Recurring Batman Enemies
Joker is a maniacal Monster Clown who emerged in Gotham following Batman's arrest of the crime boss Rupert Thorne. His crimes are completely random, often with no motive other than just an excuse to cause chaos for his own sick amusement; but the one thing they do have in common is that they often result in paralyzed victims sporting the same ghastly grin as himself.
- Adaptational Badass: He is actually quite good in a hand-to-hand fight compared to his original incarnation, though his direct fighting traits get somewhat minimized as the series progresses.
- Adaptational Curves: He's notably more muscular than normal, owing to his ape-like design.
- Adaptational Nice Guy: In keeping with this version being more affable than most, the Joker's abusive traits are toned down considerably. He still lashes out at Harley Quinn when sufficiently agitated, though, and doesn't bother helping her when she's trapped in a burning building.
- Adaptational Ugliness: One of the creepiest and most inhuman versions of the Clown Prince of Crime to appear in animation: dreadlock-style hair, red eyes, large, jagged yellow teeth that slot together, blue tongue and fingernails, and large body proportions.
- Arch-Enemy: To Batman. Joker even refers to them as being "two sides of the same coin".
- Art Evolution: Aside from the tie-dyed straitjacket being swapped out for his trademark purple and orange suit, "Topsy-Turvy" adds black rings around Joker's eyes, his lips are a darker shade of red, his teeth are more detailed and his hair animations are noticeably less fluid.
- Asshole Victim: As with Rojas, he almost became one. And by the same person (Ethan Bennett/Clayface I), no less. And like Rojas, he deserved Ethan's enmity towards him, being the one who more or less made him Clayface.
- Ax-Crazy: As is standard of the Joker. His first appearance shows him breaking into an asylum for the criminally insane and releasing the inmates, then trying to dose the entire town with his "Joker Gas" simply For the Evulz.
- Bad Boss: Doesn't really treat Punch and Judy, his two most recurring henchmen, that nicely and leaves them to get arrested so he won't miss his favorite TV show. He's also still somewhat abusive towards Harley once she's introduced.
- Berserk Button: Never try to terrorize or rule over Gotham while he's around. Only he's allowed to do that.
- Big Bad: The closest this series gets to one, as he's the most reoccurring villain and is responsible for several major events like the creation of Clayface.
- The Corrupter: He functions as this to Harley Quinn and Donnie, and also to Ethan Bennett as part of the Mind Rape that turns him into Clayface and then to Basil Karlo when the Joker leads Karlo to realize that he still has the powers he gained as the second Clayface.
- Does Not Like Shoes: As part of his feral characterization, he usually goes around barefoot. Even in later appearances where he starts dressing and acting more like his prior cartoon depiction, he still doesn't usually wear shoes.
- Does Not Like Spam: "Bagley, how many times do I have to tell you? I hate macaroni and cheese!"
- Dude, Where's My Respect?: In season one, when Joker learns that Gotham P.D. considers Batman (a crime-fighting vigilante) more of a threat than him (Gotham's worst criminal), he's properly outraged.
- Early Installment Character-Design Difference: Promotional materials and the first episode had him in a stylized straitjacket. Later episodes instead use his trademark tuxedo. He wears the straitjacket one more time in "Meltdown".
- Electric Joybuzzer Accidentally kills himself with one. Well, almost.
- Evil Laugh: Perhaps one of the most distinctive ones yet.
- Evil Sounds Deep: This Joker has a considerably lower voice than most versions, due to being voiced by Kevin Michael Richardson. It gets even deeper when he uses Bane's Venom in "Brawn".
- Evil Versus Oblivion: In "The Joining Part 2", he and the other Gotham villains join forces with the police to defend Gotham from the alien invasion, with the Joker declaring terrorizing Gotham was his job.
- Extendo Boxing Glove: The show adds one of these to Joker's usual array of weapons.
- Faux Affably Evil: No matter how affable he can sometimes feign being, he's truly an evil man.
- Fighting Clown: More so than any Joker before him, this Joker is clearly a trained fighter, seemingly using Monkey-style kung fu — lots of flipping, rolling around, leaping back and forth, and sudden, unpredictable strikes. Because of the divided reaction this elicited, this trait got dialed back in subsequent appearances, especially after the first season.
- For the Evulz: Everything he does is solely for his own sadistic amusement.
- From Nobody to Nightmare: We don't get the full story, but in this version Joker was apparently a boring office drone who dreamed of making people laugh before that unfortunate chemical bath.
- Handy Feet: This is why he doesn't like to wear shoes; he's very good at using his feet as makeshift hands.
- The Hyena: Always laughing at something. Guy once tried to get a couple of Hyenas as pets, as a matter of fact.
- Improbable Hairstyle: His flocked, almost dreadlock-styled wild hair, seemingly fashioned to resemble a jester hat.
- Institutional Apparel: Sports a yellow and purple straitjacket in his first few appearances and "Meltdown".
- Knight Templar: At one point he decides to impersonate Batman and mock his methods. Though the crimes his victims commit are minor such as speeding, his methods are anything but.
- Lack of Empathy: As usual for the Joker.
- Large Ham: As usual.
- Laughing Mad: Well he is the Joker after all.
- Lawful Stupid: During his attempt to become Batman, in which he hounds a jaywalker, a grandmother who accidentally left a turn signal on for three blocks, three cops who were driving above the speed limit during a car chase, a lady who brought eleven items to a ten-item checkout lane, and two girls making "graffiti" while playing with sidewalk chalk.
- Lightning Bruiser: Very fast, very agile, and very good at hitting people.
- Maniac Monkeys: Has a very "feral ape" motif in his earliest appearances, especially the first episode. He climbs and clambers all over the place, uses his feet and hands interchangeably, monkey-like fighting style, he even tends to adopt a Primal Stance. He's very reminiscent of a crazy Tarzan in clown makeup.
- Mad Artist: Carries shades of this, depending on the episode - in "The Rubberface of Comedy", for instance, he uses his "Joker Putty" to re-sculpt his own face onto a statue, and wears a beret during the process!
- Mind Rape: Does this to an already under stress Ethan Bennett solely to make the police pay more attention to him than the Batman.
- Monster Clown: Arguably more monster than clown, with his very "feral" portrayal — Primal Stance, ape-like fighting style, perpetually bare and ambidextrous feet.
- No Name Given: Like most versions of the character, his real name is never stated.
- The Only One Allowed to Defeat You: Toward Batman; to the point he personally takes care of Wrath and Scorn so they won't "take away the fun" by revealing Batman's identity.
- Red Eyes, Take Warning: He sports them, and they only add to his maniacal nature.
- The Rival: To Penguin, as they constantly feud over who is Gotham's number one baddie.
- Scary Teeth: They're jigsaw-shaped, visibly slotting together. Not conventionally scary, but the effect is quite disturbing.
- Slasher Smile: He wouldn't be Joker without this.
- The Sociopath: This version of the Joker does not play coy, blatantly attacking whoever he can and will, subtlety be damned.
- Spell My Name with a "The": Averted. Unlike most versions, he's usually just called "Joker".
- Would Hurt a Child:
- Tried to dump Prank, his would-be Kid Sidekick, into the vat of chemicals that created him, fully aware that even he didn't know what would happen to the kid.
- While masquerading as Batman, he also tries to use Joker gas on two elementary school-aged girls because they drew on the sidewalk. Batman stops him though.
Descended from a once-wealthy aristocratic family, Oswald Cobblepot resorted to crime in order to restore the Cobblepot name to its former wealth and glory, by studying martial arts in the Orient, building umbrellas that function as high-tech gadgets and weapons, and training birds to perform burglaries for him.
- Acrofatic: He Took a Level in Badass compared to his other incarnations; but like with Joker this was downplayed in later episodes due to the controversy this caused. It was based on Asian films where various heavy characters can pull similar feats.
- Adaptational Badass: Much more adept in hand-to-hand combat than his other incarnations.
- Adaptational Comic Relief: Yet, at the same time, he gives off a Harmless Villain impression far more often than other versions. More than once, his schemes only work out of coincidence (the sonic device happens to work on Man-Bat; stumbling upon Green Lantern's ring, etc.)
- Adaptational Jerkass: Much ruder and cruder than the more gentlemanly comics incarnation. This Penguin is also insane and imprisoned in Arkham Asylum, while comics Penguin is perfectly sane.
- Adaptational Ugliness: While the Penguin was never good-looking in the comics, this one shares his Batman Returns counterpart's deformities and even has jagged teeth.
- Adaptation Dye-Job: Unlike most versions, here he has red hair as opposed to black.
- Always Second Best: To Joker, much to Penguin's chagrin.
- The Beastmaster: Like several other portrayals, he commands a huge amount of trained birds that apparently have a taste for human flesh.
- Butt-Monkey: He seems to be the Butt Monkey of almost every episode he's ever made an apearence in, no matter how short it was. He was the movie's Butt Monkey! Though oddly enough, he wasn't one in "Team Penguin", simply because Killer Moth was.
- Composite Character: Of different incarnations and adaptations himself. For example, he has penguin-like features such as a beak-like nose and flipper-likes hands like his incarnation in Batman Returns and a laugh similar to Burgess Meredith's portrayal in the 1960's live-action Batman series.
- Darker and Edgier: He seems just as insane as the rest of the villains, unlike most incarnations, where he's often the Only Sane Man among them.
- Disabled in the Adaptation:
- Even Evil Has Standards: He considers not interfering with his villain comrads' plan an elementary rule of courtesy.
- Evil Counterpart: Of Bruce Wayne, who Penguin envies for having everything he doesn't.
- Evil Is Petty: In addition to being a villain, he's an obnoxious boor. In his introductory episode, he crashes a charity ball at Wayne Manor, disdainfully addresses Alfred as "Jeeves", gets slapped for hitting on a woman, and tosses a wad of cash into the fireplace as a "donation" (which, when retrieved, turned out to be a piddling sum of $1 bills).
- Evil Laugh: Tom Kenny himself admitted that it was a bit of a Shout-Out to the Burgess Meredith version.
- Evil Redhead: Unlike the comics, where he usually sports black hair.
- Fat Bastard: No surprise there, and he doesn't even pretend to be anything else.
- High-Class Glass: Fitting for his upper-class roots and aspirations to regain his family's wealth.
- Impoverished Patrician: The Cobblepot family used to be wealthy and powerful, but the family fortune has long since been squandered, which is what motivates him to take up crime.
- In the Blood: According to Alfred, his grandfather was employed by a Cobblepot who treated him badly. Also, one episode features an attempt to retrieve a treasure stolen by a 19th century Cobblepot. Apparently, boorishnesss and criminality run in the family.
- Ineffectual Sympathetic Villain: As usual, though his general obnoxiousness makes him less sympathetic than most versions of the character.
- Jerkass: In sharp contrast to the polished manners of most other versions of the character, this Penguin is rude, crude, and thoroughly obnoxious.
- Lightning Bruiser: Unlike other versions, he is adept enough at combat to rival Batman despite being obese.
- Nice Hat: It's almost as tall as he is!
- Parasol of Pain: As usual.
- Pint-Sized Powerhouse: Still short in stature as his usual incarnations, but extremely combat savvy.
- Pungeon Master: Prone to making bird-related puns.
- Rich Idiot with No Day Job: Well, unless you call a life of crime a job.
- The Rival: To Joker, perhaps more than any other version.
- Scary Teeth: His teeth are often depicted as curved and sharp, especially in the show's opening sequence.
- Sinister Schnoz: As most other versions.
- Smarter Than You Look: He's not as stupid as Catwoman thought. He even once managed to defeat Batman!
- Spell My Name with a "The": Averted, much like Joker, he's only called "Penguin" not "The Penguin".
A South American mercenary who volunteered for a secret experiment, in which the powerful steroid Venom was pumped into his body. He can activate the chemicals at will, turning himself into a monstrous brute with Super Strength. He was hired by some local crime bosses to take down the Batman and in the ensuing fight, leaves Batman for dead with multiple fractured bones.
- Achilles' Heel: Electricity, as applied to his Venom tubes.
- Adaptational Badass: In the comics, Venom granted one enhanced strength along with some noticeable muscle growth. Here, Venom practically turns Bane into the Hulk. And instead of just breaking Batman's back, he breaks nearly every bone in Batman's body! And doesn't have to wear him down first by orchestrating a mass jailbreak.
- Amazing Technicolor Population: Venom turns his skin red, though it oddly doesn't do that to Joker when he uses it in "Brawn".
- Badass Boast: "I am Bane. The last opponent you will ever face."
- Charles Atlas Superpower: He's strong enough to rip apart an armored car with his bare hands without Venom!
- Curb-Stomp Battle: Does this to Batman, though for different reasons than in Knightfall. Mostly the fact that using Venom turns Bane into a Hulk-like figure in this incarnation and that his debut was in the third episode of the whole series meant he was going up against a Batman still getting used to fighting supervillains and whose only prior experiences at that point were Joker and Penguin.
- Evil Sounds Deep: A staple for Bane, and it gets deeper once the Venom kicks in.
- Jobber: After his first appearance, Bane was taken down usually by someone zapping his venom tubes with a jolt of electricity seconds into the fight.
- The Juggernaut: He literally gets referred to as one in his debut.
- Super Serum: Venom, the source of his powers, though the serum is never referred to by name in the series. It is, however, called "Venom" by Alfred in the "Junior Detective challenge" extra on the DVD of Season 1.
- Supernatural Gold Eyes: In addition to turning his skin red, Venom also causes his eyes to turn yellow.
- Top-Heavy Guy: He has ridiculously short legs when on Venom.
- Villain Decay: When Bane first appeared in "Traction" he was The Juggernaut, and he demolished Batman almost as badly as he did in the comics. Batman was beaten so badly he needed a giant robot suit to fight him next time. He's then reduced to a Jobber in every other appearance, (Robin took him down in a few seconds with an electrified staff) and what's worse by season 4 he's mostly just cracking open bank vaults like a C-list loser villain. The ultimate example of this trope in play is probably that Joker stole his Venom formula in "Brawn" and became more of a threat with it than Bane ever was.
Dr. Kirk Langstrom / Man-Bat
Dr. Kirk Langstrom was a scientist who worked at Wayne Industries. He specialized in the science of hearing and claimed his research was intended to cure deafness. In reality, he secretly concocted a chemical that could turn him into a fearsome bat-like creature, so that he can be feared like the Batman.
- Abled in the Adaptation: Unlike his counterpart in the comics, he shows no signs of losing his hearing.
- Adaptation Origin Connection: "Attack of the Terrible Trio" sees the titular trio use versions of the serum Kirk used to make himself Man-Bat, as opposed to be normal people in the costumes as in the comics.
- Adaptational Villainy: In this version, rather than to cure his own growing deafness (though his cover story is that it's for his deaf niece) he created the Man-Bat formula to be feared. And unlike previous Man-Bats, where Langstrom is not in control of his actions while the serum is active, this one is likely fully aware and in complete control.
- Art Evolution: Like Joker, he was given black rings around his eyes in his second appearance.
- Bio-Augmentation: As usual.
- Evil Albino: Man-Bat and his human form are both albinos. Subverted when Kirk Langstrom reforms and becomes The Atoner in Season 5.
- For the Evulz: Why does he become Man-Bat? Solely to instill fear in Gotham, similar to the Batman, though as an enormous bloodsucking monster.
- HeelFace Turn: In Season 5. He tells Batman that he had nothing to do with the Terrible Trio, and that he's all done with being Man-Bat. He even offers to help in any way he can, and creates a cure to revert the Trio back to normal.
- I Just Want to Be You: He turned himself into a monster because he wanted to be feared like the Batman.
- Mad Scientist: As with most versions of Dr. Langstrom, he intentionally experimented on himself with a mutagen to transform into a hideous bat-monster.
- Magic Pants: His pants remain even after he transforms.
- Our Werebeasts Are Different: Obviously, he's a were-bat.
- Superpowered Evil Side: Man-Bat.
- Super Spit: Man-Bat can spit out a green, slime-like adhesive that can entrap an enemy and even render guns useless.
Victor Fries / Mr. Freeze
Victor Fries was a common thief who was simultaneously electrocuted and frozen in a cryogenics chamber while running away from the Batman. The experiment granted him with the ability to fire blasts of ice from his hands, which can flash-freeze anything caught in their path.
- Abled in the Adaptation: This version of Freeze can survive unharmed in normal temperatures without his suit, which merely acts as a container for his powers when he doesn't need to use them (he has no control over them otherwise). However, exposure to excess heat will render him unable to produce ice.
- Adaptational Badass: This version of Freeze pretty consistently overpowers Batman.
- Adaptational Jerkass: Unlike the version of the character from the previous series that retroactively became the comic character, this version of the character lacks any sort of sympathetic backstory or motive and is essentially just a petty criminal that accidentally got superpowers. Though it does show a photo of him with a woman in his origin flashback, so it's possible that Nora might have been a part of his criminal activities after all.
- An Ice Person: Unlike other versions, though, he doesn't need a gun and shoots ice blasts from his bare hands.
- Body Horror: Just look at him without his suit in "Artifacts". He's emaciated and, like in the DCAU, his body is slowly withering away and he uses mechanical spider-like legs to walk.
- Cold Ham: Speaks in a monotone voice most of the time, yet is rather boastful and makes ice-related puns a la Arnold Schwarzenegger's Freeze.
- Create Your Own Villain: Freeze was originally a small-time diamond thief, until an accident during a car chase with Batman led to him getting his powers.
- Creepy Monotone: As usual.
- Disproportionate Retribution: Upon running into the homeless man who disrupted his escape so many years ago (thus setting off the chain of events leading to his immersion in the cryogenic chemicals), he goes out of his way to flash-freeze the man.
- Even Evil Has Loved Ones: The woman from the photos seen in the flashback before he got his powers is likely his wife, Nora.
- Evil Sounds Deep: He is voiced by Clancy Brown, after all.
- Human Popsicle: Does this to himself in "Artifacts" to escape Batman once and for all. Batman's Crazy-Prepared methods enable people more than a thousand years in the future to still beat him.
- Freeze Ray: As usual, though this version has it as a super power.
- Never My Fault: He "thanks" Batman for causing the accident that made him a metahuman and for all of the crimes he commits with his powers. At first, Bruce actually believes he's right, before confronting him and telling him he did this to himself.
- Pungeon Master: Every other line out of his mouth includes ice puns. However, unlike the previous ice-pun-quipping version of Freeze, this version actually manages to make them sound... chilling.
- Red Eyes, Take Warning: He has red eyes.
Selina Kyle aka. Catwoman is a cat burglar who has a flair for theatrics, and has a complicated love/hate relationship with the Batman.
- Adaptation Dye-Job: Catwoman is usually depicted with green eyes, but here they are blue.
- Adaptational Modesty: She still flirts with Batman, but she's far less sexualized than most other forms of the character and wears a more practical costume than normal.
- Affably Evil: She's a greedy thief for sure, though she is not without her usual flirty charms.
- Anti-Villain: She steals due to the adrenaline rush she gets, and usually only from other criminals.
- Badass Normal: She has no powers, yet is a highly skilled fighter and thief.
- Berserk Button:
- Someone getting in her way, more so if you're intervening in her heists. Ragdoll will vouch for that.
- Also, don't threaten any feline creature. She doesn't like that.
- Cat Girl: Naturally, she has a cat motif.
- Chronic Backstabbing Disorder: She'd rather be Batman's friend than foe, but won't hesitate to screw him over if he interferes with her plans.
- Classy Cat-Burglar: This is Catwoman, after all, burglary is her stock and trade.
- Compressed Hair: She has very long, thick black hair that somehow fits under that Cat-cowl of hers, even though it is slightly larger than the ones she's usually shown wearing.
- Dark Action Girl: And a damn good one, being able to equal Batman in combat and she knocks him out at one point. If that's not impressive, how about her stealing his utility belt and almost killing him with the Batbot (by accident as the reason she stole his belt was because she wanted to use his Remote-Controlled Batarang to steal Hideo Katsu's lion statue and ended up activating the Batbot while trying to work the RC Batarang) then accidentally stealing the Batmobile.
- Dating Catwoman: As always. She and Bruce have an actual date in "Ragdolls to Riches", but neither figure out the other's identity.
- Enemy Mine: She plays this well, especially in "The Cat, The Bat, and the Very Ugly". That, or it's her typical HeelFace Revolving Door.
- Friendly Enemy: She winds up teaming with Batman just as often as she fights him. Regardless of which side she's on, she enjoys every moment she gets to interact with Batman either way.
- HeelFace Revolving Door: As usual, she will alternate between being an ally and enemy of Batman, most times even within the same episode.
- Karma Houdini: She's the only member of the Rogues Gallery who always successfully evades capture by Batman or the police. The only consequences she ever suffers is not getting to steal something she wanted.
- Kindhearted Cat Lover: Like usual of course.
- Spy Catsuit: Naturally, though it's more concealing than usual.
- Whip It Good: Just wouldn't feel right without it.
Garfield Lynns / Firefly / Phosphorus
Garfield Lynns aka. Firefly is an arsonist whose crimes range from simple robbery to corporate sabotage. He is equipped with a jetpack, and armed with plasma cannons that can incinerate anything in their path.
- Achilles' Heel: Damaging his jetpack or disconnecting his fuel will take him out quickly.
- Beard of Evil: A small, scruffy blond goatee.
- Composite Character: His final episode also sees him become this show's version of Doctor Phosphorus.
- Deadpan Snarker: Not above quiping.
- Jet Pack: He uses one to fly around.
- Playing with Fire: He's armed with combustive laser beams to set things on fire. In his last episode, exposure to a radioactive substance gives him the ability to generate heat from his own body.
- Pyromaniac: He really enjoys getting paid to burn and blow things up.
- Psycho for Hire: He's hired by GothCorp to attack its business rivals in his debut. His next appearance in Season 2 has him working for Mr. Freeze as well.
- Took a Level in Badass: Goes from a low-level rogue, to capable of exploding the entire city in his last appearance.
- With Great Power Comes Great Insanity: He slowly loses his mind once he gains superpowers and becomes Phosphorus. It doesn't help at all when he soon learns that he's completely unable to turn off his heat powers.
- Unholy Matrimony: With Blaze, a fellow arsonist in his last appearance, (Batgirl even compares them to Joker and Harley) until his plan to blow up the city makes her leave him.
Arnold Wesker / Ventriloquist (w/ Scarface & Mr. Snoots)
Arnold Wesker is a professional puppeteer who developed a serious case of split personality after being booed off the stage one too many times; his gangster-like dummy Scarface became his evil alter-ego, forcing him to commit crimes. Wesker is always carrying Scarface in his hand, constantly talking to and taking orders from him.
- Anti-Villain: Arnold Wesker is an otherwise decent man who's forced into a life of crime due to suffering from severe mental illness.
- Berserk Button: Scarface almost ran Mugsy through a garbage shredder after being called a "dummy".
- HeelFace Door-Slam: During his stay at Arkham Asylum, Wesker is (more or less) successfully rehabilitated when Hugo Strange confiscates Scarface from him, replacing him with a new dummy named Mr. Snoots. Upon his release, Wesker is looking forward to a peaceful career of entertaining children with Snoots... until Strange returns Scarface to his apartment, just to satisfy his curiosity if Wesker would return to crime (he did).
- Hypocrite: Scarface calls Wesker "dummy" all the time, but don't dare call him that.
- Jerkass: Scarface is a very unpleasant, violent criminal.
- Nice Guy: Wesker himself is a relatively kind old man. His other dummy, Mr. Snoots, tries to make him stay good.
- Split Personality: Scarface serves as this to Wesker. Later on when he (temporarily) swapped Scarface for "Mr. Snoots", Snoots becomes yet another split personality (though fortunately he's much nicer).
- Toxic Friend Influence: Scarface is constantly abusing Wesker to force him to do bad things.
Detective Ethan Bennett / Clayface I
See the "Detective Bennett" folder for more information.
Edward Nygma was a university scientist working on methods to enhance human memory. He is fired from the university after his prototype invention fails, and he attempted to get revenge on his boss for (supposedly) sabotaging him. After Batman thwarts his plans, he adopts the criminal identity of the Riddler, committing elaborate crimes involving riddles, puzzles, and mind games that must be solved.
- Abusive Parents: It's implied that his father was this to him.
- Adaptational Badass: By his appearance in "Riddler's Revenge", he can actually last more than a few seconds in an outright brawl with Batman, which is more than most other incarnations of Riddler can say for themselves. He is also arguably more competent and definitely more serious than most other versions of the character.
- Batman Gambit: In his debut episode, he set fake bombs all over the city that could only be deactivated by solving various puzzles. This was actually a diversion made so that he could break into the City Hall database undetected and steal important information. He almost got away with it too.
- Berserk Button: Being called 'champ'. That's what his Jerkass dad called him when he was growing up.
- The Chessmaster: As usual.
- Cold Ham: While other Riddlers' are usually blatantly over the top and full of themselves, this Riddler is more cold, calculating and cerebral. However, he is still melodramatic and convinced he is smarter than everyone.
- Combat Pragmatist: He shocks Batman with an electric cable and uses his Mooks to distract him.
- Comic-Book Fantasy Casting: He looks an awful lot like Marilyn Manson, which makes sense because Manson was originally contracted to voice him.
- Create Your Own Villain: Sort of. While a lot of his shtick was already there during his Forgotten First Meeting with Batman as revealed in "Riddler's Revenge", his early run-in with Batman inspired the costume and some of his gadgets.
- Criminal Mind Games: His hobby
- Cut Lex Luthor a Check: Deconstructed, much like his Batman: The Animated Series counterpart. He was a brilliant scientist would end up being screwed over by sabotage which led him to becoming a supervillain. The fact that it would be the woman he liked as well as his partner who did so makes it worse.
- Faux Affably Evil: A staple of the Riddler.
- Forgotten First Meeting: While Eddie himself didn't forget, "Riddler's Revenge" revealed that Bruce had forgotten a run-in with a pre-Riddler Eddie before Eddie debuted as the Riddler in "Riddled".
- Goth: His appearance, especially the black tattooed makeup around his mouth.
- Green and Mean: A villain who wears green, as per norm for Riddler.
- Lean and Mean: He's also extremely thin.
- No Celebrities Were Harmed: Riddler really resembles Marilyn Manson.
- Riddle Me This: As usual.
- Tattooed Crook: Well, he is a villain, and the lines from his lips to his jaw are tattoos.
- Too Clever by Half: He's a great schemer, but in each episode he appears in, he ends up throwing a psychotic fit when his plans backfire.
- In his first encounter with Batman, his scheme to discover his secret identity would have actually gone off smoothly and without a hitch... had he put a gag on Detective Yin. By the time it occurs to him to try, she'd distracted him enough for the Batman to foil him.
- Tragic Villain: Edward and his associate built a revolutionizing device that would expand the capacity of the mind, only to have a jerkass financier sabotage its public demonstration, which got him expelled from the scientific community. It got worse when it turned out that it was his trusted associate that was the true saboteur, namely to keep the profits to herself and because she found Edward to be unstable when she saw him lose his temper against the financier when he called him "champ"... the same way his dad did.
A human/reptilian hybrid who has Super Strength and is an excellent swimmer, who can hold his breath underwater far longer than any human.
- Adaptational Intelligence: While most incarnations of Killer Croc aren't exactly known for their smarts, this guy is a bona fide Genius Bruiser.
- Barbie Doll Anatomy: Justified. He's part reptile, so he wouldn't have external genitalia.
- Beast and Beauty: In the 46th issue of The Batman Strikes, Croc falls in love with a news reporter, in part because she's the only person who refers to him as a man and not a monster. In the end, it turns out she rather likes him, too, and he gives himself up to the police for her.
- Beast Man: Possibly Croc's most beastlike incarnation to date (aside from perhaps the Batman: Arkham Series). Thankfully, the writers didn't claim that he had a "skin condition" this time.
- Curb-Stomp Battle: His first battle with Batman does not go well for the vigilante, with Croc absolutely manhandling him. Batman performs better later in the episode, though he still can't match Croc head on.
- Expy: Of Leatherhead from the original Teenage Mutant Ninja Turtles cartoon. While Killer Croc was created before Leatherhead, he's not a Cajun in the comic books.
- Genius Bruiser: Especially when compared with his Dumb Muscle portrayal in Batman: The Animated Series and even later portrayals, such as the Batman: Arkham Series.
- Half-Dressed Cartoon Animal: All he wears is a vest.
- Kill 'Em All: What his debut plan could have lead to, flooding Gotham to have the run of the place would have drowned several if not most of the populous.Croc: And I'll shed a crocodile tear for each and every one of them.
- Multiple-Choice Past: We don't know whether he's a military genetic experiment gone awry, he deals with the wrong kind of voodoo magic in the swamps, or if he's simply a circus freak. However, if the tie-in comic, The Batman Strikes counts as All There in the Manual, then according to issue 25, he was both a military genetic experiment subject before escaping, then was part of a circus freakshow before escaping that and ultimately coming to Gotham, though it's still unknown if he was born like that as in the comics or if being part of an experiment is the reason for his appearance.
- Never Smile at a Crocodile: Though the cause his unknown and disputed.
- Ragin' Cajun: Has a cajun accent.
Dr. Hugo Strange
An unscrupulous psychiatrist working at Arkham Asylum, who has a creepy obsession with learning more about the criminal mind and mental illness. So it doesn't take long before he becomes another criminal mastermind seeking to spread chaos around Gotham and oppose Batman, whose psyche also fascinates him.
- Be Careful What You Wish For: He wanted all the knowledge of the universe for helping the Joining. He got it and became catatonic because they telepathically broadcasted it into his mind.
- Big Bad Duumvirate: At the end of Season 5, he conspires with the Joining to try and defeat the Justice League and launch another invasion of Earth.
- Character Development: He becomes a villain over the course of several episodes — when he first appears, he's just a seemingly mundane, even helpful, shrink who vouches for Ethan Bennett's sanity in court. During his next appearances, it becomes increasingly apparent that he's severely lacking in empathy.
- Chekhov's Gunman: Makes his first, brief appearance in "Meltdown" and goes on to become much more important than that scene let on.
- The Chessmaster: Has on a number of occasions manipulated others like puppets. Most prominently in "Strange New World" where he exposes Batman to a hallucinogen and manipulates him into thinking he developed a poison that caused a Zombie Apocalypse, and very nearly made Batman release the real poison.
- Composite Character: While he soon became the Mad Scientist of the comics, he initially came off as the morally ambiguous head of Arkham Asylum who's obsessed with the insanity of Batman's villains (and Batman himself) like Dr. Jeremiah Arkham. His role in "Strange New World" was also originally meant for the Scarecrow, though it should be noted that Strange in the comics used fear-inducing toxins long before Scarecrow was introduced, making his role in that episode still true to the original character.
- Evil Old Folks: Effectively by his own admission in "Rumors", when he asks if their captor will satisfy "an old man's curiosity" before he and the other gathered rogues get collectively sent to "that great Arkham Asylum in the sky".
- Faux Affably Evil: He puts on an air of friendliness and politeness to his enemies, but none of it is sincere.
- Laser-Guided Karma: Practically sold out the entire human race to the Joining in exchange for all the knowledge in the universe. They give it to him, and he winds up a catatonic vegetable from mind overload.
- Mad Doctor: He uses Arkham as his cover to conduct unethical experiments.
- The Man Behind the Man: For D.A.V.E..
- Manipulative Bastard: Of course.
- Morally Ambiguous Doctorate: Later on, anyway. In his earlier episodes, he's always referred to as Professor Strange. Later, the show switches to calling him doctor for seemingly no reason.
- Omnidisciplinary Scientist: He's introduced simply as a psychologist, but he takes on various other fields of expertise throughout the series, including building a sentient robot, brewing a hallucinatory fear toxin, and communicating with an alien species.
- Psycho Psychologist: To the point of curing Arnold Wesker of his insanity... then ruining his life to drive him insane again, because it seemed interesting to do so.
- Scary Shiny Glasses: As usual.
- The Shrink: As usual.
- The Sociopath: He's quite a ruthless, Faux Affably Evil, Manipulative Bastard who feels no care or concern for anyone other than himself.
A professional thief with incredible contortionist abilities, who can bend and twist his entire body to a greater extent than other humans.
- Abnormal Limb Rotation Range: A burglar who can use his triple-jointed abilities to bend his body in normally impossible ways.
- Ambiguously Human: It's not clear whether he's just an unusually talented circus freak, or a metahuman with superpowers.
- Contortionist: Exaggerated. He's so good at this he can fit inside of a hat!
- The Rival: Competes with Catwoman, as they are often out to steal the same prizes.
- Rogues-Gallery Transplant: Traditionally a Flash rogue rather than a Batman rogue.
Pamela Isley was a high school student and friend of Barbara Gordon, who became involved in radical environmentalism. Pamela's fanatical devotion to protecting plants lead to her hiring a thug named Temblor to sabotage various corporate facilities. But when Temblor tried to kill his teenage girl "boss" for failing to pay him, Isley ended up getting exposed to mutagenic chemicals that gave her the power to control all plant life. Now calling herself Poison Ivy, she plans to replace Gotham City with a massive forest.
- Adaptation Origin Connection: She's introduced as being Barbara Gordon's best friend before transforming into Poison Ivy.
- Adaptational Modesty: Like Catwoman, this interpretation of Ivy lacks most of the flirtiness and sexuality seen in other versions. Justified since she's a teenager here.
- Age Lift: Usually around Batman's age, while here she's Batgirl's age when introduced.
- Anti-Villain: Type III, much more so in The Batman Strikes comic series.
- Brainwashed and Crazy: Can inflict this on others, even Batman and Superman; though both cases were temporary and in Superman's case, Kryptonite was needed and Lex Luthor was using her.
- Dirty Coward: When Temblor tries to kill Pamela and Barbara, the former tries to run off and leave her friend to deal with the angry thug.
- Does Not Like Shoes: Is barefoot as Poison Ivy, thought this is due to her Garden Garment mutation.
- Evil Former Friend: To Barbara Gordon.
- Evil Redhead: Even before becoming Poison Ivy. She even hired a criminal to terrorize a company that created mutated plants.
- Garden Garment: After her mutation, she grew some clothes made from plant matter.
- Green Thumb: Of course.
- She's All Grown Up: In The Batman Strikes, her body is drawn in a more adult way, showing that she's finally growing into the full-fledged seductress she's known as in other continuities.
- Hidden Depths: She seems to still want to be friends with Barbara Gordon. In "Batgirl Begins, Part 2", she wants her to join on her mission to save the plants of the world.
- Improbable Hairstyle: Her hair is fashioned to resemble a rosebud.
- Jerk with a Heart of Jerk: Is a user who often takes advantage of people's attempts to help her. Even before her turn to supervillainy, she tended to respond to heartfelt moments and opportunities for redemption with even more self-centered behavior.
- Not as You Know Them: The tie-in comic gives her her usual team-up with Harley Quinn, but switches the roles around: making Harley the (relatively speaking) level-headed brains of the operation, while Ivy is the unstable one. It helps that Ivy is an impulsive teenager in this continuity, while Harley - while still a daffy hedonist - is a bit more independent and cunning than usual.
- Ungrateful Bitch: Best shown when Barbara attempts to talk her out of her scheme with Temblor. When Barbara points out that hiring a mercenary with money she doesn't have is way over her head, her response is to ignore her, calling her a goody-good like her dad, and casually indicate that their friendship is over. Then, when Barbara's warning turns out to be correct and the merc comes for revenge, Barbara tries to help her out of it anyways... and Pam abandons her, leaving Barbara to be killed by Temblor to buy herself some time. Yet, after becoming Poison Ivy, she visits Barbara and expects her to join her. She later tries to kill her dad. And in a later episode, she sends her a mind-controlling plant.
- Well-Intentioned Extremist: Again, made more apparent in The Batman Strikes.
- Also apparent in "Fleurs De Mal".
- With Great Power Comes Great Insanity: Pam wasn't all right in the head as a normal human, but she really lost it when she became Poison Ivy.
- Younger and Hipper: She is around Batgirl's age in this version.
Basil Karlo / Clayface II
Basil Karlo is a struggling actor who is both physically unappealing and has no actual acting talent. After hearing a news story on Clayface aka. Ethan Bennett, Karlo stole a sample of the same chemical that transformed Bennett and ingested it, taking on Ethan's shapeshifting abilities, only he's much more powerful and his clay form is bigger.
- Adaptational Jerkass: The original Basil Karlo was an actor who was driven insane when a remake of a movie he did was being made without him being in the role, so he donned the identity of the killer he played in the film, Clayface, to murder the cast. Here, Basil Karlo became a villain because he wanted fame.
- Adaptational Ugliness: Basil Karlo in the comics had the leading man look. This Basil Karlo is pretty ugly and buck-toothed.
- Attention Whore: Not only doesn't he even try to hide from security cameras, he'll look into them and boast about what he's going to do. He also went on a news program and tried to tell a bogus sob story. In fact, aside from a brief instant when he felt some regret after attacking some people for rejecting him for an acting job, he embraces it after realizing he's famous because of it now and got angry when Batman was mentioned in the aforementioned news program.
- Bad "Bad Acting": He wasn't a good actor before he became Clayface and he still sucks at it when he gets his powers.
- Dark and Troubled Past: Subverted as he doesn't really seem to have one and parodied it as he tried to tell a story where he and his sister had to fend for themselves, but the reporter he tells it to clearly wasn't buying it.
- Decomposite Character: While he is a Clayface, in the comics, he's the original one, a role taken by Ethan Bennett here.
- Elemental Shapeshifter: The same as the original Clayface though noticeably more powerful, able to create more sophisticated tools out of his body and even grow to the size of a small building.
- Evil Counterpart: To Ethan.
- Legacy Character: Which is ironic, considering that the Karlo of the comics was the progenitor of the identity.
- Large Ham: Considered one in-universe, complete with having starred in a Stylistic Suck B-Movie Parody in which he hams like you wouldn't believe. Becoming Clayface only made it worse, really.
- Paper-Thin Disguise: Karlo's acting is so bad, that even with his shape-shifting anyone can see through his disguise just by hearing him speak.
- Superior Successor: More powerful than Ethan Bennett, attributed in-universe to his taking a larger dose of mutagen.
Black Mask (Roman Sionis?)
A mysterious crime lord wearing a black mask, which seems to be permanently attached to his face. He's in charge of a large crime syndicate with dozens of armored mercenaries at his command.
- Bad Boss: Never let yourself get delayed or question his plans if you value your life, as two of his Number Ones learned the hard way. He'll also assign a random mook to take over as Number One.
- The Chessmaster: Many of his plans fall into this.
- Clock King: Usually plans things to the second.
- Didn't See That Coming: His reaction to when his plans fail.
- Evil Plan: As a villain, he plots a few.
- Evil Sounds Deep: He's voiced by James Remar.
- Faux Affably Evil: Towards his enemies.
- Hannibal Lecture: Tries it on Robin and Batgirl.
- Knight of Cerebus: In his first appearance, he very nearly succeeds in destroying Gotham City and unlike other villains, has no humorous traits whatsoever. He also isn't above lethally punishing incompetence.
- Man in White: Wears a white suit, which has since became Black Mask's Iconic Outfit in most media appearances since.
- Red Eyes, Take Warning: Probably due to his mask.
- The Spook: When the Gotham PD gets him in custody, they can find no matching fingerprints, no identifying marks, and they're unable to remove his mask. He also has quite a well-trained organization for a guy with a completely unknown background. There's not even any mention of his real name from the comics (Roman Sionis).
Harleen Quinzel is a controversial TV psychiatrist whom Joker became infatuated with. After her show gets canned, Joker takes Harleen out for a night of fun, and she becomes his crazy sidekick/girlfriend Harley Quinn.
- Adaptation Distillation: Came through with very few changes thanks in part to her introduction episode being written by Paul Dini.
- Adaptational Late Appearance: Was introduced rather early on in BTAS, but didn't show up until season 4 of The Batman.
- Adaptational Jerkass: Most versions started as an Adorkable, shy psychologist who mostly slept her way through school. This version is already a stuck-up bitch with several loose screws, and it doesn't take much for Joker to drive her over the edge. She also poisons a group of squirrels, which is something that comics Harley would never do.
- Ax-Crazy: Moreso than other versions. This one also murders civilians for not liking her show.
- All Girls Want Bad Boys: Yet another blonde Harley.
- Berserk Button: Not only was she upset that she got fired and her show canceled and a new show takes over her time slot, but the psychiatrist of that show plans to talk about how Harley's emotional breakdown after being fired led to a life of crime and that she was a lousy psychiatrist to begin with.
- Brooklyn Rage: She sports her usual Brooklyn accent and can be very aggressive.
- Comic-Book Fantasy Casting: She certainly sounds a lot like Arleen Sorkin.
- Dark Mistress: For the Joker.
- Dumb Blonde: What everyone thinks of her. She got an online degree in psychology to show everyone she's more than just a pretty face, but apparently no one could get past it. Her rage at this is what initially drives her to join up with Joker.
- Genki Girl: Though less humorous than in Batman: TAS and more dangerously psychotic like in the comics.
- Jumping Off the Slippery Slope: It started with merely following Joker home to grill him for info for a tell-all book. Then he convinced her to join him on a "night on the town," supposedly to help her research. By the end of it, she had gleefully taken part in a spree of destruction and was willingly trying to attack Batman, and when the media catches wind of this and makes her a pariah for it, she really goes off the deep end.
- Love Makes You Evil: Her screws were already loose to being with, but Joker gives her the final push she needs.
- Mad Love: Naturally, though it's played a little differently than usual. Here, Joker dotes on Harley and legitimately seems to enjoy her company as opposed to his usual abusive fare, but sees the whole thing as mere entertainment and doesn't really care about her any more than that. Likewise, though he still manipulates her into the whole thing, it's made clear that this version of Harley really enjoys the whole supervillain lifestyle and helps him for reasons more than her usual delusional Extreme Doormat personality.
- Most Common Superpower: Very noticeable pre-villainy.
- Never My Fault: She's fired for the following: telling a girl to go behind her mother's back to date a boy she wasn't allowed to see, ignoring the network executive's concerns for her clearly bad advice, and harassing Bruce Wayne with a jilted-ex when he was promised that he'd be talking about a charity drive. To her, they just can't see past her "playful exterior".
- Not as You Know Them: The tie-in comic gives her her usual team-up with Poison Ivy, but switches the roles around: making Harley the (relatively speaking) level-headed brains of the operation, while Ivy is the unstable one. It helps that Ivy is an impulsive teenager in this continuity, while Harley - while still a daffy hedonist - is a bit more independent and cunning than usual.
- Perky Female Minion: As always.
- She-Fu: As usual.
- Steven Ulysses Perhero: Her real name is Harleen Quinzel.
- Unholy Matrimony: With the Joker.
- Villainous Harlequin: Naturally.
Recurring Henchmen and Minions
The Kabuki Twins (Peri and Gale)
A strange pair of masked geishas/ninjas who act as Penguin's bodyguards/henchgirls.
- All Asians Know Martial Arts: Penguin acquired them during his stay in the Orient and they are experts at fighting, often times besting Batman himself in combat.
- All There in the Manual: They are never named in-series, but side-material states that their names are "Peri" and "Gale".
- Ambiguously Human: They are The Voiceless, The Faceless and they tend to move in disturbing, almost inhuman ways. For all we know, they could be robots or some type of genetically-engineered, anthropomorphic birds!
- Bodyguarding a Badass: Penguin is an Adaptational Badass in this series, being more than capable of handling himself in combat. But even he needs backup at times.
- Bodyguard Babes: Sort of.
- Canon Foreigner: They don't have any counterparts in the comics.
- Chuck Cunningham Syndrome: They stopped appearing towards the end of the series.
- Creepy Twins: See Ambiguously Human and you'll understand why.
- The Faceless: They are never seen without their masks or catsuits at any point in the series.
- Kimono Fanservice: Subverted. The twins wear green kimonos and black wigs over their masks and catsuits when they're not fighting, but there is really nothing sexy about them.
- Paid Harem: Possibly. Though it's a very peculiar example, as there's no real way to know exactly what they are. Humans? Robots? Mutants? Are they even actually female?
- She-Fu: Their primary fighting style, which involves a lot of flips, kicks, and double-teaming.
- Spy Catsuit: They wear red ones.
- Stronger Than They Look: As Yin points out in the GCPD case files, the Kabuki Twins appear to be harmless in their geisha getup, but are ass-kicking martial artists with Wolverine Claws.
- White Mask of Doom: And they are never seen without them.
- Wolverine Claws: Three each on both hands.
- The Voiceless: They never speak and the only vocal noises they make are unintelligible whispers.
Rhino and Mugsy
Rhino and Mugsy are the hired henchmen of the Ventriloquist and Scarface.
- Canon Immigrant: They were also Scarface and Wesker's goons in Batman: the Animated Series.
- Red Oni, Blue Oni: Mugsy is the red (hotheaded, annoyed at having to work for a "block of wood") while Rhino is the blue (calm, willing to play along with Scarface if it means a payday)
- Stout Strength: They're very tall, wide and strong.
- Those Two Bad Guys: Another pair of henchmen for a main villain.
Punch and Judy
Punch and Judy are Joker's duo of mute henchmen.
- Canon Foreigner: Created for the show, but they were likely based on Rocco and Henshaw from Batman: the Animated Series.
- Dumb Muscle: They're big and strong, but neither of them seem to have much in the way of brains.
- Out-of-Character Alert: After they insult his plans in "Clayfaces", Joker notes that they've never talked before. It's because Clayface is impersonating them.
- Meaningful Name: Aside from their names being shout outs, Punch uses a very punch heavy fighting style, while Judy—whose name sounds like "judo"—does a lot of grappling and throwing.
- Shout-Out: To Punch and Judy.
- Spear Counterpart: They are essentially male versions of Penguin's Kabuki girls, as they were introduced after them.
- Stout Strength: They are huge, and have the strength that comes with it.
- Suddenly Voiced: In "Clayfaces", though it's because Clayface is impersonating them.
- Those Two Bad Guys: The only two henchmen of Joker.
- Vocal Dissonance: When they actually Clayface posing as them speak for the first time in "Clayfaces", they have snooty, vaguely British sounding voices, which is far different from what you'd expect from big brutes like that.
One-Shot Batman Enemies
Dracula is the main antagonist of The Batman vs. Dracula. He is an undead vampire from Transylvania who was buried in Gotham City, but is accidentally resurrected by the Penguin. He plans to turn every human in the city into his personal army of vampiric slaves.
- Aristocrats Are Evil: Obviously, Count Dracula is a very villainous nobleman.
- Back from the Dead: Dracula was killed in the 19th century by a wooden stake stabbed into his heart. However, Penguin accidentally revives him by spilling his blood over Dracula's corpse.
- Big Bad: Of The Batman vs. Dracula. Were you expecting someone else?
- Card-Carrying Villain: He straight-up calls himself Evil Incarnate and the Prince of Darkness.
- Death by Secret Identity: He learns Batman's true identity shortly before he is killed.
- Even Evil Has Loved Ones: Part of his evil plans include sacrificing Vicki Vale in a magic ritual to resurrect Carmilla, a deceased vampiress he was in love with.
- Evil Counterpart: Dracula is presented as being one to Batman, what with both of them being rich men who are active at night and use prominent bat imagery/motifs to scare people.
- Eviler Than Thou: Upon his resurrection, Dracula quickly establishes himself as a greater threat than any of the average street thugs or even the costumed lunatics that Batman normally faces, obviously due to his supernatural powers. Even Penguin and Joker are both forced to become Dracula's mind-controlled, sycophantic flunkies (with Penguin as Dracula's only human servant, and Joker getting turned into another vampire minion).
- Faux Affably Evil: He acts cordial and polite, but he's still a bloodthirsty monster.
- Knight of Cerebus: The animated film he appears in is much darker than the main series, primarily because of how blunt the film is about him feeding on blood and turning people into vampires. He also proves to be one of the most dangerous opponents that Batman faces (at least after the first two seasons, when the movie was released).
- Mind Control: Dracula can use his Hypnotic Eyes to force humans (like Penguin) into following his commands. And of course, everyone he turns into a vampire loses all of their free will and become his mindless minions.
- Our Vampires Are Different: He has most of the typical vampire traits, though he differs from his vampire minions due to still having free will. His vampirism is also immune to the cure that Batman creates, because his affliction is more "supernatural" in nature.
- Public-Domain Character: Obviously, this guy is yet another version of Dracula from the novel of the same name.
- Sealed Evil in a Can: Even though he was already killed long ago, the possibility of his return from death was always there. Penguin accidentally unleashes him when his blood drips into Dracula's heart, restoring him to an undead being.
- Super Speed: He's unnaturally fast, and easily dodges most of Batman's attacks.
- Super Strength: He also easily overpowers Batman when it comes to direct fisticuffs.
- The Virus: Dracula's bite turns his victims into vampires, who then spread the infection to other people.
A minor crime boss who gets captured by Batman in the first episode.
- Acrofatic: Despite his girth, he's agile enough to hop rooftops while running away from Batman.
- Ascended Extra: After his sole speaking role in the series premiere, his only other appearances on the show are in a couple of cameos in the episodes "A Matter of Family" and "Rumors". The tie-in comic The Batman Strikes! has him appear more frequently and even has an arc revolving around him conspiring with the man who gave Bane his venom to create an army of super soldiers.
- Fat Bastard: Like most incarnations, this Rupert Thorne is an overweight crime boss.
- Screw the Rules, I Have Money!: He attempts to pay off Batman by offering him a percentage of his profits, but it doesn't work.
Arthur Brown / Cluemaster
Arthur Brown was Child Prodigy who competed in a children's game show called Think, Thank, Thunk from the 1970s, and won for twelve straight weeks. Unfortunately, his thirteenth week did not translate into a victory as he incorrectly answered his final question. Arthur's mother claimed the show was rigged and sued the show's producer, Bert Ziegler but the lawsuit was eventually dismissed. Arthur never got over the loss, dropping out of school, secluding himself in his mother's basement, and becoming morbidly obese from binging on the lifetime supply of Kremelo candy bars he received as a consolation prize. Artie spent the next thirty years plotting revenge against the show's host Ross Darren, Bert Ziegler and Yelena Kliminov, the competitor he lost to.
- Adaptational Ugliness: Big time, no pun intended. The massively overweight and balding Cluemaster from this show is a far cry from the fit, head of hair Arthur Brown from the comics.
- Adaptation Dye-Job: Goes from a blonde to a redhead.
- Anti-Climactic Unmasking: Arthur takes off his hood when he confronts his three prisoners. They stare at him blankly, until he reveals that he's Arthur Brown aka. "Little Artie".
- Basement-Dweller: As Batman says, "Where would you start looking for a boy who never grew up?". Arthur even built his evil lair in his mom's basement.
- Berserk Button: Getting a question wrong, being asked a question he doesn't know the answer and being forced to admit he doesn't know everything.
- Borrowed Catchphrase: He uses Ross's "Hey-oh!" a few times during the rematch.
- Catchphrase: As a child, Cluemaster screams "NO FAIR!" when he loses the "Think, Thank, Thunk" game show. As an adult, he screams it again when Batman beats him at his own game.
- Child Prodigy: Was one, until he gave up on academics and life in general following his loss.
- Disabled in the Adaptation: This Cluemaster is so obese, he mostly used a motorized platform to help himself get around.
- Disappeared Dad: No mention is made of where Artie's father is.
- Disproportionate Retribution: He lost a game show for child geniuses when he was ten (which he claimed was rigged) and spent decades plotting revenge against the people he held responsible, becoming a morbidly obese Basement-Dweller in the process. Batman seriously called him out on this when he confronted him, but it went in one ear and out the other.
- Evil Is Petty: Would rather waste his genius and talents which could have gotten him anywhere in life to set up an elaborate revenge against people who don't even remember who he is.
- Fatal Flaw: His pride in his intelligence. To get a question wrong is impossible to him and it causes him to lose his temper and spend decades plotting instead of getting anywhere in life.
- Fat Bastard: Unlike the comics, this Artie Brown is a mountain of a man who's spent the last 30 years plotting his revenge... and eating pallets full of Kremelo bars (his consolation prize).
- Hoist by His Own Petard: He is so insufferably confident in his own genius he allows himself to be goaded by Batman into accepting any question... and is completely stumped when Batman asks him the only question he couldn't possibly know.
- The same thing happened when he was a child. He was so smug about his abilities he choose the hardest level of question on the game show, and ended up getting the answer wrong.
- Even before Batman shows up, he had a chance to win the revenge game by giving the simple answer to the final question, but instead decides to extend the answer, giving Batman enough time to defeat the final Mook.
- Hypocrite: He throws temper tantrums when he's outsmarted, even though his opponents played fairly. For double humiliation, Batman beat him at a game where he made up the rules. And despite promising to let them go if Batman stumped him, he still attempted to kill them (Batman, of course, prevents it)
- Insufferable Genius: He really like boasting about his intelligence.
- It's All About Me: The only thing important to him is being the champion, and probably let everyone know he's smart.
- Kevlard: A mild example. Artie's so huge that when Batman lands a flying kick against him, he gets stuck in Artie's stomach flab and ends up tossed for his efforts.
- Laughably Evil: He's a morbidly obese Basement-Dweller. As far as one-shot villains on this show go, he's definitely one of the most ridiculous of them all.
- Never My Fault: Arthur refused to believe he lost the game show fairly and accused it of being rigged, even though he'd been winning for 12 weeks straight and genuinely got the question wrong.
- Recognition Failure: When he pulls his mask off in front of his captives from the show, none of them recognized him until he told them who he was, and even then they seemed to only vaguely remember him.
- Psychopathic Manchild: He was a former game show contestant in his childhood, and he believes he lost because his opponent cheated. He has spent 30 years doing nothing but dwelling on his losses and plotting his revenge. Inside his mother's basement no less.
- Revenge: On the host, producer and competitor he lost to, believing that they rigged the show and cost him his title as champion.
- Sore Loser: Even as an adult, Arther cannot take a loss and accuse others of cheating.
- Stout Strength: Despite being a morbidly obese Basement-Dweller, Artie's a huge Mighty Glacier capable of flinging Batman around and shrugging off Batman's blows.
- Villainous Breakdown: He goes completely nuts when forced to admit that he doesn't know Batman's true identity.
- Weight Taller: He's about nine feet tall in addition to being fat as hell.
- You Could Have Used Your Powers for Good: When Batman finally confronts him in his lair, he tells Artie that he could have done something more positive with his intellect if he hadn't wasted it and his life on taking revenge on the ones whom he believed had wronged him.
Nathan Finch / Gearhead
A cyborg criminal with the ability to hack any vehicle or device with nanomachines, allowing him to take control of it.
- All There in the Manual: His real name and origins aren't mentioned in the episode where he appears, but the tie-in comic The Batman Strikes! tells them in the 36th issue (his name is Nathan Finch, just like the mainstream comics version).
- Badass Driver: He's very good at driving any vehicle he gains control of.
- Nanomachines: Nanites are the source of his abilities.
- Cool Car: In fact, he can turn any car into a yellow car that can even outdo the first Batmobile.
D.A.V.E. (Digitally Advanced Villain Emulator)
An A.I. program created by Hugo Strange, meant to analyze each supervillian's M.O., tactics, and backstories supposedly in an attempt to cure them, but in actuality, D.A.V.E. is meant to combine all their strengths into one entity, making him the ultimate villain who can take down the Batman.
- A.I. Is a Crapshoot: Goes without saying. Subverted when it turns out he was purposefully programmed to become evil.
- All Your Powers Combined: He has the perfect combination of the best skills of each of Batman's worst enemies, both mentally and physically.
- Awesomeness by Analysis: D.A.V.E. figures out Batman's secret identity this way. He calculates how many Gotham men have a build that matches Batman's, how many people have the resources to construct Batman's arsenal, and how many people might have the motivation to fight crime the way Batman does. Bruce Wayne is the only person who meets all the criteria.
- Badass Longcoat: When he first goes on a rampage, he steals a trenchcoat that he likes. He wears it for the rest of the episode.
- Brain Uploading: He's created from the duplicated mental patterns of the entire Batman Rogues Gallery.
- Canon Foreigner: He's created for the show.
- Deadpan Snarker: He does this a lot.
- Death by Secret Identity: Not too long after deducing that Batman is Bruce Wayne, D.A.V.E. is defeated and destroyed by the Dark Knight.
- The Dragon: To Hugo Strange, although he is unaware of this since he tends to act on his own accord.
- For the Evulz: As he himself puts it:Batman: D.A.V.E., why are you doing this?D.A.V.E.: Did you just say why? Why do you dress like a bat? Why do you fight crime? Why do we do anything, Batman? I do what I do because I have made it my purpose, like you have made it your purpose to stop me, but shall fail trying!
- Fun with Acronyms: His name.
- Generic Doomsday Villain: He may well be a deconstruction. He is a robot programmed by Dr. Hugo Strange with the memories and abilities of Batman's worst foes for the sole purpose of giving Batman a challenge. He proceeds to easily curbstomp Batman and steals ALL of Gotham's money just to commit the ultimate crime, but is defeated when Batman asks him to explain his origin story. Since D.A.V.E believed that he used to be a person, he went catatonic after realizing that he had no backstory of his own.
- LEGO Genetics: He's made from the mental patterns of Batman's enemies.
- Logic Bomb: What defeats him. When he realizes that his personality is an amalgamation of all of Batman's enemies, he realizes he has no real identity of his own. His system overloads and blows out as he tries to figure out who he is.
- Pragmatic Villainy: He doesn't snap Batman's neck when he has the chance for two reasons: breaking bones was passe and Batman's defeat had to be the ultimate defeat.
- Ridiculously Human Robots: He's designed to behave as a highly intelligent yet insane criminal, who doesn't quite realize that he's actually a supercomputer. He even takes a liking to someone's trenchcoat.
- Tomato in the Mirror: He doesn't actually know he's a robot.
- Ultimate Lifeform: Calls himself "Gotham's Ultimate Criminal Mastermind". it's even the name of the episode he appears in.
John Morrow / Everywhere Man
A scientist friend of Bruce Wayne who created a device that allows him to produce endless copies of himself. However, the first clone turned evil, kidnapped the original Morrow and switched places with him, and began stealing works of art for his private collection.
- Blessed with Suck: Arguably; the clones he creates become progressively more and more sentient, and every multiplication equals an even more untrustworthy clone. This ability only comes in handy a few times, so a long fight isn't exactly a good idea.
- Canon Foreigner: Created for the show.
- Expy: Of Multiple Man or Riot.
- Hoist by His Own Petard: Batman and Robin use E-Man's clones' distrust to cause dissent among the clone army.
- Ink-Suit Actor: Looks like Brandon Routh with red hair.
- Me's a Crowd: His power.
- My God, What Have I Done? : The original initially made the duplicator gauntlet in order to get more work done. He never counted on his duplicate to become sentient and betray him. As a result, he gets locked up while the duplicate took his place.
- Send in the Clones: His powers allow him to do this.
Francis Grey was a clock repairman who stole a watch from the shop he worked at out of desperation, and accidentally causes the destruction of an entire city block during his escape. This lands him in prison for seventeen years. During his stay, his constant obsession with clocks and time causes him to develop powers allowing him to turn back time. However, he can only go back twenty seconds at most, so getting back the time he spent in prison is out of the question. Once released, he uses this ability to steal chemicals and mix them to form a deadly toxin and kill thousands of Gothamites on New Year's Day, as payback for his time being taken away from him.
- The Bad Guy Wins: Francis's plan succeeds, his bomb goes off and he kills everyone, including Batman. However, he undoes it when he ends up killing his own son as well.
- Big "NO!": When his son dies as a result of his scheme to flood Gotham with poisonous gas at the strike of midnight on New Year's Eve.
- Born Unlucky: Francis isn't just klutzy, he's extraordinarily unlucky - he mostly uses his powers to cover up the many, many times the universe screws him over. Amusingly, from our heroes' perspective he's an ace criminal who accounts for everything simply because everything that could go wrong for him already has over several resets.
- Canon Foreigner: Francis doesn't appear in the comics, although he does seem to be this continuity's version of the Clock King, which would make this a case of Adaptation Name Change.
- Clock King: In the sense he memorizes all of an opponent's moves each time he goes back in time a few seconds.
- Crouching Moron, Hidden Badass: As clumsy and klutzy as he is, he's a very big threat to Batman due to his time powers. He actually succeeds in his Evil Plan, but chose to do reform on his own free will.
- Disproportionate Retribution: Goes both ways. He only stole a watch, but in doing so toppled a set of Disaster Dominoes that got him locked away for over a decade. He gets back at the city by killing everyone in it.
- Earn Your Happy Ending: He is eventually able to undo his original crime with his powers. In the present day, he and his son work together as clock repairmen.
- Epic Fail: Most of the timelines he undoes involve him getting spectacularly thwarted by Batman (and the first time, a common Red Shirt).
- Expy: Appears to be based off the Clock King, in particular the Tem version.
- "Groundhog Day" Loop: He can voluntarily create these, but they only last for 20 seconds. It's enough for him to repeat the recent past over and over to avoid all his mistakes.
- HeelFace Turn: Through a combination of Big "NO!" and Reset Button.
- My God, What Have I Done?: Accidentally killing his own son causes this reaction and finally gives him the power to go back to the original theft of the watch.
- Outside-Context Problem: It's never explained how he got his powers, just one day he was in his prison cell surrounded by clocks and somehow managed to stop time. It's never made clear if he had the power before and merely discovered them that first time, or if he somehow gained time powers simply from being being surrounded by clocks.
- Pyrrhic Villainy: Subverted. He accidentally kills his own son with his poison bomb, but the grief of this allows him to go back 17 years in the past and undo all of his mistakes.
- Reset Button: He's a walking case of this, able to reverse time by several seconds and eventually several years in order to Set Right What Once Went Wrong.
- Save Scumming: In-Universe, his power in a nutshell.
- Set Right What Once Went Wrong: A villainous example; his Time Master powers let him redo several seconds and undo his mistakes. At the end, he is able to go back to his original crime 17 years ago and undo it.
- Time Master: A very minor version who is capable of slipping several seconds back in time, to avoid mistakes he just made.
- Time Travel: He has the power to rewind time. How or why he's able to do this is unknown.
Dr. Jane Blazedale / Blaze
A disgraced nuclear physicist who becomes Firefly's girlfriend and an accomplice in his crimes.
Justice League Enemies
A hostile collective of alien robots who invade planets and destroy entire civilizations, while assimilating as much local technology as they can. They serve as the main villains in the finales of Seasons 4 and 5, clashing with the whole Justice League when they attempt to take over Earth.
- A.I. Is a Crapshoot: The Joining were created by an unknown species of organic aliens, who became their first victims.
- Alien Invasion / Robot War: They secretly infiltrate planets before launching all-out attacks on them.
- Aliens are Bastards: They travel to planets to loot and destroy them, destroying every civilization they come across in the process.
- Big Bad: Of the two-part seasonal finales, "The Joining" (Season 4) and "Lost Heroes" (Season 5).
- Canon Foreigner: They were created for show.
- Eviler Than Thou: Numerous Gotham villains, including the Joker, team up with Batman and the other heroes to take them down as they recognize them as a threat. Hugo Strange actually allies with them, but it's clear that they see him as just a useful pawn.
- Expy: Of Brainiac. And probably the White Martians in the comics, and the Alien Invaders from the Justice League episode "Secret Origins", right down to their enmity with Martian Manhunter.
- Hive Mind: The Joining is a collective artificial intelligence, consisting of countless robots and machines thinking as a single entity.
- Human Disguise: The Joining use spies disguised as humans, even kidnapping Lucius Fox and replacing him with a robotic duplicate in order to infiltrate Wayne Enterprises.
- Planet Looters: Their M.O. is to steal all the useful technology they can from other planets, absorbing it into themselves.
- Omnicidal Maniac: They've exterminated all organic life on every planet they conquered.
A corrupt billionaire and criminal mastermind from Metropolis, who has a personal grudge against Superman.
- Affably Evil: As usual.
- Alliterative Name Lex Luthor.
- Arch-Nemesis: To Superman.
- Bald of Evil: As usual.
- Corrupt Corporate Executive: This is Lex Luthor.
- Diabolical Mastermind: He's Luthor.
- Evil Sounds Deep: He's voiced by Clancy Brown.
- Fantastic Racism: Similar to other recent incarnations of Luthor, this version has a hatred of aliens.
- Knight Templar: Believes his taking control of the world will actually help it significantly. He also has plans to ensure the world will never be in danger again.
- Kneel Before Zod: Forces a mind-controlled Superman to bow to him.
- Manipulative Bastard: As usual.
- Not-So-Well-Intentioned Extremist: Claims he plans to ensure no one will try to take over the world again. Batman points the obvious hole in his plan, he is trying to over the world for his plans to work by destroying and taking control of foreign military bases. His response? "Someone has to be in charge".
One of The Flash's enemies from Central City. This villain commits crimes using advanced mirror-based technology.
- Canon Foreigner: Not Mirror Master himself, but the show created an assistant named "Smoke".
- Composite Character: Of both Mirror Masters. He has Sam's genius intellect and charisma as well as Evan's "I can do anything I think of with mirrors" ability.
- Ink-Suit Actor: He looks like John Larroquette.
- Magic Mirror: As usual.
- Revenge Before Reason: Against the Flash.
An alien supervillain and former member of the Green Lantern Corps, who betrayed his organization. He uses a yellow power ring with similar abilities as a Green Lantern ring.