Major Batman characters will never appear in a live-action movie.

Since Batman’s first publishing in Detective Comics #27 in 1939, the fabled mythos of the caped crusader have marched for more than seventy-five years. Designed by Bob Kane and Bill Finger, Batman has become among the most well-known superheroes of all time and a keystone of the DC universe. Batman’s tale has grown along with his laundry list of adversaries in his rogues’ gallery; he has over the years defined what a dark hero ought to be.
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Having made numerous live-action appearances and whole trilogies, the best detective in the world has even debuted outside of the comic book universe. On the huge list of people that fit Batman’s universe, though, many have never shown up on film next to him. Major Batman characters that have never been shown in a live-action film are listed here.

Aaron Cash One-Handed Protector of Arkham Asylum

Though Aaron Cash is not a prominent character in terms of ability, his presence in Gotham City has some weight. Cash initially surfaced in the mini-series Living Hell at Arkham Asylum, when he began as a security guard assigned to oversee the most deranged offenders in Gotham.

Cash resurfaced in the Batman: Arkham Asylum computer game, where his character performed a fair part. Although Arkham Asylum has not been thoroughly investigated, Cash should help Batman limit the terror and the future generation of Batman films should delve deeper into the craziness of the city.

Clayface, The Monster With Many Faces

Among the most lethal and sad attackers prowling Gotham City’s decaying streets is Clayface. Though there are several iterations, the most famous is perhaps Basil Karlo, voiced by Ron Pearlman initially shown in the comics in Detective Comics #40 and even acted as a prominent villain in Batman: The Animated Series.

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Actor Clayface was down on his luck and turned into a shapeless mass following an accident during medical treatment. Losing his sense of self, Karlo went to a life of crime and collapsed under the weight of his mental illness. One of the most unusual obstacles Batman would have to deal with, Clayface would make a perfect villain since it would let him highlight his detective abilities.

Hush: Gotham’s Most Dangerous Man

Among Batman’s most fearsome enemies, Hush is one of the few that know his actual name. Growing up Bruce Wayne had few friends, but Thomas Elliot was always one he could count on. Sadly, Elliot’s gentle manner covered his more sinister side.
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Having tried to kill his parents for their wealth, Thomas Wayne’s intervention derailed his scheme and drove him insane. Grudgingly, Elliot changed his name to “Hush” and hatched a plan to rip Bruce’s life apart from the inside out in order for payback. Nothing off the pages of DC Comics; Hush initially surfaced in the graphic novel of his namesake and has made innumerable appearances since.

Jeremiah Arkham: The Insanity of Gotham’s Keeper

Essential in Gotham City’s history and among the foundations keeping Arkham Asylum operational is Jeremiah Arkham. Originally shown in Detective Comics #593, Jeremiah is the sharp and almost cryptid-like leader of the asylum contaminated by the craziness of his victims.

Over many meetings, Jeremiah seeks to seize control of the city, eliminate Batman, and even briefly don the Black Mask. Jeremiah Arkham’s multifarious nature would make a perfect villain for a forthcoming Batman film, guiding the narrative further into the madhouse of Arkham Asylum.

Ace: The Batman’s Best Friend

Batman trusts not many people in his life apart from his immediate family members. Still, the four-legged bat-hound is a beloved part of the bat family and has shown time and again that he is as consistent as Alfred himself.
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Originally showing up in Batman #92, Ace made numerous cameos in other mediums including DC League of Superpets and Batman Beyond. Sadly, Batman and Ace’s friendship has not yet had the live-action adaption both of them so deserve. Ace gets his turn in the limelight in James Gunn’s developing DC movie hopefully in some sort or form.

Gordon, Barbra
The Dedicated Gotham Defender

Among the most important and long-standing members of the bat family is Barbara Gordon. Participating in vigilantism of her own will, she evolved into the best of the best when she emerged as Batgirl. Originally appearing in Detective Comics #359, Barbara Gordon has accumulated her own success jumping from Gotham rooftops and even traveling to become a brilliant investigator like her father, Commissioner Gordon.

Barbara starred in several animated movies and television shows; she was even set to make her first live-action debut in a stand-alone movie. Sadly, the movie starring Leslie Grace was called off soon after filming started.

Damian Wayne, The Son of Batman

Being the direct descendent of Bruce Wayne through procreation with Talia Al’ghul, Damian Wayne is among the newest members of the bat family. In his initial visit to Batman: Son of the Demon, Damian surprised everyone—including the fans—by showing up there.
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Damian assumed the mantle of Robin as his birthright; he was an arrogant but lethal man. Damian has dedicated himself since then to studying his father’s idealistic ideas and challenging the League of Shadows’ grooming. Damian would be a fantastic addition to forthcoming live-action films and has become the ideal piece to fit the Batman jigsaw.

Red hood
The Falling Hero Turned Anti-hero

When debating the mythos of Batman, Jason Todd may be the most divisive moniker. Originally Dick Grayson’s replacement following a painful emotional parting between the two, Jason Todd emerged as the new Robin and embraced his bright future.

Sadly, a sequence of choices marked one of the worst periods in Batman’s history and brought the young man to death under the Joker’s fingers. Reemerging as Batman’s lost friend Red Hood would be Jason Todd, returned from the grave. Given Jason Todd’s enormous weight in the whole DC universe, Under the Hood would be amazing to see developed into a live-action movie.