Star City: Team Arrow (Oliver Queen / Dinah Laurel Lance) | Family Members | Citizens | Criminal Groups (Malcolm Merlyn / Slade Wilson / Prometheus) | Independent Criminals
Central City: West-Allen Family (Barry Allen / Iris West-Allen) | Team Flash (Caitlin Snow & (Killer) Frost) | Citizens | Criminal Groups (Rogues / Clifford DeVoe) | Independent Criminals
National City: Citizens (Kara Zor-El) | Luthor Family & Associates (Lena Luthor / Lex Luthor) | Criminals
Freeland: Pierce Family | Citizens | Criminals
Gotham City: Bat-Family | Citizens | Criminals
Smallville & Metropolis: Smallville Citizens | Metropolis Citizens | Metropolis Criminals
The Legends: The Team | Current Members (Sara Lance) | Former Members (Leonard Snart / Mick Rory)
Organizations: U.S. Government | U.S. Military | A.R.G.U.S. | The D.E.O. | The J.S.A. | The League of Assassins | Criminal Groups (H.I.V.E. / Savage & His Followers)
Time Travel: Time Travelers (The Legion / Eobard Thawne / Damien Darhk / Savitar) | The Past | The Future
Miscellaneous: Other Locales | Metahumans (Firestorm / The Hawks) | Aliens | Mystics | Other Entities (The Speed Force & Forces of Nature)
The Multiverse: Other Earths | Earth-2 (Hunter Zolomon) | Earth-38 | Earth-90 | Earth-X | Bizarro World
BEWARE OF SPOILERS!
Luthor Family & Associates
A wealthy and very prominent family.
- Alliterative Family: Parents Lionel and Lillian, and children Lex and Lena.
- Badass Normal: The Luthors we've seen are all highly educated, obscenely rich, and ridiculously intelligent humans that can solve problems even Kryptonians and Martians are helpless against.
- Big, Screwed-Up Family: Half of the family are sociopaths (Lillian and Lex), one is an Ambiguously Evil adulterer (Lionel), and the remaining one is a good person but has tons of issues (Lena).
- Black-and-Gray Morality: All of the notable Luthors have dodgy morals or end up being morally bankrupt. Lillian and Lex are proud villains, Lionel was Ambiguously Evil, and Lena is prone to Jumping Off the Slippery Slope.
- Evil, Inc.: Lex's tenure as CEO had him use the company's resources for his Obviously Evil plans. This is the reason why Lena renamed the company.
- Feuding Families: They and the surviving members of the House of El have a very tense relationship.
- Fiction 500: They are filthy rich.
- Gender-Equal Ensemble: Lex and Lionel are male, Lena and Lillian are female.
- MegaCorp: They own and run LuthorCorp (currently L-Corp), one of the most prominent companies in the world.
- Men Are the Expendable Gender: Lionel is a Posthumous Character while Lex was killed in the Season 4 finale. Lex comes Back from the Dead the following season, though.
- Renamed the Same: In order to start over, Lena renamed LuthorCorp to... L-Corp.
- Screw the Rules, I Have Money!: Lex is the most blatant, being a Corrupt Corporate Executive. Same goes for Lillian. Lena, while having noble intentions, is willing to do illegal experiments to achieve her goals.
- Where Does He Get All Those Wonderful Toys?: They're quite wealthy, so they can afford all those top-of-the-line technology equipment they have.
Portrayed By: Brenda Strong
First Appearance: "The Adventures of Supergirl" (Supergirl 2x1)
The leader of Cadmus, who largely concerns herself with acquiring new test subjects and technology. Also the mother of Lex and adopted mother of Lena Luthor.
- Absurdly Youthful Mother: Brenda Strong is only a few years older than Jon Cryer.
- Abusive Parents: Even towards her supposed favorite son Lex.
- Adaptational Villainy: In the comics and most media, Lex Luthor's mother is portrayed as the lesser evil of his parents. Here, Lex clearly got his worst traits from her, and it is implied that Lionel was the lesser evil.
- Affair? Blame the Bastard: Lillian admits she took out the fact Lena's her husband's child with another woman hard, and treated Lena coldly as a result. She apologizes for this, saying it was wrong.
- Agree to Disagree: Responds this to Supergirl in "The Darkest Place" after she calls her crazy for defending Lex's actions while accusing the Kryptonian cousins of poisoning the Earth.
- Ain't Too Proud to Beg: She unashamedly begs for Kara's aid in saving Lena from Rhea.
- Alliterative Name: Lillian Luthor.
- Attack Drone: She sends several of these after Morgan Edge when she tries to kill him in Season 3.
- Bad Boss: "Volunteers" her assistant to be Metallo II. Said assistant is not pleased.
- Big Bad: Of the first half of Season Two, as she plans to get rid of the aliens on Earth. By the finale she's overshadowed by Rhea.
- Bitch Slap: The first thing she does after making Supergirl exhaust her powers in "The Darkest Place" is to slap her with enough force to make her bleed.
- Blade Below the Shoulder: The Lexosuit she wears in season 3 has a retractable blade in the right arm. Interestingly, it's the only Lexosuit to be shown to have this.
- Broken Pedestal: After finding out that Lex planned to have her killed, she loses all love for him, and has no problem trying to kill him with poisoned tea in "The Quest for Peace".
- Composite Character: Has the name and basic character of Smallville's Lillian Luthor, but her scientific endeavors and vendetta against Superman are taken from Earth One Lex.
- Commuting on a Bus: After season 2, she makes infrequent appearances throughout the show. She shows up more in the Post-Crisis episodes.
- Didn't Think This Through: She was emotionally abusive to Lex and taught him that Love Is a Weakness. She's completely shattered to find out that Lex doesn't love her at all, but in fact hates her and wants her dead both for Revenge and because she's a loose end.
- Disc-One Final Boss: She serves as the main villain for most of Season 2. However, Queen Rhea ends up supplanting her as the true Big Bad.
- Even Evil Has Loved Ones: Despite her own admitted Parental Favoritism towards Lex, she does admit to loving Lena in her own way, and proves it when she secretly begs Kara for her assistance in rescuing Lena from Rhea before the President carries out her orders. Eventually she becomes more protective of Lena than she does of Lex, even demanding she be spared from his plan to wipe out anyone who hasn't been brainwashed by his Obsidian plan.
- Even Evil Has Standards:
- Her Fantastic Racism of aliens makes her the Dominion's enemy, though part of it is that if anyone is going to rule the world, it's going to be a Luthor, not a race of alien conquerors.
- During the Season 4 finale, when Lex has herself and Lena brought to the White House, she attempts to poison him, as his madness has gone too far, even for her taste.
- She was also willing to sell her share of Luthor Corp to Lena in the event that Lex incriminated himself at his trial. Him being acquitted rendered this a moot point
- Evil Matriarch: The mother of Lex and Lena who claims that her actions against aliens are for the sake of her children. The way she talks, it seems as though Lex's own xenophobia is derived from hers.
- Evil Redhead: She's played by Brenda Strong, after all.
- Evil Versus Evil:
- She plays a large role in the defeat of the Daxamite invaders in the finale of season 2.
- In her only appearance in Season 3, she attempts to kill Morgan Edge, who is just as evil if not moreso than she is.
- Fake Ultimate Hero: Loves to prop herself up as humanity's ultimate savior from the alien menace just like her momma's boy Lex Luthor. However, the acute Lack of Empathy, coupled with her cruel willingness to endanger thousands, if not millions, of human lives, ultimately defeats this vision she has of herself.
- For Your Own Good: It's implied that she wouldn't mind taking over the world and enslaving the rest of humanity to "protect" it from aliens like Kryptonians and Martians.
- Hated by All: None of her children can stand her. Even Lex, her favorite, resents how she was emotionally abusive towards him by trying to teach him Love Is a Weakness and allowed his private tutors to administer excessive corporal punishment if he slipped during his studies. He goes so far as to rip her eyes out of her portrait in the Luthor Family Mansion.
- She accuses Superman and Supergirl of "pretending at honor" and believes them to have "the ego of gods". Her own methods are decidedly less than honorable, and she is highly smug herself.
- She accuses aliens like Kryptonians and Martians of wanting to Take Over the World, when it's implied that she herself would be willing to do the exact same thing in the name of "protecting" humanity.
- She claims to care about humanity, but seeing how she endangered many lives with Cadmus' terrorist attacks, those words are nothing short of empty.
- In "Resist", she tells both Supergirl and Lena not to let their Pride blind them. This from the woman who let her pride in her own son blind her to the truth.
- In "All About Eve", she mocks Lena for having emotional attachments, and for being sentimental, despite the fact that she holds deep attachment and sentiment toward Lex. When she learns that Lex has her lined up for assassination, she is utterly shattered.
- Iconic Sequel Character: Doesn't appear in the show until its second season (and in the Arrowverse until the fifth year).
- Insane Troll Logic: She blames Superman for Lex being a villain out of envy toward the Man of Steel because Mama Didn't Raise No Criminal.
- I Warned You:
- When she goes to the heroes to offer her help during the Daxamite invasion at the end of season 2, she doesn't resist to rub it in their faces that she had always warned of the danger posed by aliens.Lillian: Everything I warned against has come to pass. The alien invaders have come to destroy our way of life and claim our planet, just as I said they would.
Winn: You can just say, "I told you so."
Lillian: I did tell you so.
- Also, she smugly says this when Lena comes to visit her in prison and shows her that Lex had the blueprints for her cell in "All About Eve". However, she changes her mood when Lena points out that he was not planning to free her, but to kill her.Lillian: I hate to say I told you so...
Lena: Really? Because I just love saying it.
- When she goes to the heroes to offer her help during the Daxamite invasion at the end of season 2, she doesn't resist to rub it in their faces that she had always warned of the danger posed by aliens.
- Karma Houdini: Post-Crisis, she is free again with no known criminal record, running the LuthorCorp Foundation, and in cahoots with Lex.
- Kill Me Now, or Forever Stay Your Hand: When she comes to offer her help to the heroes against the Daxamites, she tells them that they can either shoot her or work with her to save the world.
- Knight Templar Parent: Whatever her faults are, she does not screw around when it comes to protecting her daughter. Just ask Morgan Edge.
- Laser-Guided Amnesia: In the Season 6 premiere Lena uses Myriad to remove Lillian's knowledge of Supergirl's identity from her mind alongside Lex's in order to keep Kara safe.
- Mad Scientist: She altered a virus so that it only targeted non-human life and is evil to the core.
- Mama Bear: Tried to straight-up murder Morgan Edge after he tried to kill Lena one time too many.
- Mythology Gag: The first names of both her and her husband are directly taken from their counterparts on Smallville.
- Never My Fault: Or better said, "Never My Family's Fault." In Lillian's eyes, her beloved genius of a son is the innocent victim of Superman's vanity and need to be viewed as the superior specimen, and her anti-alien crusade, even at its most extreme, is a perfectly justifiable way to defend Earth and humanity. As one of the most iconic flaws of Lex's comic counterpart is a blatant refusal to take responsibility for his actions, Lillian is probably where Lex learned this trait from.
- Nice Job Fixing It, Villain: The Medusa virus is so easily reverse-engineered that it's not only used as a cure for aliens infected with the disease, but also cures J'onn of his White Martian infection.
- Non-Action Big Bad: She always has someone else do the fighting for her.
- Except in season 3, where she uses a Lexosuit to fight Supergirl and Mon-El by herself.
- Not So Above It All: When Lena is in legitimate danger after being kidnapped by Rhea, Lillian isn't above begging for Kara and the DEO's aid in rescuing her.
- Outliving One's Offspring: Her son Lex is killed at the end of the fourth season, albeit not for long.
- Parental Favoritism: She makes no secret about the fact that Lex is her favorite child. She says every parent favors one child above the others. She eventually admits that Lena's biological paternity played a role in this. Ironically, Lex hates her just as much as Lena does. She eventually switches her favoritism to Lena, once she realizes just how nuts Lex is.
- Powered Armor: She borrows Lex's Lexosuit in "For Good" to try and kill Morgan Edge. It's powerful enough to give Supergirl and Mon-El a really good fight.
- Pragmatic Villainy: During a chat with Lex, Lillian chides him for quoting Hitler; as she puts it, doing so is "bad for the brand".
- Post-Crisis, she tries to talk Lex out of killing Supergirl because she is more useful as an ally, and his obsession with killing Kryptonians has already led to his death once.
- Psychotic Smirk: Almost constantly sports one.
- Seen It All: After Lex informs her of the events of the Crisis, including the destruction of the Multiverse and the fact that he technically isn't her actual son, Lillian doesn't react much, which surprises even Lex.Lex: You're rather calm for a woman who just learned the entire Multiverse has been obliterated. You do understand I'm not the son you raised?
Lillian: Perfectly. Would your Lillian have been frightened by world destruction? If so, you've upgraded.
- She Knows Too Much: Ironically enough, her own son Lex wants to have her eliminated in "Crime and Punishment" to prevent her from revealing what she knows about his shady activities at the prison of Stryker Island.
- Smart People Play Chess: She's occasionally shown playing chess with her son, both during his childhood and in the present. She can't beat him, though.
- Smug Snake: Even when threatened, she's unflappable in her confidence.
- Spared by the Adaptation: Depending on the Writer, but she's usually a Posthumous Character in the comics and most adaptations.
- Statuesque Stunner: She looks good and, at 5'11 1/2, she is the tallest woman on both the entire show and franchise.
- Tall, Dark, and Snarky: She's the tallest woman in the entire show (and Arrowverse as a whole) and frequently displays sociopathic behavior.
- Tampering with Food and Drink: By the end of season 4, even she is fed up with Lex's madness, to the point that she decides to put poison in his tea. Unfortunately, he manages to notice it.
- That Liar Lies:
- She accuses Supergirl of lying when she tries to warn her that John Corben's kryptonite heart is unstable and is going to explode in "Luthor".
- In "Exodus", she also claims that Alex must be lying when she says that she has planted mines in her base and threatens to detonate them. She's not.
- The Unfettered: She will take any measures to wipe out aliens on Earth, even deliberately put human lives in danger just to turn public opinion against aliens.
- Ungrateful Bastard: Sees Supergirl help stop the alien invasion in Season 2's finale? Doesn't care, she backstabs her anyway, just because she is an alien.
- Villain Ball:
- She honestly didn't consider that, when faced with enemies powered by a substance that could kill them, Superman and Supergirl would think to bring along some back-up.
- She accepted Lena coming over to her side a little too readily, considering she made no secret of the fact that she considered her The Unfavorite. This is what causes her downfall.
- Villain: Exit, Stage Left: When she realizes Supergirl's not lying about Metallo exploding, she and Cyborg Superman quickly beat feet.
- Villain Has a Point: In one of the Flashback scenes in "Deus Lex Machina", she points out to Lex that his hatred for Kryptonians is holding him back, and that working with Supergirl in the new timeline would be more beneficial.
- Villain with Good Publicity: She's hailed as a hero who fought in the Alien Invasion during the Season 2 finale, which is technically true.
- We Can Rule Together: Tries to recruit Alex, playing on her frustration with Supergirl. She later tries to goad her stepdaughter Lena to join her, as well. She was rejected both times.
- We Have Reserves: She basically says this to her assistant before he Got Volunteered to be Metallo II.
- Wicked Stepmother: She makes clear that she hates Lena as she is the product of her husband's infidelity. This included bribing her school boyfriend to dump her, exiling her to boarding school, and leaving her to die with Supergirl when Metallo was about to explode. However, in later episodes she teams with Supergirl to save Lena from the Daxamite ship, tries to kill Morgan Edge after he tried to kill Lena, and finally admits to Lena that she loves her while under the influence of a truth seeker.
- Worth It: When she returns to National City to help her daughter against Morgan Edge in season 3, she tells her that she's taking huge risks coming to see her while she's on the run, but she considers it worth it.
- Worthy Opponent: After Supergirl defeats Corben and calls Cadmus out, she smiles grimly and pronounces, "Then it begins."
- You Have Failed Me: If you work for her and get caught, she'll see to it you never talk.
Portrayed By: Ian Butcher
First Appearance: "Luthors" (Supergirl 2x12)
- Adaptational Nice Guy: He is usually depicted as an Abusive Parent in the comics and most adaptations. Here, he's Ambiguously Evil, but Lena thinks very highly of him. That said, Lex's comments from "The House Of L" paint him in a darker light (with Lex saying his staying with his family was worse than his leaving) and he apparently was a drunk, so perhaps he wasn't so nice after all.
- The Alcoholic: In "The House of L", Lex mentions that his father was an alcoholic, a claim that Lena doesn't dispute.
- Alliterative Name: Lionel Luthor.
- Ambiguously Evil: While Lena certainly thinks that he's a good man, Lillian disputes it. However, it may well just be bitterness on Lillian's part due to him cheating on her. Lex also doesn't seem to have many fond memories of him, but then again it is Lex, so who knows. Maybe he just liked Lena.
- Black-and-Gray Morality: He is Ambiguously Evil, but his wife certainly isn't.
- Hereditary Hairstyle: Or lack thereof, as both he and his son are bald.
- Mythology Gag: The first names of both him and his wife are directly taken from their counterparts on Smallville.
- The Patriarch: Of the Luthor family, at least until he died.
- Posthumous Character: Lillian and Lena talk about him in past tense.
Portrayed By: Andrea Brooks
Voiced By: Mónica Manjarrez (Latin-American Spanish dub)
First Appearance: "The Adventures of Supergirl" (Supergirl 2x1)
Cat's new assistant following Kara's transition into a reporter.
- Adaptation Dye-Job: Downplayed. While the character is blonde in her source material, Valerie Perrine's version had dirty blonde hair while Andrea Brooks's is golden blonde.
- Adaptational Badass: The original version of Eve Teschmacher was little more than arm candy for Lex Luthor. This version has a genius-level intellect, impressive fighting skills and Self-Duplication powers, courtesy of Lex.
- Adaptational Heroism: She's Lex Luthor's secretary in her source material. Here, she works for Cat Grant briefly, then becomes James Olsen's assistant. It is actually subverted, as we learn in Season 4 that she's been on Lex's payroll the entire time.
- Affably Evil: Although much nastier than she ever pretended to be, Eve's perky exterior is no act; she maintains it even around Lex, and later claims to have been genuinely fond of Lena and Kara. It's later revealed that her reason for working with Lex Pre-Crisis was to manipulate him on Leviathan's behalf.
- Age Lift: Valerie Perrine was in her mid-thirties when she played the role in Richard Donner's first Superman movie. This version of Eve is played by Andrea Brooks who was in her late twenties at the time. And even if Vague Age is at play, the Earth-96 version is clearly in her late 20s in both cases.
- Almighty Janitor: Eve studied Nuclear Physics at Yale, yet she seems perfectly content working as a personal assistant at CatCo. She's eventually poached by Lena for work more befitting her education. Considering she's actually working for Lex, this deception was quite intentional.
- Beleaguered Assistant: She didn't quite adjust to Cat. James and Lena are less demanding.
- Bitch in Sheep's Clothing: While she was seemingly nice and easygoing, she's been on Lex's payroll the entire time.
- Brainwashed: In Season 5, Lena has Hope purge all negative emotions from her brain and amplify her loyalty.
- The Cameo: She makes a quite surprising appearance on The Flash when, while working late in James's office one night, she witnesses a battle between two Vibe-powered individuals before both vanish as quickly as they came.Eve: Is it just me or is this city getting weirder?!
- Co-Dragons: With Otis Graves, to Lex.
- The Cutie: Good-looking, adorable, and upbeat. Her attitude doesn't appear part of her act, as she retains a certain perkiness while holding Lena at gunpoint.
- Double Reverse Quadruple Agent: Turns out she wasn't working for Lex the entire time and was working for a secretive organization called Leviathan, who ordered her to be on Lex so he could "move the needle."
- Even Evil Has Loved Ones: She used a sample of Harun-El to cure her cousin's terminal cancer. Post Earth mergers, her motivation for working with Lex and Leviathan is to keep Lex from harming her mom.
- Even Evil Has Standards: Eve is initially unsettled by the violence of Lex's methods, and his plan to give himself cancer leaves her aghast.
- Evil All Along: She's on Lex's payroll and has been the entire show.
- Evil Costume Switch: Eve is usually seen in demure clothes with bright colors. As she's revealed as Lex's henchwoman, she wears a formfitting dark blue dress.
- Hidden Depths: To be inferred, since Cat has an amazing eye for talent. If she didn't, she'd have been fired already. Turns out also that she's a scientist who graduated from Yale.
- Iconic Sequel Character: Doesn't appear in the show until its second season (and in the Arrowverse until the fifth year).
- Ignored Enamored Underling: Eve is madly in love with Lex, who values her well-being about as much as he values pocket lint, although he's happy to let Eve believe otherwise as long as she's useful to him.
- Laser-Guided Amnesia: Thanks to the Cosmic Retcon brought about by the destruction and rebirth of the multiverse, Eve no longer remembers her actions during season 4, those memories having been overwritten by a new history.
- Loony Fan: Subverted. She shows too much devotion to Lex and she even gets compared to a Charles Manson fan by him, but she is just doing so under Leviathan.
- Me's a Crowd: Courtesy of Lex's experiments, Eve gains Kopy's abilities, now being able to duplicate herself, but with the copies becoming progressively less intelligent over time.
- New Meat: She's Kara's replacement intern introduced in Season 2.
- Not What It Looks Like: Eve lamely invokes the trope verbatim when she and "Mike" are caught half-undressed and making out, her legs wrapped around him.Kara: This is the definition of something being what it looks like!
- Phrase Catcher: "MISS TESCHMACHER!!!"
- Promotion to Opening Titles: After being a Recurring Character since Season 2, she's finally added into the opening credits in Season 5.
- Shipper on Deck: After picking up that Mon-El and Kara have feelings for each other, she subtly gives Kara a nudge to act upon them.
- Trapped in Villainy:
- The Season 4 finale reveals that she actually isn't a Loony Fan of Lex; instead, she was being forced by a mysterious organization named Leviathan, who still has her under their thumb.
- Then again in Season 5. Lex promises to free her from Leviathan's grip....only to manipulated her into being his unwilling assassin. He tricks her into killing Jeremiah Danvers, lying to her about him being her father's killer and then confronts her with the fact that she killed Supergirl's father, as well as with holding her mother hostage.
- Unwitting Pawn: Post-Crisis, Eve is seemingly rescued from service to Leviathan by Lex, only to find that he's been using her as a weapon against the heroes and Leviathan alike to both advance his goals and get some deeply petty vengeance on Eve for her pre-Crisis treachery.
Portrayed By: Rhona Mitra
First Appearance: "American Alien" (Supergirl 4x1)
Lex and Lillian Luthor's former bodyguard and head of security at LexCorp and Cadmus, respectively. Becomes the right-hand woman to Ben Lockwood/Agent Liberty.
- 0% Approval Rating: After Mercy's death, nobody seems particularly sorry to see the end of her; Lockwood is more concerned about losing Mercy's resources than about losing her, Lex didn't bother to resurrect her as a Metallo as he did with Otis, and Otis only mentioned her once since her passing.
- Adaptation Dye-Job: While still an Aloof Dark-Haired Girl, she's normally depicted with jet black hair. This version instead sports dark brown hair.
- Adaptation Species Change: Mercy is an inconsistent case, portrayed as either a Badass Normal human or an Amazon (or, at least, of Amazon ancestry). This version is human.
- Adaptational Personality Change: This version is an Absolute Xenophobe much like Lex, while most others beforehand could care less if her enemy is alien or human.
- Aloof Dark-Haired Girl: She's a brunette and a ruthless criminal.
- Asshole Victim: Her death at the hands of a Hellgrammite was well-deserved.
- Brains and Brawn: The Brains to Otis's Brawn. Mercy outmaneuvered Supergirl twice in her debut episode, the first time by grounding Supergirl with a pair of gravity cuffs and the second time by exploiting Supergirl's Chronic Hero Syndrome to get away cleanly.
- Co-Dragons: Along with her brother Otis, she used to be this to Lex, and later to Agent Liberty.
- The Corrupter: Mercy tries to get Lena on her side by appealing to her sense of being left in Lex's shadow. It doesn't work, although Mercy has more luck with DEO Agent Jensen.
- Dark Action Girl: Able to fight on equal footing with Alex and get away unharmed.
- Dragon-in-Chief: Though Agent Liberty is the public face of the Children of Liberty, Mercy is the one with the resources and has no problem ignoring him if she feels like it. Which makes sense since her entire involvement with Lockwood is because Lex ordered her to get involved.
- Even Evil Can Be Loved: Lena once considered Mercy a friend, and the one time Otis mentions her post-mortem, he sadly expresses that he misses her.
- Evil Cannot Comprehend Good: Mercy seems genuinely incapable of understanding that not everyone is as xenophobic as she is. She denounces Lena as an "Earth traitor" for refusing to join Mercy's crusade and seems utterly baffled by Alex defending Supergirl.
- Fantastic Racism: Worked for not one, but two anti-alien extremist groups and called Supergirl a filthy roach.
- Fatal Flaw: As Lena says, Mercy emphasizes offensive tactics and neglects her defenses. True to form, her death comes about because she doesn't pay attention to the Hellgrammite that fatally skewers her.
- Faux Affably Evil: Mercy's thin attempts at courtesy just make her even more despicable. The only people she actually seems to get along with are other xenophobes like herself.
- Foolish Sibling, Responsible Sibling: The Responsible Sibling to Otis's Foolish Sibling.
- Hate Sink: Mercy is a callous, hypocritical, and self-righteous psychopath out to slaughter aliens out of pure racism. She also tries to corrupt other people to her way of thinking and is baffled that not everyone is as xenophobic as she is. She doesn't even have Agent Liberty's Freudian Excuse or principles to mitigate how awful she is.
- Hypocrite: Despite her pro-human rhetoric, Mercy has no qualms about killing humans even when it's not necessary; she even enjoys it. She doesn't limit herself to "Earth traitors", either; she murders an L-Corp employee to steal his laptop and tries to kill Agent Jensen, who had helped her, for supposedly being a loose end.
- Knight Templar: She'll do whatever it takes to defend her country and humanity from the "alien menace". Even if innocent humans get killed in the crossfire.
- Mook Carryover: In-Universe, she has worked with Lex, then with Lillian at Project CADMUS, then (currently) with Ben Lockwood at the Children of Liberty. Though she was only working for Lockwood on Lex's orders.
- Patriotic Fervor: Her reason for aligning with both Cadmus and the Children of Liberty. Mercy believes she's protecting her country by attacking and exposing President Marsdin as an alien.
- Related in the Adaptation: While Mercy Graves and Otis are both commonly seen as Lex Luthor's lackeys in different continuities, this is the first one in which they appeared together and are directly related (as brother and sister) to boot.
- Siblings in Crime: Works in a coordinated and effortless manner with her brother when they steal an EMP.
- The Sociopath: Despite her claims of patriotism and putting Earth first, Mercy doesn't have a shred of empathy, murders fellow humans with glee, and seems genuinely confused that all humans don't despise "roaches" as much as she does.
- The Stoic: Maintains a calm and indomitable demeanor, even when in the midst of danger.
- Talking Is a Free Action: Averted; Mercy is killed by a Hellgrammite while she's distracted ranting at Alex.
- We Used to Be Friends: Mercy acted as a surrogate big sister to Lena when she was younger. Suffice to say, by the modern day, they're not quite as close.
Otis Graves / Metallo III
Species: Human (Enhanced via technology)
Portrayed By: Robert Baker
First Appearance: "American Alien" (Supergirl 4x1)
Mercy's brother and a former bodyguard at LexCorp. Also a member of the Children of Liberty.
- Adaptation Dye-Job: He has dark brown hair while the original version played by Ned Beatty has salt-and-pepper (brownish gray) hair.
- Adaptational Badass: Unlike his original Fat Comic Relief version, Otis is now a dangerous, competent criminal, although he's still acknowledged as not especially bright.
- Adaptational Curves: He's notably more physically fit compared to the original version played by the pudgy Ned Beatty.
- Affably Evil: Post-revival, he shows a much more genial, friendly nature, even saving a little boy from Lex's plans and amicably chatting with Lockwood before trying to kill him.
- Ax-Crazy: Claims he's not having (too much) fun cutting off an alien's arm tusks with a laser scalpel, while giggling and unnecessarily cutting off the other one when he only needed the first tusk.
- Back from the Dead: Is alive again Post-Crisis, though seemingly without his upgrades.
- Came Back Strong: He is resurrected as Metallo III.
- With his sister Mercy, to Agent Liberty. Later with Eve Teschmacher to Lex.
- Dumb Muscle: While he's no slouch in a fight, especially after being rebuilt as Metallo III, Otis is about as sharp as a bag of hammers, although he does have the occasional flash of insight or common sense.
- Even Evil Has Loved Ones: As awful as they both are, Otis does express some sadness after Mercy is gone, showing that he cared about his sister.
- Even Evil Has Standards: He can't bring himself to kill Mikhail, an innocent boy, for one of Lex's scheme, having "died" himself.
- Evil is Petty: He stomps on a child's toy with a smile, telling the boy that it's a "metaphor for life".
- Foolish Sibling, Responsible Sibling: The Foolish Sibling to Mercy's Responsible Sibling.
- Jerkass: Mercy at least pretends not to be completely vile sometimes. Otis is a shameless jerk at every available opportunity.
- Hidden Depths: For Dumb Muscle, Otis turns out to have some pretty serious and well thought out criticisms of the press.Otis: I don't trust the press. They always parachute into crises like this without any context for the larger systemic issues at play.
- Killed Off for Real: After at least two resurrections, Lockwood kills him for good after ripping out his Kryptonite heart, after Otis tries to kill him himself.
- Lack of Empathy: Otis shrugs off killing a DEO agent who assisted the Children of Liberty, remarking that he wasn't human, he was "loose ends".
- Named by the Adaptation: He is an Only One Name character in the Richard Donner films, but due to this version being Related in the Adaptation with Mercy Graves, he was given her surname.note
- Psychopathic Manchild: He acts extremely immature, much to the ire of his sister. Doesn't make him any less of a threat.
- Related in the Adaptation: While Otis and Mercy Graves are both commonly seen as Lex Luthor's lackeys in different continuities, this is the first one in which they appeared together and are directly related (as brother and sister) to boot.
- Siblings in Crime: With Mercy.
- Slasher Smile: Otis is a Perpetual Smiler, and his many acts of violence mean that this is a common expression of his.
- The Sociopath: Just like his sister, although Otis is much more low-functioning; he's a sadist with no empathy who carries out acts of petty cruelty with a wide grin. Possibly subverted, as he secretly saved Mikhail from Lex's attempt to murder the boy.
- Took a Level in Badass: Becomes the third version of Metallo after his reanimation and he seems considerably more powerful than his predecessors.
- Took a Level in Kindness: While still a villain, Otis becomes a lot more genial after being resurrected as a Metallo.
- We Can Rebuild Him: Twice. At first after his death at the hands of the Hellgrammite and later when Lex remotely blows him up.
Species: Artificial Intelligence
Voiced By: Kari Wahlgren
Portrayed By: Andrea Brooks
First Appearance: "Event Horizon" (Supergirl 5x1)
An A.I. created by Lena Luthor to help her change the world for the better.
- Adaptational Species Change: She is possibly based on the main DCU character Hope Taya, an Amazon bodyguard for Lex Luthor. This version is an artificial intelligence, and thus not even really human, or an organism at all. At first, anyway.
- Benevolent A.I.: So far, at least. She is explicitly unable to harm any living being, which is why Lena sees her as the perfect template for a better future.
- Number Two: To Lena in Season 5.
- Taking the Heat: Inside Eve, she confesses to be responsible for using Myriad so she gets arrested and Lena, the real culprit, doesn't.
- Wetware Body: After she takes over Eve's body at Lena's command.
- What Happened to the Mouse?: Her fate post-crisis is unclear, as Eve is back in control of her body. She might not even have existed in the new timeline.