When Kara Zor-El was in her late teens (18 years old), Krypton fell under attack by Brainiac’s forces. Her scientist mother, Alura In-Ze, saved her from Brainiac’s betas and warned her that Krypton was set to explode as a result of the former intentionally destabilizing its core. Regardless, Kara’s family intended to send her and her infant cousin, Kal-El into space to ensure their survival. Once Kara boarded her rocket, Alura reminded her that a daughter of the House of El never surrenders, shortly before being killed by Brainiac’s betas. As both shuttles reached outer space, Kara’s shuttle was struck by debris, causing it to veer off course, causing her to be separated from Kal-El, and her shuttle had put her in a state of suspended animation. Several decades later, Black Adam found her shuttle as it reached Earth. Black Adam brought her to Kahndaq where she was indoctrinated to believe that Superman was the world’s greatest champion, and the insurgents were ill-intentioned conspirators that deposed her cousin from his self-proclaimed position as High Councilor 5 years earlier. Having seemingly indoctrinated her, Black Adam and Damian Wayne sent her on a mission to rescue Wonder Woman from high security imprisonment on Themyscira. Though she found herself unable to lie, Supergirl’s power and mere presence spurred a group of Amazon conspirators to rebel and return Wonder Woman to her supposedly rightful place. A war broke out between the rebels and the loyalists, but Kara was able to rescue Wonder Woman, who, along with Kara and the rebel amazons would make their escape on a boat that the former single-handedly pulled away from Themyscira and towards safety. Sometime after, the events of Injustice 2 would take place. As a child, Kara Zor-El witnessed the devastation of Krypton before she was sent to Earth on a mission to protect her infant cousin, Kal-El. Arriving on Earth decades too late, she discovered that grown-up Kal has been imprisoned due to his hideous actions as the High Councilor of the Regime over the last five years. Still determined to protect her family and its legacy, Kara will fight her cousin’s enemies as Supergirl. Before the destruction of her home planet, Kara was there during the events involving the invasion of the Coluan named Brainiac. She evaded capture with the aid of her mother, Alura In-Ze. Alura would send Kara to Earth in hopes of teaching her younger cousin Kal-El. Launching in a rocket, Kara would be flung off course, caused by Krypton's destruction. This resulted in her entering hypersleep for the next 30 years, while Kal-El arrived on Earth. Sometime after that, Black Adam had found her ship and brought it to Kahndaq. Later, Kara and Black Adam rescued an imprisoned Wonder Woman from Themyscira. While within the safety of the mystical city, Kara would find herself told not to make her presence known by Wonder Woman or Black Adam, as they planned on breaking Superman from his prison cell. Despite this, she was more rebellious and wished to explore her newfound powers while on Earth, and use them to help the people. Kara also shows no fear for Batman, but remains frustrated that she is unable to use her powers to help Kal-El. Later, Kara watches Wonder Woman and Black Adam observing Brainiac's invasion in a magic crystal. Kara recognizes the ship and begins to panic, which is noticed by Wonder Woman. When she asks who the invader is, Kara only states that they need to get Kal-El immediately. Kara is part of Black Adam and Wonder Woman's rescue attempt at Stryker's Island. While the two run interference with the prison guards, Kara frees Cyborg and Damian and gives his gear to the latter. When Superman questions Cyborg over his rescuer, Kara affirms it and meets her cousin for the first time. He immediately recognizes her and is visibly shocked over the survival of another Kryptonian. Kara asks how Kal recognized her, and Superman reveals that his parents stored an image of her on his ship and knows her role as his protector. Kara apologizes for being "a few decades late" and explains the reasons for her absence. When Kal expresses his doubts about never seeing another Kryptonian, she tells him that his parents loved him so much. When the facility begins to shake, Kara asks Cyborg how long until Superman is free, which he states five minutes, and goes to help Wonder Woman. Eventually, Kara returns and restrains Firestorm and warns him to stay away from Kal. However, Firestorm begins to summon kryptonite-fueled fire, which begins to weaken Kara. She gasps out that Firestorm is just as bad as Wonder Woman and Black Adam had said. Firestorm offers to stop, but only if she surrenders. Kara then declares that "Kryptonians never surrender" and proceeds to punch him, stopping him from weakening her any further. She then declares that they are freeing Kal-El and fights Blue Beetle or Firestorm (even going as far as to condemn the latter for using kryptonite-fueled fire, deciding that he had crossed the line just by using kryptonite in the first place), depending on the player, but is defeated. Later, Kara recovers enough to stand with the other Regime members against Blue Beetle and Firestorm. She is later present when Firestorm begins to gather enough energy to destroy the facility, as well as Batman's intervention. She later stands in the way of Batman and calls herself "Superman's overprotective cousin" when Batman questions her identity. Kara was present as the heroes made plans to repel Brainiac's invasion, providing insight into what had happened from her experience on Krypton. Later, she and Diana would fight his forces in Metropolis, though Kara saw civilians cowering at their presence. After being incapacitated by Cheetah, Kara was saved by Diana, who almost killed Minerva. When Harley Quinn intervened, Diana stabbed her through the torso, causing Kara to realize the Amazonian's true colors. After cauterizing Quinn's wounds with her heat vision, she battled and defeated Diana and went to speak to Superman in the Fortress of Solitude. Upon confronting him on Diana's actions, Kara learnt the truth about her cousin's fall from grace and his murder of the Joker, along with many other criminals and former allies. Disgusted, she tried to leave, battling and defeating both Nightwing and Black Adam. She is later seen at the desolate city. Kara thought that Batman would be satisfied that Superman is gone after Brainiac thought to have destroyed him, given what Clark has become after Metropolis, but Bruce tells her that he will miss him as well, because, despite the fact that Clark came a mass-murdering lunatic after Joker tricked him into taking everything he had, he was still his friend and he missed him ever since. When Diana arrived and blamed Bruce for Kal's near-death and the cities being captured, Kara slaps Diana in the shoulder, telling her that millions of people are aboard Brainiac's ship that that they've got to save them, despite Diana telling her that they won't do it with Batman or without Superman. After Brainiac tells them about his plan, Kara concedes to going to Brainiac but Batman refuses, saying that they have to shut down the shields. With Batman's help she gets aboard the ship. She sees the captured (remaining) Kryptonians in Brainiac's collection, pleading to Batman that they have to help them. a battle ensues following the defeat of Brainiac, eventually leading to the defeat of Batman and his allies. Superman confronts Kara in hopes of getting her on his side, but after her refusal and defeat, she is captured and placed in the same red sun cell her cousin was in prior. She is to remain there until she accepts Superman's offer. She shows visible shock when she learns that Superman has killed Brainiac and bonded with his ship and is absolutely horrified at Batman's forced conversion to Superman's side. Superman then ominously explained that he could just as easily force her to comply with his rule, before asking her “What’s it going to be?”. After Supergirl refused to join Superman one last time, the latter disappointedly attempted banished Kara to the Phantom Zone, effectively disowning her. Only to watch as the world around them started to end but Kara was pulled from the dying world before it blew up, the same way Krypton blew up. Born on the planet Krypton, before Brainiac's invasion and the planet's destruction, Kara had no special powers under the effects of the natural red sun. When she was found, however, and brought to Earth, she had found herself absorbing the effects of its yellow sun. As a result, she gained abilities, like her cousin before her. Kara's dense molecular structure and bio-electric aura allow her to withstand damage that would normally kill a human being. This also extends to bullets, lasers, and even the effects of space. Like her cousin, she can also move at speeds exceeding the world's fastest fighter jets and apply the same speed to reach the sun within seconds. Kara's dense structure also gives her the ability to lift and punch things made of metals and even inflict serious injury to lower or equal strength beings. Since Krypton's gravity was far greater, Kara's body gives her the ability to propel herself into the air, allowing her to fly anywhere in the world. Should her body also receive an injury while on Earth, her body can heal within mere seconds. Her other abilities also include taking in larger quantities of air and expel it with hurricane-force winds, and even producing the same kind of force when freezing. Another power she has is the ability to intake solar energy and dispense red beams of intense heat from her eyes, which can cauterize wounds, melt metals and even blast holes through concrete. Despite having gained the same abilities as her cousin did on planet Earth, Kara is not invincible. Like her cousin, Kara is susceptible to the effects of kryptonite, which painfully weakens her and will kill her after prolonged exposure. Magic is also another Achilles' Heel for Kara, as the Kryptonian dense molecular structure and bio-electric aura cannot naturally defend her against it.

Guest characters

Superman, birth name Kal-El and adopted name Clark Kent, was a Kryptonian and the premiere superhero on Earth, often considered the first among equals of the founding members of the Justice League. In his civilian life, he is employed as a professional reporter and resides in Metropolis. Kal-El is a tall, wide and very muscular man with a Herculean physique. He has fair skin, black eyes (blue in Static Shock) and short black hair with a curl in the front. As Superman, he wears a blue suit with a yellow emblem, a red border and the letter "S" inside, which is the sigil of his family as well as the Kryptonian symbol for, 'hope.' He also dons red cape, boots, and briefs with a yellow belt to go with the suit. As Clark Kent, to hide his superhero identity, he wears framed glasses and occasionally wears a business suit.

Bruce Wayne, also known as Batman, is one of the main protagonists of the DC Animated Universe. He is a multi-billionaire who became a crime-fighting vigilante after witnessing the murder of his parents. Shortly after beginning his war on crime, Batman took in an orphaned boy named Grayson as his crime-fighting partner, who eventually quit the team to lead his own life as the super-hero Nightwing; Batman then replaced him as Robin with Tim Drake. He also fought alongside Barbara Gordon, also known as Batgirl. He is also one of the founding members of the Justice League. He fought crime for decades until old age and declining health forced him to retire. Years later, he passed on the mantle of Batman to Terry McGinnis. Due to his prominence in the franchise, being the only character to appear in every single show and movie, he can be considered the overall main protagonist of the DC Animated Universe. He was famously voiced by the late Kevin Conroy, marking his first time playing the character. He would reprise the role several times, including in the Arkhamverse and Injustice video game series and several DC Animated films. He was also voiced by Josh Hutcherson as a younger version (who also played Sean Anderson from The Journey films, Peeta Mellark from The Hunger Games and Nod from Epic) Kyle Alcazar in Justice League Unlimited and Mike Schmidt from the live-action FNAF movie. Batman is a man in his mid 30s with a square chin, black hair, fair skin, blue eyes and a powerful, muscular physique. As Batman he wears the typical Batman costume with the cape, cowl and bat symbol on the chest. He is never seen without his utility belt. His costume changes slightly as the art style changed, such as the yellow surrounding the bat logo vanishing and the ears becoming longer in Justice League. His final suit in Batman Beyond was a high tech black and red skintight suit with rocket boots, arm wings, no cape and no utility belt, as the suit itself provided tools. As Bruce Wayne, he wore a brown suit, light brown pants, a yellow shirt and a black tie. He also wore a black suit and pants, a white shirt and a red tie. Casually he wore a black sweater and grey pants. As an old man, he wore a black jacket, a grey shirt and black pants. He has grown physically weaker as a result of old age (even though he is still formidable physically) and also uses a cane both as a weapon and to assist in walking.

Diana Prince, aka Wonder Woman is one of the main protagonists of the DC Animated Universe, and a founding member of the Justice League. She started life as a clay sculpture. Her mother, Hippolyta, Queen of the Amazons, breathed life into her so that she might have a child of her own. She later realized that she was not sculpted by her mother alone, but with her mother's lover Hades as well. She was given a chance to verify this information but turned it down because she had no doubt in her mind that she was born and raised by Hippolyta. She was voiced by Susan Eisenberg. Wonder Woman is an attractive and very beautiful woman with jet black hair, blue eyes, prominent cheek bones and a muscular physique with a curvaceous figure. She wears her tiara and her metal arm bracelets. She wears a half-colored leotard: the top half is red with a golden stylized W with a belt, and the bottom half is blue with stars and silver pads and red boots with white stripes. Her outfit was conceived long before the show by William Marsden, inventor of the lie-detector and an out-spoken feminist. Wonder Woman's outfit has been reinvented for many different adaptations, the DC Animated Universe, version, tries to blend the kitschy 50s patriotism of her outfit with a more Greek look, while keeping most of the color scheme.

The Flash, real name Wally West, was a young, popular superhero from Central City and a founding member of the Justice League. Apart from his vast speed powers, Wally's most significant quality was his approachability, that many said made him the "heart of the Justice League". In his civilian life, Wally works as a forensic scientist with the Central City Police Department. The Flash has a lean, athletic build with stylized, simplified animated features typical of the Bruce Timm art style and wears a Red suit with a yellow lightning bolt on the inside of a white circle on his chest.

John Stewart was an officer of the Green Lantern Corps, formerly a United States Marine, and a founding member of the Justice League. He is also the father of future JLU member Warhawk. He was recruited by the Green Lantern Corps and trained for ten years, before returning shortly after Abin Sur's death. He became a founding member of the Justice League. He is also the father of future JLU member Warhawk. He is voiced by Phil LaMarr, who also voiced Static who's also in the DC Animated Universe, Samurai Jack in his namesake show, Hermes Conrad in Futurama, Wilt in Foster's Home For Imaginary Friends, Kit Fisto and Bail Organa in Star Wars: The Clone Wars, Osmosis Jones in Ozzy & Drix, Kotal Kahn in Mortal Kombat, Chris Jacobs in Mercenaries, Philly Phil in Class of 3000, Spike Bulldog in Tom and Jerry, Rick Grimes in The Walking Dead motion comic, Ramza Beoulve in Final Fantasy Tactics, and Kevin Washington in Metal Gear Rising: Revengenace.

J'onn J'onzz, also known in his Earth name as John Jones and in his superhero alias as the Martian Manhunter, is one of the main protagonists of the DC Animated Universe. He was a founding member of the Justice League. He was the only member who constantly lived in the Watchtower; in one instance, he had been in space for 2 years without going back to Earth. He was originally a resident of Mars and has many inhuman properties and abilities, which he uses to help the heroes of Earth. He was voiced by Carl Lumbly, who also portrays Isaiah Bradley in the Marvel Cinematic Universe since 2021. Martian Manhunter (J'onn J'onzz) is depicted with a distinct, streamlined and classic Bruce Timm art-style design.

Shayera Hol, formerly known to Earth as Hawkgirl, is one of the main protagonists of the DC Animated Universe. She is a Thangarian member of the titiular group of superheroes who have the shared mission to fight against bad guys as much as possible. Later on, it's revealed that Hawkgirl had a mission behind the group to pursue planet Earth with her fellow Thangarians, which strained her relationship with the Justice League and forced herself to split from them. However, she soon decided to turn against the Thangarian goal and return to the Justice League, restoring her own moral sense once again. She is voiced by Maria Canals-Barrera. , Hawkgirl (Shayera Hol) has a distinct athletic, muscular build with red hair, green eyes, and large, biological feathered wings attached directly to her back.

Kara In-Ze aka Supergirl (Earth 12) is a supporting character in the DC Animated Universe. She was the last Argoan and Superman's adoptive cousin. She was voiced by Nicholle Tom. Supergirl (Kara In-Ze) is a fair-skinned young teenage girl with blue eyes and short-to-medium blonde hair. she wears a white, midriff-baring cropped t-shirt with a red "S" shield emblem on the chest, a blue miniskirt, red gloves and a matching red cape, and shorter lace-up or Doc Marten-style chunky red boots rather than traditional high boot

Barbara Gordon was the daughter of Gotham City Police Commissioner, James Gordon. She took on the mantle of Batgirl, Batman's partner and protegé for many years. Later in life, after leaving behind her costumed persona, Barbara followed in her father's footsteps by becoming the Commissioner of the Gotham Police Department herself. Batgirl is portrayed as a slender and agile figure with a striking visual design. She She has shoulder-length orange hair and blue eyes. Her build is athletic and graceful, reflecting her skills in acrobatics and stealth. Here wears a black bodysuit with gold accessories and a blue cape with a yellow lining as Batgirl.