Son of wealthy entrepreneurs Thomas and Martha Wayne, who were gunned down one evening coming out of a theater as a young Bruce watched. Vowing to take revenge on the criminal underworld, he spent years abroad to hone mind and body so he could act as Gotham City's midnight vigilante, using martial arts, stealth and the imagery of a bat to intimidate his prey. He is the CEO of Wayne Industries, developer of technologies such as his customized vehicle the Batmobile), and a communicator device called the Bat-Wave. The Batman follows a 26-year-old Bruce during the adventures in his third year as Batman.
- Art Evolution: Bruce is portrayed with a long, pointy chin in the first three seasons, contrasting from his usual Lantern Jaw of Justice. In season 4, he was given a more square jawline and the eye-slits in his cowl became smaller and more angular.
- Badass Baritone: He speaks in a deeper voice while in his Batman guise.
- Badass Normal: A staple for any version of Batman. His strength, speed, stamina and pain tolerance borders on superhuman.
- Brainwashed and Crazy: In the second part of "Batgirl Begins", at the hands of Poison Ivy.
- Bruce Wayne Held Hostage: Trope Namer.
- Charles Atlas Superpower: He tosses Bane into an armored car so hard that Bane's body dents it.
- Cool Car: The Batmobile, as always, and he gets a second, even cooler one after the first was taken out by Gearhead.
- Crazy-Prepared: A staple of Batman. He has chainsaw gauntlets for crying out loud.
- Dark Is Not Evil: He wears a dark costume, but is firmly on the side of good.
- Deadpan Snarker: You'd never believe it, but this Batman gives his fare share of one-liners. To the point where it almost becomes You Fight Like a Cow. Almost. In "Topsy-Turvy", he and Joker even had a little Snark-to-Snark Combat.
- Disappointed by the Motive: Doesn't hide how utterly pathetic he views Cluemaster as, wasting his skills and intelligence to get revenge for something that was clearly his fault on a game show few people even remember.
- Easy Amnesia: Gets this in "A Dark Knight To Remember", after a rough battle with the Penguin makes him forget that he's the Batman.
- Expressive Mask: His cowl's eye slits widen or narrow with emotion.
- Good Cannot Comprehend Evil: Usually Batman understands his villains, but when he goes inside the Joker's mind, he is nearly driven insane.
- Hero with Bad Publicity: In the first two seasons, where the police consider him a Vigilante Man at best.
- Jetpack: Uses one as Batman to fight aerial villains like Firefly and Man-Bat.
- Laser-Guided Amnesia: In "A Dark Knight To Remember", thanks to a bump to the head.
- Married to the Job: Literally stated by Alfred in "Big Dummy" after Bruce is unable to make it to a date.
- Not as You Know Them: In the Season 5 premiere, it's he, and not Superman, who's more willing to team-up.
- Parental Abandonment: Yeah, okay, you all know what's coming. HIS PARENTS ARE DEEAAAAAAAD! But worse, his parents' killer was never brought to justice.
- Rich Idiot with No Day Job: Downplayed, as he's still involved with Wayne Industries and he does some aspects pretty seriously, such as working to have a dangerous toymaker fired. Though he's still seen as a dim party boy by the general public, which causes the Wayne Foundation to temporarily lose a contract to expand the children's hospital to rival GothCorp. He gets it back after it's revealed that Firefly was working for GothCorp as a corporate saboteur .
- Spell My Name with a "The": While he's occasionally referred to as "the Batman" in other media, here he's called to as that almost exclusively when mentioned in the third person.
- Thou Shalt Not Kill: Though this rule can be bent, like when he kills the undead Dracula or the robotic D.A.V.E.
- Took a Level in Badass: With each passing season. In the first season, he was still relativley inexperienced (though it was just three years and most of his prey were likely just common criminals and gang members.) With every new supervillain and such he comes across, Batman becomes stronger and fiercer.
- The Stoic: Comes with being Batman. However, this version of Batman is actually amongst the more emoting ones, and he also has a functional life as Bruce Wayne. Unlike most versions, where his "Bruce Wayne" persona is an act, this version is much more genuine.
- Where Does He Get All Those Wonderful Toys?: From Lucius Fox.
- Would Hit a Girl: You knew she was a plant, right?
- Younger and Hipper: The show's incarnation of Batman was 26 when the show began and it shows through his early behaviors. In fact, the first episode has Alfred and Batman "celebrating" that it was now three years since Bruce took on the mantle. It sets the show apart and allows for Batman to further grow and evolve.
The daughter of Gotham City Police Commissioner James Gordon, who joins Batman's war on crime during Season 3, taking on the persona "Batgirl" when patrolling the city. Unlike the comics, Batgirl joined Batman before Robin did.
- Abled in the Adaptation: Surprisingly averted. This is one of the few adaptations that show Oracle, and Oracle in a wheelchair at that.
- Action Girl: Even before becoming Batgirl she was an accomplished gymnast who sought out action.
- Adaptation Dye-Job: Barbara Gordon is typically blue-eyed, but here she has brown eyes. Her hair is also a different shade of red than the norm.
- Adaptational Early Appearance: One of the rare instances where Batgirl shows up before Robin, as well as being older than Robin.
- Age Lift: She's not so much younger than she's usually depicted (though she does look somewhat younger), but she's depicted as being older than Dick Grayson. This makes her more in line with her pre-Crisis counterpart.
- Ascended Fan Girl: Getting to meet the Batman, and becoming his sidekick.
- Bratty Half-Pint: This Batgirl is overzealous and at times fails to realize just how dangerous fighting hardened super-powered criminals is, contrasting the serious, mature personality of most other versions.
- Composite Character: She takes Harley Quinn's place is Poison Ivy's best friend in this continuity.
- Cool Big Sis: When they're not bickering, she does act as a big sister to Robin and guides him using her one year head start of being a hero.
- Demoted to Extra: In seasons 4 and 5, Batgirl's appearances are sporadic, with Robin more frequently being Batman's only sidekick at any given time. Justified in the latter season, since she is in college now.
- Expressive Mask: Much like Batman's, her eye holes widen and narrow with emotion.
- Iconic Sequel Character: Doesn't show up until season 3, but becomes a main character once she does.
- Insistent Terminology: In her origin episode, she tries to insist on being called "Batwoman", but finally gives up.
- The Lancer: She's light-hearted and cheeky to contrast Batman's serious demeanor.
- Little Miss Snarker: Again, usual for Batgirl.
- Missing Mom: Like BTAS, Barbara's mother is never seen nor mentioned.
- Older Than They Look: While she doesn't look much older than 13 or 14 (and is kind of on the short and scrawny side), she's actually a college freshman by the fifth season, which would put her around 18 or 19.
- Plucky Girl: Self-described as Batman's "plucky sidekick".
- Purple Is Powerful: Her batsuit is purple and she's Batman's primary sidekick.
- Tag Along Kid: At first, before Batman accepts her as his sidekick.
A young boy whom Bruce Wayne adopted after his circus acrobat parents were killed by a gangster named Tony Zucco. Bruce trains him in order to bring Dick into his crime fighting family, who adopts the moniker "Robin". Comes into the show in Season 4, which differs from the comics as Batgirl had already been a part of Batman's team by that point.
- Adaptation Dye-Job: His eyes are green instead of blue.
- Bratty Half-Pint: As usual for a young Robin.
- Adaptational Late Appearance: DC's "Bat-Embargo" prevented Robin from appearing on the show while Teen Titans was still airing, which is why he didn't show up until the fourth season, after Teen Titans' cancellation and Batgirl's introduction in the previous season.
- Deadpan Snarker: He rivals Alfred in this area, despite being a young boy.
- Future Badass: As Nightwing, as seen in "Artifacts".
- Kid Sidekick: Again, a trait that most Robins have.
- Kid Hero All Grown-Up: As Nightwing in "Artifacts".
- Iconic Sequel Character: Doesn't show up until season 4, but becomes the second main character once he does. His late appearance is actually due to a case of Executive Meddling as Teen Titans was using Robin throughout most of the show's run, and DC animated works only allowed one show to "hold dibs" on a character at a time.
- Parental Abandonment: Just like in the comic, his parents are killed right before he becomes Robin.
- Vocal Evolution: His voice dropped in the fifth season, due to puberty of the voice actor.
The Wayne family's loyal retainer, who raised Bruce through his traumatic childhood following the murder of his parents. He is privy to Bruce's secret identity as Batman, and maintains the Batcave whilst Bruce is in the field.
- Age Lift: This version of Alfred appears to be middle-aged rather than elderly.
- Character Development: In the early episodes, Alfred wasn't too happy with Bruce's work as the Batman, often suggesting he give it up. By the time of the season three episode "Gotham's Ultimate Criminal Mastermind", his opinion had changed considerably, to the point where he was willing to die rather then have Bruce's secret be revealed."Gotham needs the Batman more then you need a butler!"
- Cool Old Guy: In "Artifacts", though he does need a cane to get around with now.
- Deadpan Snarker: This is Alfred.
- Hidden Depths: He has a near-encyclopedic knowledge of television, which comes in handy when Batman has to take on the Cluemaster."I sometimes watch the telly when I'm dusting. I've done a lot of dusting over the years."
- The Jeeves: As usual.
- The Medic: As usual. He is even able to help Bruce recover from multiple broken bones suffered from the hands of Bane.
- Parental Substitute: He raised Bruce after his parents died.
- Secret Keeper: One of the few people to know the Batman's identity.
- Servile Snarker: As always.
- Undying Loyalty: To Batman. He might persuade his master to move on with his life, but he'll always help Bruce out, even if doing so will cost Alfred his life.
- While Rome Burns: In "The Joining, Part 2", he drinks some tea with Lucius Fox while the titular aliens destroy Gotham and ashes falls likes snow until he remembers telling Dick and Barbara to go behind Bruce's back and help him, anyway, and he and Lucius decide to try to help as well.
Bruce Wayne's business associate, and one of the few people who knows that Wayne is actually the Batman.
- Comic-Book Fantasy Casting: See "Mythology Gag".
- Mythology Gag: A big honking one to the The Dark Knight Trilogy's version of the character, being an old friend of Thomas Wayne, acting as Batman's armorer, knows Bruce is Batman, and is even modeled on Morgan Freeman.
- Remember the New Guy?: At least in regards to Batman and Alfred. Robin and Batgirl, not so much.
- Secret Keeper: For Bruce.
- Where Does He Get All Those Wonderful Toys?: The answer to where Batman gets his gear.
- While Rome Burns: In "The Joining, Part 2", he drinks some tea with Alfred while the titular aliens destroy Gotham and ashes falls likes snow until Alfred remembers telling Dick and Barbara to go behind Bruce's back and help him, anyway, and he and Alfred decide to try to help as well.
Mayor Marion Grange
Marion Grange was a close friend of Thomas Wayne, and is close to his son Bruce as well. He is the Mayor of Gotham City for the first three seasons. He is absent from Season 4, and is replaced by Hamilton Hill in Season 5.
- Adam Westing: He was voiced by the trope namer, after all.
- The Chew Toy: The Joker kidnapped him once and targeted his wife while pretending to be Batman, and his re-election saw Maxie Zeus try to take over the city after losing to Grange.
- Chuck Cunningham Syndrome: Despite winning a re-election bid in Season 3, he's not seen in Season 4 and in the Season 5 premiere, he's replaced by Hamilton Hill.note
- Gender Flip: The character is a woman in the comics, hence the Gender-Blender Name.
Commissioner James Gordon
Barbara Gordon's father and Gotham City's police commissioner. He has been a secret ally of Batman for years, before finally making his support public and allowing Batman to legally continue his vigilantism, as it's the only way to deal with Gotham's unique band of criminals.
- Age Lift: Like Alfred, he appears to be a lot younger than he is usually depicted. The younger Gordon in Batman Begins might have inspired that.
- Badass Mustache: As usual.
- The Commissioner Gordon: Obviously.
- Early-Bird Cameo: According to Jeff Matsuda, Gordon was the young officer seen in the flashback in "Traction."
- Hollywood Old: He barely looks any older during his appearance in "Artifacts", which takes place twenty years into the future.
- Out of Focus: Compared to most other Batman media, Gordon does very little in this series once introduced.
- Parental Obliviousness: The poor guy can never fully connect with his daughter due to clashing views, and years into the future, he still doesn't know about her superhero double-life. Justified, as the only time he ever got a good look at Batgirl was the first time he met her, and he was missing his glasses. Yet, he noticed Batgirl's hair color."Another redhead?"
- Reasonable Authority Figure: Another given. Becoming commissioner allowed Batman to work with the law instead of against it.
- Remember the New Guy?: Aside from the Early-Bird Cameo which some people might not have caught on to, Gordon's this. Alfred comments that "James Gordon has loomed large over [Bruce's] life." Then at the newly-installed Batsignal, Gordon says to Batman, "Thanks to all of your efforts, Batman, the time is finally right to take our alliance to the next step." Both said despite the fact that prior to "Night and the City", Gordon hadn't appeared in the present day.
Chief Angel Rojas
GCPD's jerkass police chief who mistreats his employees, and prioritizes Batman's arrest over those of the actual villains.
- Adaptational Villainy: As an expy of Harvey Bullock, he lacks Bullock's more admirable qualities and even engaged in acts that Bullock, even when he's presented as a Dirty Cop, would be appalled by.
- Asshole Victim: Almost. He was targeted by a newly-transformed-into-Clayface Ethan Bennett after how badly he treated Bennett.
- Bad Boss: Big time! He doesn't exactly treat a lot of his subordinates with any real respect. His treatment of Ethan because he supported Batman played a big role in Ethan's breakdown (culminating in Ethan's suspension when Ethan revealed it was Batman who rescued him from Joker), which in turn led to Rojas almost becoming an Asshole Victim. He also used Ellen as a hostage when he found out that she was working with Batman.
- Canon Foreigner: Created for the show.
- Chuck Cunningham Syndrome: Disappeared after Season 2. One can assume he was either fired or quit the force.
- Da Chief: He's the chief of police for the first two seasons.
- Expy: He's a Hispanic Harvey Bullock with a higher rank and no redeeming qualities.
- Fat Bastard: A self-righteous fatass who sees his word as law.
- Hate Sink: Could it be more obvious that we aren't supposed to like Rojas?
- Inspector Javert: Towards the Batman.
- Jerkass: As noted elsewhere, he's not really a good person towards everyone who disagrees with him.
- Jerk with a Heart of Jerk: Seriously, this fatass shouldn't even be in law enforcement due to his jerkassery and Skewed Priorities.
- Kick the Dog: His treatment of Ethan in the first season finale (berating and then suspending him for giving Batman credit for saving his life) and of Yin in the second season finale.
- Laser-Guided Karma: He's forced to drop his anti-Batman agenda when his new superior, Commissioner Gordon, happens to be a Batman sympathizer and establishes a working friendship with the Dark Knight.
- Latino Is Brown: Averted. Rojas is light enough to pass for Caucasian.
- The Leader: Of Gotham PD, until Commissioner Gordon came in.
- Pointy-Haired Boss: Just watch most of the episodes he's in. There's no way this idiot should've gotten as far on the force as he did. His lack of wits is highlighted at the end of "Riddled": Riddler tries to tell him that Yin is working with Batman, stating it as a very easy riddle which still leaves Rojas mystified and requiring Yin to explain it to him. Rojas then assumes that the Riddler has no idea what he's talking about.
- Race Lift: He's a Hispanic Harvey Bullock.
- Skewed Priorities: He prioritizes Batman's arrest rather than the criminals who are actually causing harm to the city.
- Ungrateful Bastard: Batman's saved Rojas and his officers quite a few times, yet he's still a jerk towards him.
Detective Ethan Bennett / Clayface I
Ethan Bennett is Bruce Wayne's childhood best friend who is unaware of Bruce's alter ego, the same one he's assigned to take down by Chief Rojas. This puts Bennett in a bad place, as he not only does not want to arrest the Batman, he believes that the Bat is helping Gotham. Unfortunately, Joker kidnapped, tortured, and exposed him to a mutagenic chemical that turns anything it touches into a clay-like substance. With both his skin and his mind melted by the Clown Prince of Crime, Bennett becomes the criminal Clayface.
- Adaptation Distillation: Clayface was a sympathetic character in Batman: The Animated Series. Here, he's an outright tragic figure.
- Adaptational Heroism: This Clayface started off as a supporting protagonist, being a cop and the best friend of Bruce Wayne. His transformation into Clayface is very tragic and at first he didn't have any evil intent other than his distressed attempts at repairing his life. His final appearance has him teaming up with Batman and Robin to take down the second Clayface.
- Anti-Villain: A definite Type II.
- The Atoner: For his rampages as Clayface.
- Bald of Awesome: Though Bald of Evil as Clayface.
- Black Best Friend: To Bruce and Ellen.
- But Not Too Black: While he's pretty dark-skinned, Ethan has blue eyes, indicating that he's part Caucasian.
- Canon Foreigner: Ethan wasn't in the comics.
- Chronic Hero Syndrome: Both a good and bad thing for him - on the one hand, it made him a valuable ally to Batman after becoming Clayface. On the other hand, once he gets his abilities, his habit of taking heroing into his own hands becomes twisted and ends up making things worse for him. But on the other other hand, his going out of his way to take in both Joker and Basil Karlo in his final appearance went a long way towards his reformation.
- Composite Character: His personality/arc has more in common with Two-Face than most Clayfaces. He also resembles Crispus Allen.
- Deadpan Snarker: Prone to making snide remarks, usually only reserved for Yin, but started spouting them at other after becoming Clayface.
- Decomposite Character: While Basil Karlo would later appear, Ethan takes over Basil's role as the original Clayface.
- Destined Bystander: Ethan Bennett was a cop and a friend of Bruce's who appeared throughout Season One before becoming Clayface.
- Driven to Villainy: By Joker at the end of season 1. He got better.
- Earn Your Happy Ending: At the end of Clayfaces he's been cured of his mutation, has reconnected with Bruce and knows that while he has a lot to make up for, he's finally come to terms with himself as Ethan Bennett once more. In Artifacts it's revealed that he re-joined the police force after being released and eventually became the new chief in 2027.
- Elemental Shapeshifter: As has become the "norm" for the Clayface character. His body is comprised of something molecularly identical to clay, letting him reshape himself into any form he wants.
- Enemy Mine: He tries to help Batman take down the Joker when he resurfaces, but Batman won't let him out of concern for his mental health. When the second Clayface appears, Batman and Robin willingly let him help them take the new guy down.
- Evil Sounds Deep: Not as Ethan himself or even as Clayface, but when he impersonated Solomon Grundy, his time disguised as Grundy has him voiced by Kevin Grevioux. Yes, that one.
- Expy: Is more or less the counterpart of Crispus Allen. And personality-wise he is Harvey Dent/Two-Face. From the long friendship with Bruce right down to calling Batman "Bats," a la Harvey from The Long Halloween. Justified, since Two-Face could not be used due to his appearance in The Dark Knight, so Ethan was likely meant to be a Suspiciously Similar Substitute.
- Eye Color Change: His eye color switches from blue to green after he becomes Clayface.
- Fallen Hero: He's a former cop.
- HeelFace Revolving Door: Starts out on the Face side, goes into the Heel side briefly, makes another attempt on the Face side briefly, slips back into the Heel side, then in Season 4 ended up back on the Face side and stays there.
- How Do I Shot Web?: At first: it doesn't take long for him to get dangerously good with his powers.
- Ink-Suit Actor: Ethan is pretty much just a blue-eyed version of his voice actor, Steve Harris.
- Jumping Off the Slippery Slope: Happens to him quite a bit, because he constantly ignores the fact that his powers make him crazy. This happens in his first appearances as Clayface, but it's especially pronounced in Meltdown, where as he uses his powers throughout the episode he jumps from wanting to capture Joker to make sure he can't hurt anyone else, to wanting to kill Joker out of revenge for what he did to him, to wanting to kill Batman because he's the only one who could bust him for trying to kill Joker, to deciding to become a full-on supervillain at Joker's suggestion because he's already trying to kill Batman anyway. By the end of it he's stealing art and ranting about "mashing anyone who gets in his way". Fortunately, his final appearance shows that he's gotten a better handle on it to the point where he mostly manages to remain himself even after using extensive use of his powers, though his sudden lashing out when presented with the antidote still shows that he doesn't quite have it completely under control.
- Knight of Cerebus: As Clayface.
- Mind Rape: Ethan suffers this at the hands of the Joker.
- Reformed, but Rejected: By everyone who didn't know him personally and by Rojas. Though Rojas was a Jerkass who had a hand in his fall. Downplayed later on where he manages to reform for good and while Bruce is clearly eager have his old friend back, he's hesitant to fully trust Ethan until he's fully cured.
- "Scooby-Doo" Hoax: Impersonates Solomon Grundy during "Grundy's Night", when the villain is nothing more than folklore in the series' continuity. However, Grundy is implied to be Real After All.
- That Man Is Dead: He tells Batman and Ellen to say goodbye to Ethan Bennett after his first shot at returning to a normal life. Subverted when he manages a HeelFace Turn later anyway.
- Token Good Teammate: Before his FaceHeel Turn, he was the only cop who supported Batman and believed that Gotham needs him. Ethan also was grateful of Batman rescuing his life and taking down criminals. On the flip side, Rojas and Yin remain ungrateful of Batman's actions and still antagonize him, even trying to unmask Batman at one point to which Ethan calls out on. In one early episode, he allows Batman to fight Bane without police interference, knowing that Rojas' officers would still be unappreciative of his efforts.
- The Unintelligible: As Clayface, his speech is garbled due to his vocal chords having melted. He becomes more intelligible once he gains more control over his powers.
- With Great Power Comes Great Insanity: Ethan's powers explicitly affect his mind the more he uses them, making him unstable, violent and (in the tie-in comics) even delusional - but they are also highly addictive and difficult to stop using after he starts: hence Bruce's insistence that he has to be cured, not just rehabilitated. Meltdown treats them as almost being like a drug. He seems to have a handle on them by "Clayfaces", as he returns to the side of good and stays there.
- Woobie, Destroyer of Worlds: His world is destroyed in the span of a single episode when the Joker kidnaps and tortures him, and he's exposed to some chemicals. He's suspended because he gives proper credit to Batman for his rescue instead of letting Rojas take it for himself, then discovers the chemicals have horribly mutated him. His first attempt at reformation also failed because of the stress of dealing with dealing who viewed him differently.
- The Worf Effect: While he initially holds his own against the new Clayface, once Basil reveals the full extent of his shape shifting he overpowers Ethan without much difficulty.
Detective Ellen Yin
Ellen Yin is a police detective who transferred from Metropolis PD to Gotham PD in the first episode. Rojas assigns her as Ethan Bennett's partner. Unlike Bennett, Yin is determined to arrest the Batman at all costs, even if Batman is ultimately better for Gotham.
- Adaptation Name Change: To accomendate the Race Lift, "Yindel" is shortened to "Yin".
- Adaptational Attractiveness: She's a younger and more attractive version of Ellen Yindel from Batman: The Dark Knight Returns, with her name, her journey from distrusting and hunting Batman to trusting and helping him, and the fact that a mention in "Artifacts" had her replacing Gordon as Commissioner.
- Action Girl: Moreso when she antagonized Batman. This is later downgraded in season two.
- Bound and Gagged: In "Strange Minds" and "Riddled".
- The Commissioner Gordon: Before Gordon himself appeared on the show, anyway, and while she was Batman's ally.
- The Chick: To Angel Rojas' Gotham PD.
- Chuck Cunningham Syndrome: Aside from a mention in "Artifacts", where it's stated she replaced Gordon as commissioner in the future, she's not seen or heard from again after Season 2, though she does appear on occasions in the tie-in comic "The Batman Strikes".
- Damsel in Distress: Gets rescued by Batman more than once after the first season. In "Strange Minds", the Joker kidnaps her and nearly blows her up. Though she at least tries to fight Joker, he takes her by surprise and wins due to that.
- Defrosting Ice Queen: In Season 2, she becomes an ally of Batman and far nicer to Bruce Wayne.
- Designated Victim: Moreso after the first season.
- Enemy Mine: Pulls one with Batman to defeat Man-Bat, who had captured Ethan Bennett.
- While based on Ellen Yindel, this version is more or less the counterpart of Renee Montoya. Which is a bit funny because Renee Montoya originated in B:TAS and became a Canon Immigrant.
- She also heavily resembles Elisa Maza transposed into the Batman universe. She even wears the same outfit. Interestingly, Greg Weisman also wrote a handful of episodes for the series.
- Fair Cop: Yin is quite attractive for a police detective.
- Faux Action Girl: She spends most of her time being saved by Batman, one step behind Batman, or getting her hand held through mysteries by Batman. A borderline case, as she is competent when the writers realize they have no other choice other than solidifying her slide into full-on Damsel in Distress. However, she is promptly Put on a Bus at the end of the second season in favor of Commissioner Gordon (thanks to the Law of Conservation of Detail) and replaced by Gordon's daughter as the only female protagonist on the series. (She did get a Shout-Out in a Season 4 episode, though she didn't actually appear; apparently twenty years down the road she becomes the Police Commissioner of Gotham.)
- HeelFace Turn: Comes to realize that the Batman is not a menace and becomes his ally in Season 2.
- Inspector Javert: In Season 1.
- Jerkass: Towards Bruce at first, until she informs Bruce that she knows he's not a stuck-up playboy after all.
- Jerk with a Heart of Gold: She acts cold and dismissive in the first season but it is shown in the finale that she cares deeply for Ethan and admits that Gotham needs the Batman, becoming his ally in the process.
- My God, What Have I Done?: Yin sheds a Single Tear when she figures out Ethan is Clayface, having remembered the fact that she treated him like a criminal earlier in the season 1 finale without so much as an attempt to recognize him which permanently puts an end to their partnership.
- Number Two: To Chief Rojas especially in the first season.
- Race Lift: Ellen Yindel was a redheaded white woman. This version is Asian-American.
- Secret Keeper: Subverted in "Fire & Ice". Ellen tells Bruce she figured out his secret. The secret is that Bruce wasn't a "spoiled, arrogant playboy" he made himself out to be.
- Sexy Soaked Shirt: In the series premiere, she gets this scene by running in the rain and swimming across a river to get to Arkham Asylum.
- To Be Lawful or Good: Solidly Lawful in season 1, wanting to arrest Batman for being a vigilante. She's changed her mind.
- Unwilling Suspension: In "Riddled" to some extent.
- Ungrateful Bitch: She continues to act like a jerk towards Batman after he rescues her a few times. This is later averted in season 2.
- What Happened to the Mouse?: She abruptly disappears by the end of Season 2, and her fate is left in the dark.
Detective Cash Tankinson
A bumbling and overconfident police detective, who briefly serves as Yin's new partner after Ethan Bennett becomes Clayface. This alliance doesn't last long, but he still shows up on occasion when supervillains appear.
- Basement-Dweller: He mentions living with his grandmother.
- Casanova Wannabe: Believes he can help Bruce Wayne be more successful with the ladies despite the fact that Bruce is a billionaire playboy and Cash is well, Cash.
- Cowboy Cop: Tries his best to be one, but is instead a bumbling idiot.
- Jerk with a Heart of Gold: He's a jerk, but views Yin and Bruce as friends on some level he has trouble admitting.
- I Work Alone: Says this despite working with both Yin and Batman.
- Non-Action Guy: But he believes he's an Action Hero.
- Small Name, Big Ego: In spades. He actually thinks he can take on Joker alone and win.
- Spell My Name with an "S": It's not clear whether his last name is spelled "Tankinson" or "Tankenson".
- Sunglasses at Night: Rarely takes them off, earning him the nickname "Detective Shades" by Joker.
- Too Dumb to Live: He tries to take on the Joker and fully believes the situation is completely under his control. Yeah.
- Third-Person Person: Often speaks like this.
A shapeshifting alien from the planet Mars, and the last of his people. Living on Earth under the guise of a human detective, he warns Batman about the Joining's plans to attack their world. After thwarting the alien invasion, Batman and Martian Manhunter recruit other superheroes to form the Justice League.
- Brought Down to Normal: By Hugo Strange and The Joining in "Lost Heroes". Fortunately, it is only temporary.
- Bald of Awesome: Of course he's a bald hero.
- Casting Gag: This is not the first time Dorian Harewood voiced a Martian hero. Harewood previously voiced Modo, one of the titular characters in Biker Mice from Mars.
- Combo Platter Powers: In addition to the normal set of flight, shapeshifting, telepathy, super strength and speed, and intangibility/nigh invulnerability, this incarnation also has telekinesis.
- Human Disguise: J'onn J'onzz pretends to be a detective named John Jones as his civilian identity.
- Last of His Kind: It's generally believed that the Joining killed the rest of the Martians in this continuity.
- Mind over Matter: This version of J'onn has telekinesis.
- Voluntary Shapeshifting: As usual, he can change his form into just about anyone or anything he can think of.
- Weaksauce Weakness: J'onn seems to have a psychological fear of fire. Hence the Joining could point an armed (but not discharged) flamethrower at the guy and make him back off.
An alien from the destroyed planet of Krypton, and its only survivor. Raised on Earth by a human couple in Smallville, Kansas, he currently resides in Gotham's sister city of Metropolis, which he protects with his vast array of superhuman abilities. Despite his initial reluctance, he teams up with Batman and eventually joins the Justice League.
- Brought Down to Normal: By Hugo Strange and The Joining in "Lost Heroes". Fortunately, it is only temporary.
- The Cape: Trope Namer.
- Clark Kenting: Well, duh.
- Flying Brick: Of course.
- Human Alien: Nautrally.
- Intrepid Reporter: In true form, he's a reporter.
- I Work Alone: Initially he prefers to work alone, so he's reluctant to team up with other heroes until later on.
- Not as You Know Them: In the Season 5 premiere, it's he, and not Batman, who's more reluctant to team-up.
- Red Eyes, Take Warning: When he's using his heat vision. Under mind control spores laced with Kryptonite, it's more like Green Eyes Take Warning.
- Super Strength: This is true.
A wealthy businessman from Star City, who decided to become a costumed, non-superpowered vigilante (coincidentally, he's much like Bruce Wayne). He fights crime using his superb archery skills, armed with a bow and a wide variety of different arrows.
- Badass Beard: Of course.
- Badass Normal: As tradition.
- Color Character: Green Arrow.
- Follow the Leader: An Invoked Trope during the first time he teams up with Batman. Ollie mentions being inspired by Bruce's stuff at the end of the adventure. His appearance in the finale has him using the Arrowplane.
- Trick Arrow: As usual.
A forensic scientist from Central City, who gained the ability to move at incredibly fast speeds.
- Brought Down to Normal: By Hugo Strange and The Joining in "Lost Heroes". Fortunately, it is only temporary.
- Big Eater: Hey, running that fast requires a high metabolism.
- Casting Gag: Charlie Schlatter voiced the Flash Superman: The Animated Series, though that Flash was Wally, whereas this one is, according to Word of God, Barry.
- Composite Character: According to Alan Burnett, he's Barry Allen. That said, he does have a personality more akin to Wally West or Bart Allen.
- Everyone Calls Him "Barkeep": He was only called "Flash" in his appearances and his real name was revealed in a news article about the show.
- Personality Powers: Played straight, given his personality is more like Wally West or Bart Allen than the comics' version of Barry Allen.
- Super Speed: Naturally.
A human pilot and member of the Green Lantern Corps, an intergalactic peacekeeping force. Like other Green Lanterns, Jordan is armed with a ring that allows him to materialize objects made of green energy.
- Arch-Enemy: His is Sinestro.
- Color Character: Green Lantern.
- Green Lantern Ring: Trope Namer.
- Heroic Willpower: As usual.
- Space Police: Of course.
- Weaksauce Weakness: His ring has problems with the color yellow, something both Sinestro and the Joining exploit. Batman has backup plans in case the Justice League go rogue and Batman also would have no problem exploiting this weakness. It ends up helping beat the Joining, when they steal the Justice League's powers.
An alien policeman from the planet Thanagar, equipped with Nth metal technology that gives him the ability to fly, and he fights with a mace.
- Everyone Calls Him "Barkeep": He was never addressed by his real name, but the fact he comments about fighting criminals on two worlds and the comment about the Batcave resembling Thanagar Police Headquarters confirm he's Katar Hol.
- Space Police: As usual.