black-ops team of super-heroes originally organized and led by Batman. The group does not fit in the norms of the "mainstream" superhero community.
The Outsiders’ origin story could be easily adapted in theaters as a team organized by Batman after his hypothetical banishment from the Justice League after the second film of the team of superheroes which could be based in the Tower of Babel storyline.
The Team made the first appearance in The Brave and the Bold #200 (July 1983) by the hands of Mike W. Barr and Jim Aparo.
Gotham City Sirens
Other team linked Batman and the Suicide Squad could be adapted as a spin-off film, principally with the introduction of Harley Quinn in the DC Cinematic Universe.
The Gotham City Sirens is a comic book series written by Paul Dini, with art by Guillem March and released in June, 2009.
The series features a team formed by Catwoman, Poison Ivy and Harley Quinn.
The Question (Vic Sage)
The first Question was created by Steve Ditko debuting in Charlton Comics Blue Beetle #1 (June 1967). The character was acquired by DC Comics in the early 1980s and incorporated into the DC Universe where he was revamped by Dennis O'Neil and Denys Cowan in 1987.
In the plot, The Question is Vic Sage, a brilliant investigative reporter, who solves cases that his civilian identity cannot. The Question wears an artificial skin to hides his civilian identity. The Pseudoderm was developed by his friend Aristotle Rodor.
Both characters are classic characters with different versions in the DC Universe, but their original versions was created by Gardner Fox and Dennis Neville in Flash Comics #1 (January 1940) which the Hawkgirl appeared as Shiera Sanders. The Shiera's first appearance as the Golden Age Hawkgirl was in All-Star Comics #5 (June 1941) by the hands of Joe Kubert and the Legendary writer, Gardner Fox.
Their origins are a little iffy to recount because sometimes they are the reincarnation of a Prince and Princess from Ancient Egypt and another times they are beings from the planet Thanagar that have similar looking bird-people.
The Martian Manhunter was created by Joseph Samachson and Joe Certa in Detective Comics #225 during a story, "The Strange Experiment of Dr. Erdel".
In the plot, he was accidentally teleported to Earth by the Dr. Saul Erdel who died because of the shock of the encounter leaving the Martian J'onn J'onzz with imprisoned in Earth.
Using his powers to disguise his appearance, J'onn J'onzz took the identity of the deceased detective John Jones and joined the Middleton Police force, secretly using his powers to help the inhabitants of Earth.
Created by Julius Schwartz and Murphy Anderson, he debuted in Showcase #17 (November 1958) inspired by John Carter of Mars created by Edgar Rice Burroughs from the Barsoom series.
Adam Strange is an archeologist who was teleported from Earth to the planet Rann by the Zeta Beam where he discovers the iconic helmet and red suit and which he uses to pursue a superhero career on this planet where he meets the Rannian scientist named Sardath and his daughter Alanna, the future romantic interest of Strange.
Adam Strange could be a great Sci-fi adventure film. In 2009, The Hollywood Reported has published an extensive article revealing the interest of the Appian Way Productions which is helmed by Leonardo DiCaprio in the story.
The Main Man was created by Roger Slifer and Keith Giffen appearing in Omega Men #3 (June 1983) during the story Assault on Euphorix!
Lobo is the best bounty hunter in the universe and the responsible by the creation of a plague that killed the entire population of his home planet becoming the last Czarnian. His show could be easily adapted to the cinema or TV because he is a cult character with a lot of adventures as a bounty hunter. However the film or TV series must be a show with rating R or NC-17.
In September 2009, Guy Ritchie was announced by Warner Bros. as the director of the live-action adaptation but in early 2010 it was reported that Ritchie had left the project in order to pursue working on the Sherlock Holmes second film.
The last report about the film noticed that Brad Peyton would write and direct the film and Dwayne Johnson was in talks to portray Lobo. But Johnson left the project and became another villain of DC Comics, Black Adam in the Shazam's future film.