"You know, I've always measured my success by counting the number of victims I've had. But now, I think I'm going to widen my scope and start counting the number of Earths I conquer instead. You want to go home? Let's go. After all, this Earth has already been brought to its knees."
Pre-Crisis (Earth-1 unless noted)
- "Vertigo" & "State v. Queen": The Count, real name Cecil Adams and also known as Count Vertigo, is a sociopathic drug peddler who seeks to push a new drug, known as Vertigo, onto the streets of Starling City. The Count kidnaps people to serve as test subjects as he tries to perfect Vertigo. He injects them with the drug, causing them excruciating pain, then offers them a gun with one bullet: they can shoot the Count for revenge, or shoot themselves to end the pain. The suicide rate, after nearly thirty victims, is one hundred percent. He also tests the drug on his own minions, as well as using it as a weapon. The Count sees the fatalities that result from Vertigo as making the drug even better, comparing it to a wine ripened with age. After breaking out of prison, and helping The Dollmaker escape, the Count poisons vaccines with Vertigo to spread the drug to unsuspecting people. Having accepted an offer from Brother Blood to kill the Arrow, and discovering the vigilante's true identity, the Count takes Felicity Smoak hostage to lure the Arrow, and threatens to kill her with an injection of Vertigo before being killed. A deranged sadist who considers killing to be "one of life's great pleasures", the Count revels in his crimes, spreading death and misery with a smile on his face.
- "Broken Dolls": Barton Mathis, better known as "the Dollmaker", enjoys targeting young and beautiful women in order to "preserve their beauty". After kidnapping his victims, Dollmaker brutally murders them by pouring liquid polymer down their throats until they drown, before dressing them up as dolls and putting the corpses on display. He had murdered at least eight women with said method before being arrested by Quentin Lance. After escaping from prison thanks to Count Vertigo, Dollmaker continues his killing spree while harboring a grudge against Lance. Planning to make him suffer, Dollmaker murders a young woman while forcing Lance to listen to her screams via a telephone. He also attempts to kidnap and murder Felicity Smoak the same way. Later, Dollmaker kidnaps both Lance and his daughter Laurel and attempts to force him to watch his daughter die.
- Arrow: Season 2.5 official tie-in comic book series: Khem-Adam is the leader of Onslaught, a group of fanatical, religious terrorists, who took advantage of the power vacuum in Kahndaq after the previous dictatorship was overthrown. His main goal is to force his country back into the old, barbaric ways, with women in particular being reduced to nothing more than serving the needs of the men. He has a group of young women forcefully abducted for nothing more than undergoing school education—after murdering their teacher right in front of their eyes. He is later shown to orchestrate mass executions on any one who dares to oppose his godly quest, and assigning the girls to his men as personal slaves to be beaten and raped. When one of the girls kills her abuser in self-defense and manages to escape, he immediately orders the rest of the group to be executed as an example. Misogynistic, cruel, and with a delusional fantasy of carrying out the will of the Old Gods, Khem-Adam earns the disgust of even the hardened, criminal members of the Suicide Squad, with one member in particular being a former military leader of the overthrown dictatorship.
- "The Calm" & "Canaries": Werner Zytle proves to be a worthy successor following the death of the original Count Vertigo, taking control of the drug and modifying it to make the user hallucinate their worst fears. He is introduced forcing a fellow gang leader to take the drug before killing him and taking control of the other gangs in Starling City. He decides a reasonable way to attempt an assassination on Oliver Queen is by firing a rocket launcher into a restaurant full of people. He later tries to kill the remaining gang leaders of Starling City by blowing up the entire stadium they were in; the stadium contained around 20,000 people. In his next appearance, Zytle escapes police custody with the help of a reporter whose family he threatened. He then forces said reporter to try to kill the Arrow via suicide bomb. He then takes several hostages in a drug lab, forces them to make more of the Vertigo drug, and when Team Arrow comes to the rescue, he attempts to burn his hostages alive.
- Season 3's flashback sequences: General Matthew Shrieve initially appears as a reasonable and helpful military officer before being revealed as a callous extremist. Regarding China as an economic threat to the United States, Shrieve intends to use the Omega virus to destabilize the country, caring nothing for the lives that would be destroyed by his actions. After usurping Amanda Waller as the head of A.R.G.U.S., Shrieve sends a squad of soldiers after Oliver and the Yamashiros, including young Akio, to eliminate potential witnesses to his impending crimes. Unleashing the Omega virus on Hong Kong, causing thousands of infections and deaths, Shrieve causes the virus to spread even further by disguising injections of it as a vaccine. When Akio is infected, Oliver and Maseo confront Shrieve for a possible cure. After handing them a supposed cure, Shrieve reveals that it was only insulin for his diabetes, using this as a distraction in an attempt to kill them both. After Akio succumbs to the virus, Shrieve taunts his parents, cruelly laughing in their faces. Although the virus is ultimately prevented from spreading beyond Hong Kong, hundreds, if not thousands suffered its effects, something Shrieve shows no remorse for. Militant and xenophobic, Shrieve, despite his delusions of righteousness, is ultimately nothing more than a smug mass murderer devoid of conscience.
- Season 4: Lonnie "Anarky" Machin is far worse than his comics counterpart. Once a mob enforcer, fired because his methods were too extreme, he is introduced to the audience as trying to ingratiate himself into H.I.V.E. by forcing Jessica Danforth to drop her candidacy for mayor. When his first attempt fails, he kills several policemen and kidnaps her daughter, to whom he gives a false sense of security before sadistically breaking her finger and promising to do much worse to her, before being intercepted by Team Arrow. During the ensuing confrontation, his face gets burned by Thea, which causes him to develop a creepy obsession towards her. After escaping imprisonment, Machin attempts to settle old scores, first killing his foster parents and then targeting H.I.V.E., in particular Damien Darhk, for not letting him join them. To get his revenge, he seizes Darhk's wife and daughter, again being stopped by Oliver and his friends narrowly before committing Cold-Blooded Torture. Finally, shortly before H.I.V.E.'s plan of global nuclear devastation comes to fruition, Machin invades Tevat Noah, where H.I.V.E. harbours several hundred people to survive the crisis, and promptly plans on destroying it. After getting confronted by Thea yet again, Machin kills her boyfriend Alex Davis right in front of her, dismissing him as a hindrance. Kidnapping Darhk's family a second time, Machin continues with his plan, causing Ruvé Darhk to try to appeal to him that he is essentially destroying the last safe place on earth, which just causes him to sarcastically ask her if he strikes her as a rational person and later murder her. Anarky has no greater goal or vision, he just kills because it amuses him and gives him a sick sense of satisfaction.
- Season 5's flashback storyline: General Konstantin Kovar is a member of the Russian government who rules over the village of Krasnoyarsk, and leader of a criminal organization. Planning to rule over the country, he attempts to stage a coup by gassing the Russia's entire political and military leaderships to death. As Oliver Queen foiled his attempt and nearly killed him, Kovar returns to take vengeance on him. After capturing Oliver, he tortures him by injecting him a drug that causes him to relieve all of the physical, psychological and emotional pain he lived in the past five years. Kovar then offers him a gun, expecting him to be Driven to Suicide. When Oliver escapes his cell instead, Kovar tries to kill him. Ultimately defeated, he gloats that the island will forever remain his prison. Kovar's sophisticated and polite façade only serves to hide the ruthless, power-hungry and sadistic monster he truly is.
- "Next of Kin": Onyx Adams is a far cry from her comics counterpart. Onyx was a former League of Assassins member from the 1700s who has somehow lived to the 2010s and became a CIA black ops operative before leading her unit in a mass desertion and the theft of $100 million. When some of her unit defected back to the CIA, Onyx decided to eliminate them in faked terrorist nerve gas attacks, twice killing a defector and dozens of innocents. Chasing the third and final defector to Star City, Onyx butchers her way through Kord Industries workers and security to steal more gas and sets a building on fire to mask her escape. Attempting to kill her target by sealing him inside a hotel with dozens of guests and gassing them all, Onyx releases the gas to distract Team Arrow with her men still inside while she chases the defector down.
- The Flash (2014):
- The Trickster, real name James Jesse, is a bloodthirsty terrorist with a flair for the dramatic and the personality of a deranged child. After a killing spree that landed him in prison, the Trickster is introduced by breaking free from prison with the help of his son Axel, who he manipulated and groomed into becoming as dangerous a psychopath as him. With his help, the Trickster takes Henry Allen hostage and tries to have him impaled with knives while also poisoning the guests at a party so he can blackmail them into giving him money, with one guest dying as a demonstration. During his second appearance, the Trickster uncaringly abandons Axel and teams up with Mark Mardon/Weather Wizard for a chance to kill the Flash. And to do so, he disguises himself as a mall Santa and distributes over a hundred gift-disguised bombs to children, and forces the Flash to let Mardon torture him to death on threat of detonating the bombs and killing the children and their families.
- Zoom, real name Hunter Zolomon, is a sociopathic speedster from Earth-2 and season 2's Big Bad. Originally a Serial Killer with 23 victims to his name, after getting Super Speed, Zoom reveled in terrorizing Central City. Left dying from abusing the Velocity drug, Zoom kidnaps Jay Garrick, the Flash of Earth-3, hoping to steal his speed to save his own life. When this fails, Zoom steals Jay's identity, acting as the Flash to create hope for the sake of destroying it as Zoom, while imprisoning the real Jay as a trophy. When the breaches to Earth-1 opened, Zoom plotted to force Barry Allen to become faster in order to steal his speed. Sending metahumans with orders to kill the Flash, Zoom also posed as Jay to earn Barry's trust. Over the course of the season, Zoom murders dozens of people, innocents, police, and his own minions alike. Confronting the Flash for the first time as Zoom, he brutally beats Barry, fractures his spine, and displays his broken body to all of Central City. Zoom also holds Harry Wells's daughter Jesse hostage, using her to try and coerce Harry into stealing the Flash's speed for him. After being cured of his condition, Zoom decides to terrorize Earth-1, unleashing an army of metahumans on Central City. When his army is defeated by the Flash, Zoom kidnaps Barry's father Henry, then murders him in front of Barry. As his endgame, Zoom intends to use a doomsday device to destroy the entire multiverse, sparing only Earth-1 to keep as his personal domain. A brutal, sadistic maniac devoid of remorse, Zoom is a terrifying monster who darkens every scene in which he appears.
- "A Whole World Out There": Jacob Shaw evaded punishment after getting caught by transferring his mind from his body to a Pocket Dimension found during his occult studies, where he essentially became a god-like Reality Warper, able to live out his sick fantasies as much as he wanted. When a group of teenagers accidentally trespasses into his realm, he takes this as an opportunity to live out his sadistic pleasure even more. He starts hunting the teenagers in the real world by appearing on reflective surfaces, driving them nearly insane, and then brutally killing 3 out of 4 via impaling, dismembering with a knife, and suffocation. Afterwards, he keeps the souls of the deceased in his realm, where he keeps on torturing them and tells them that they will experience a never-ending circle of getting hunted down and killed by him, all just because he enjoys it.
- "Waiting for the Man": "The Man" is introduced as a Satanic redneck who abducted three little girls and murdered them, afterwards raising their spirits to make them his mindlessly devoted "brides". He sends them off to find another bride for him, and while waiting for them to return he brutally tortures and murders a bypassing, helpful man in a ritualistic way, for seemingly no other reason than being near him at the wrong time. It is revealed that "The Man" also murdered his real wife six years ago as a sacrifice for Satan. Later, John and his crew arrive in the nick of time, just before "The Man" was going to subject the fourth girl to the same horrific fate his three brides suffered. "The Man" is such a despicable individual that John Constantine and Jim Corrigan decide to outright murder him instead of just having him face the law.
- Vixen: Benatu Eshu is a ruthless Zambesi warlord and season 2's Big Bad. Desiring the Totems of Zambesi, Eshu led a raid on Mari's village when she was an infant, massacring scores of innocents, upon learning that the village possessed the Anansi Amulet; among those killed was Mari's father, who Eshu callously executed when he attempted to stand against the madman. In the present, Eshu arrives in Detroit under the guise of an ambassador and continues his quests to find the totems. To achieve his goals, Eshu bribes a thief into stealing the Fire Totem for him, then promptly kills the man once he's no longer of any use. With the Fire Totem in his possession, Eshu attempts to kill Mari to steal the Anansi Amulet. Failing in this, Eshu goes on a city-wide rampage in a fit of homicidal rage, burning down a massive portion of Detroit in an effort to draw Mari out. When Mari and her allies attempt to stop him, Eshu incinerates Mari's sister Kuasa right before her eyes before trying to kill Mari herself. Even when he is stripped of the power of the Fire Totem, Eshu continues his attempt to murder Mari in order to steal her amulet and harness its powers for his own purposes.
- Supergirl (2015) (Earth-38):
- Season 1: Brainiac 8, known better as Indigo, is a Coluan imprisoned on Krypton for attempting to destroy the Kryptonian people. When she introduces herself on Earth, she turns every light in National City green, causing accidents and endangering hundreds of lives. Soon revealing her darker side, Indigo tries to launch nuclear missiles to destroy National City, planning to wipe out humanity. When defeated, she later teams up with Kara's uncle, Non, and activates Project Myriad to put humanity into a trance-like state. Indigo then puts her plan a step further into motion: to enhance the power to kill everyone else on Earth and then leave the planet, leaving Kara stranded as "queen of a dead world." Even in her last moments, Indigo gloats that she had left Project Myriad impossible to stop, taking comfort that humanity will follow her to the grave.
- Season 2: Veronica "Roulette" Sinclair is a ringmaster who organized an underground fight club in National City, commanding aliens to fight to the death for money to entertain rich people, including herself. In her first appearance, when J'onn and M'gann refuse to fight, Roulette releases Draaga to try to kill them both, but gets arrested. Upon being freed due to her connections, Roulette, with the help of an alien doctor, plans to sell humans in a slave market on Maaldoria in exchange for a large amount of diamonds. Utterly apathetic to aliens and human beings alike, Roulette is a Rich Bitch who has no qualms against making quick money at the expense of others.
- Queen Rhea, the ultimate Big Bad of season 2, is the queen of Daxam, wife of Lar Gand and mother of Mon-El. After escaping Daxam's disaster, Rhea and Lar Gand find Mon-El on Earth and try to get him to join them. When he refused, Rhea blames Kara for it and tries to get her killed by issuing a bounty against her, then tries to kill her herself. Once Lar Gand decides to let Mon-El stay on Earth, Rhea accuses him of "betraying" her and murders him. Returning to Earth, Rhea manipulates Lena Luthor into creating a transmatter portal for her forces to come through, and starts an invasion to take over the planet and reduce humanity into slavery. To forge a connection with humans, Rhea forces Mon-El and Lena to get married by threatening to destroy a hospital full of children, stating they could rot in a cell for all she cares afterwards. Challenged by Kara in a trial of fight, Rhea doesn't honor their agreement when she loses and orders her forces to destroy National City, then tells Kara that she will destroy city after city until her whole world is gone. A petty, self-centered individual as well as a horrible mother, Rhea's inability to accept any responsibility for her actions is what makes her a monster.
- Season 3: Morgan Edge, the CEO of Edge Global, is introduced as an incredibly unpleasant, self-absorbed and sexist man, but quickly proves himself to be much worse than just that. Having personal profitable plans for the Waterfront of National City, Edge hires a terrorist for an attack on the underwater foundation of the district, endangering hundreds of people attending a public Supergirl event. After Lena Luthor buys CatCo from under his nose, which he planned on remodeling into his own personal propaganda paper, Edge shows just how low he is willing to stoop to destroy somebody for a perceived personal slight: By poisoning an entire public school full of children and then blaming it on Lena's countermeasure against the Daxamite invasion. When Lena confronts him, he has her knocked out and strapped on a remotely controlled plane, carrying more of the poisonous chemicals, which he intends to crash on the city. Edge also shows himself to be completely dismissive of his employee's lives, having two them killed to protect his reputation after failed assassination attempts on Lena, or even using one of them as a Human Shield to save his own hide at one point. In a world full of superpowered menaces, Morgan Edge still manages to stand out as a despicable human being, only concerned with his own position of power.
- Black Lightning ("Earth-BL"): This series is not subtle about its villains, especially these two vile racists:
- Season 1: Martin Proctor is the man in charge of the Freeland operations of the sinister ASA. Repackaging a dangerous vaccine as a drug to circulate within his city to create an army of superpowered pawns, Proctor's plans lead to an epidemic of death while he takes the survivors in for experimentation. Forcing his rival Gambi into surrendering to him by holding a crowd at gunpoint, Proctor expresses sadistic disappointment at Gambi's surrender forcing him to spare their lives. Seeking to ruin hero Jefferson Pierce's reputation, Proctor allows his men to kill any in their way as they please and when his plans fall apart, aims to take the surviving teens from his experiments with him to continue his abominable operations on.
- "The Perdi" & "The Sange": The Looker is a metahuman with the power to control minds who enslaves the white population of South Freeland as her "Sange". When called out for her hypocrisy of claiming to have saved the town from a drug epidemic by her mind control being far worse, she casually murders him for questioning her. Viciously prejudiced, the Looker has her slaves hunt down and lynch the town's black population and stops at nothing to hunt down the children of a Sange to ensnare them in her racist, subservient cult.
- The Flash (1990) (Earth-90):
- The Flash's Arch-Enemy, Nicholas Pike, is a former police officer who was disbarred for his crooked involvement in criminal activities, swearing vengeance against Jay Allen for bringing his corruption to light. Forming a biker gang, the "Dark Riders", Pike had his cronies terrorize Central City, torching streets and killing anyone in their way. When one member leaves out of disgust, Pike cruelly kills him by having him dragged on a motorcycle with a bomb and then detonating it. He later murders Jay for revenge. Storming the jail to free his men Barry Allen has arrested, Pike intends to use them to destroy the entire city regardless of any causalities. In "Flashfoward", after being released from prison, Pike returns for vengeance on Barry, firing a heat-seeking missile at him which sends Barry ten years into the future. An utter dystopia with Pike as mayor, he forces citizens to submit to him lest he have them executed or lobotomized if they don't bow down to him. A smug and wicked man motivated only by petty revenge, Pike cements himself as one of the most evil and personal enemies that the Flash has ever faced.
- "Out of Control": Dr. Carl Tanner is an amoral geneticist who ostensibly wants to better world. In truth, to erase the "shame" of having grown up in poverty, Carl intends to perfect a mutative formula to allow him to wipe out the homeless "vermin" of the world, testing his formula on the vagrants of Central City and killing them through agonizing mutation. Lusting after and trying to mutate his former college sweetheart Christina McGee, Tanner eventually uses the formula on himself, rampaging across Central City in his new monstrous form and attempting to massacre the nearest homeless den.
- "Child's Play": Bougart/Beauregarde Lesko creates an insidious hallucinogen called "Blue Paradise", which becomes rampant in Central City. Creating a powerful physical addition, if users do not regularly take Blue Paradise, they die, much to Lesko's apathy. When suspected in the drug's production by a reporter, Lesko kills him by blowing up his car to destroy the evidence, also trying to murder a teenager who manages to get ahold of it. Trying to force the teen into addiction to control him, Lesko also tries to spread his drug over the city via helicopter, not content until he can control the entire population with his drug.
- "The Trickster" & "Trial of the Trickster": James Montgomery Jesse, better known as "The Trickster", is an insane criminal mastermind with a penchant for numerous murderous personalities and gimmicks leading to a string of murders over six states. Adopting the persona of the Trickster after he's smitten by private investigator Megan Lockhart—after failing to saw her in half—the Trickster murders the cops who try to detain him; leaves an exploding Flash statue in a public square; takes the customers of a novelty shop hostage while murdering one of them for giggles; and attempts to drown Barry Allen in his twisted crusade to make Megan his criminal sidekick "Prank". Busted out of prison in his second appearance by his twisted fangirl Zoey Clark, the Trickster butchers the host of a talk show and announces his new crime spree, torturing and brainwashing the Flash into his sidekick while causing wanton mayhem throughout Central City and endangering the lives of countless innocents. The Trickster finally tries to hold a "trial" for the city by killing those who prosecuted him after ruling them "guilty against crimes of good taste!" and, even after this is thwarted, ditches Zoey to the police even after she saves him. Zany, witty, and absolutely in love with his own murderous psychosis, Jesse's tricks murdered countless innocent people and cement him as one of the Scarlet Speedster's worst foes.
- Mobius, the Anti-Monitor, is a being born of the antimatter universe. Manipulating Dr. Harrison Nash Wells into freeing him, Mobius sadistically curses him to be his "herald", "Pariah", forcing him to try to warn universe after universe of Mobius's coming, to no avail, all while Mobius obliterates them, feeding on the new antimatter he leaves in its place. After consuming countless universes, Mobius wipes out almost all existence and engineers the death of of his goodhearted counterpart Mar Novu, the Monitor. Upon his actions being reversed, Mobius simply returns to obliterate existence again, to rule over what remains as its god king.
- Batwoman (2019): Miguel Robles, a corrupt member of the Crows, is also the murderer of Lucius Fox. Having accidentally shot Fox when sent to beat him for his journal, Robles attempts to cover his tracks by sending assassins after those who can expose him. When this fails, Robles takes on the mantle of the deceased Detonator, kidnapping people and tying them to explosives with chances to save themselves by pressing a detonator to destroy a building that contains information that might incriminate him. His final target is Wayne Tower, uncaring if he kills dozens or hundreds of innocents to escape his punishment.