BEWARE OF SPOILERS!
Species: Human note
Known Aliases: The Guardian
Portrayed By: Mehcad Brooks
Voiced By: Manuel Campuzano (Latin-American Spanish dub), Makoto Tamura (Japanese dub)
CatCo's former art director, whom Kara had a crush on. He becomes CatCo's CEO when Cat decides to take a long, possibly permanent, sabbatical. After growing listless of seeing Kara save the city, especially with her cousin, James decided to get into the crime-fighting business himself; using armor created by Winn, he became a vigilante under the code name "Guardian".
- Adaptational Attractiveness: Though the original Jimmy isn't exactly unattractive, he was a nerd as opposed to the show's "alpha male."
- Adaptational Badass: While the original Jimmy Olsen was no pushover, this version is a skilled combatant and a top athlete. Who with only a suit of armor and shield takes to crime fighting with surprising ease. He later briefly gains superpowers after getting healed with the Harun-El.
- Adaptational Curves: Jimmy Olsen is mostly depicted with Geek Physiques or at least average built. This one is an obvious Hunk, though it is possible that he used to be Black and Nerdy when he was at the Daily Planet and just beefed-up since. After all, he is mostly depicted as a nerd in Superman's story.
- Adaptation Dye-Job: A redhead in the comics, this Jimmy is bald, and has black hair otherwise.
- Adorkable: Downplayed due to his Older and Wiser, but still there. He still wears the Signal Watch, among other things. He also named Reactron.
- Anti-Hero: He is The Cowl to Kara's The Cape, similar to the dynamic Batman and Superman share in the comics. He is willing to threaten and rough people up while questioning them, among other things.
- Attack Reflector: Guardians Shield reflected Parasite's punch in Season 2 Episode 6.
- Badass Baritone: James's already deep voice is electronically lowered as Guardian.
- Badass Normal: He's got a black belt, and is more than capable of defending himself even without powers. Later briefly an Empowered Badass Normal.
- Bald, Black Leader Guy: After Cat Grant appoints him as her replacement as head of CatCo.
- Bash Brothers: With Winn since becoming Guardian.
- Benevolent Boss: In Season 2, becomes Cat's successor at CatCo. He offers to strong arm Snapper for Kara into letting her work, but at that point, Kara is determined to earn her reporter job.
- Betty and Veronica: He's the Tall, Dark, and Handsome Hunk (Veronica) contrasting Winn's Adorkable Nerd (Betty).
- Blessed with Suck: In a way, how he views his relationship with Superman. He loves their friendship, but is bothered by how others look at him solely for knowing Superman rather than judging him on his own merits.
- Bromance: He and Clark are really close. Lucy even admitted to being jealous over him constantly spending more time with him (or rather, Superman).
- He also develops one with Winn.
- Brought Down to Normal: He loses his superpowers again during the Season 4 finale, dealing a mutual depowerement to Ben Lockwood.
- Camera Fiend: Made his name as a photographer, though now his current position is art director.
- Character Development: Initially seemed only to exist as the handsome hunk for Kara to swoon over, and a constant reminder that Superman is a thing. Come season 2 and his taking over of CatCo in Cat's stead, and taking it to the streets as The Guardian fleshes out his character considerably. Season 3 builds on this with his friendly rivalry with Lena, the new owner of the media conglomerate, and his slight flirting with her at the same time is the far cry from the rather bland photographer we were introduced to in the pilot.
- Composite Character: In the comics, the black headstrong journalist who has a thing with Lucy Lane although her father kinda hates him is Ron Troupe. Though Jimmy did have a crush on Lucy. He's also this universe's version of Guardian.
- The Cowl: Deconstructed in "City of Lost Children", he became The Guardian to protect people and bring them hope like Superman and Supergirl but unlike them to everyone else he's just a scary guy in a mask who runs out and attacks people; he desperately wants to avert this image. He is so distrusted that he ends up revealing himself as Guardian.
- Determinator: The guy will not back down from a fight, even when the odds are against him.
- Dude, Where's My Respect?: In Season 3, once Lena takes direct control of CatCo, and she starts making decisions without his input or consultation which results in friction between the two.
- Easily Forgiven: Once National City learns of Phillip Karnowsky's actions, Guardian is instantly forgiven by the city. It helps that Guardian isn't burdened with Beware the Superman.
- Embarrassing Nickname: He's best known as "Jimmy Olsen," the name he used when he took a Pulitzer-winning photo of Superman, but now insists on being called "James."
- Empowered Badass Normal: Thanks to the Harul-El, he gains Healing Factor, Eye Beams, Super Senses, Super Toughness, Super Strength and Flight.
- Eye Scream: Loses an eye during his fight with Ben Lockwood in the Season 4 finale, later wearing an Eyepatch of Power.
- Flat Character: In season one, before gaining a much more rounded personality outside of his connection with the cousins from Krypton, see Character Development.
- Green-Eyed Epiphany: He quickly grows jealous of how well Barry Allen gets on with Kara. This is what ultimately motivates him to confess his feelings to her.
- Hero with Bad Publicity: Briefly when National City thinks he's responsible for the murders by Phillip Karnowsky. It lasts one episode before he's vindicated.
- Huge Guy, Tiny Girl: Mehcad Brooks is a whole foot taller than Lucy's actor, Jenna Dewan (6'3" vs 5'3")
- Iconic Item: As James, it's the camera his father gave him; he's always on the scene, putting himself in danger to make sure people see the truth. As Guardian, it's his shield; he doesn't carry a weapon, he's just there to defend people.
- In Name Only: He looks and acts nothing like the Jimmy Olsen from the comics. In fact, he is more the exact opposite of the original character, with Winn being a better match for the traditional Jimmy Olsen.
- Insistent Terminology: He now prefers James to Jimmy, his sobriquet at the Daily Planet.
- Kicked Upstairs: He admits that being promoted is boring him because he enjoys working on the field more.
- Luckily, My Shield Will Protect Me: As Guardian, he has a shield.
- Loose Lips: He accidentally slips Clark's Secret Identity to Winn.
- MayDecember Romance: Kara is more or less two decades older than him, but her being stuck in the Phantom Zone stalled her youth.
- Military Brat: His late father was in the Army Reserve.
- Nice Guy: He is always supportive and caring towards everyone.
- Older and Wiser: Jimmy is usually depicted as The Chew Toy and Butt-Monkey of the Daily Planet. If he was in this series, that was in his younger days. James is now portrayed as more confident and poised.
- Only Known By His Nickname: Inverted. He's known by his real name, "James," rather than his more famous nickname, "Jimmy" (by everyone but his mother and "the big guy").
- Out of Focus: With a bigger emphasis on Kara and Winn's work with the DEO and the introduction of Mon-El, James slowly fades out of the spot light, and would've ended in complete obscurity, had it not been for him taking the mantle of "Guardian." Even at that, there have been episodes where James gets into his Guardian suit, throws one punch or receives one, and then is never seen again the rest of the episode.
- Somewhat justified as Mehcad Brooks has informed the writers that if he gets offered the right script, he may end his contract and leave the show.
- Race Lift:
- Practically Everything Lift. James is an older, taller, suave bald black man, whereas Jimmy's traditionally a Younger Than They Look, red-headed, short nerdy white man. Practically the universal reaction to fans to finding out he is Jimmy Olsen is "THAT'S JIMMY?!"
- A two-fer as James takes on the role of Guardian, normally played by white Jim Harper.
- Secret Keeper: Knows both Superman's and Supergirl's secret identities.
- Secret Secret-Keeper: Superman told James about his cousin and requested that he keep an eye on her when he moved to National City. It doesn't take long for him to come out with this to Kara.
- Sensory Overload: Suffers from this after getting powers.
- Shout-Out: Guardian shares a lot in common with Steel.
- Sidekick: Deconstructed in "Crossfire", when he moans that he's always been The Cape's sidekick, and he wants to be the hero now. He becomes one the very next episode.
- Thou Shalt Not Kill: Guardian refuses to kill, which is strongly hinted as the main reason the National City populace tolerates him.
- Took a Level in Badass:
- Technically Jimmy's always been a badass (it falters at times Depending on the Writer), but due to the fact that both he and Superman have had a decade of experience, James is a much more seasoned pro in conflict. In "Crossfire", he shows off some impressive Good Old Fisticuffs, while the next episode sees him become a vigilante.
- After getting shot by Eve, he gets healed by the Harun-El and gains powers as a result, before losing them again in the Season 4 finale.
- The Unmasking: He reveals his identity to the public in the Season 3 finale.
- Vigilante Man: As the Guardian, he takes care of problems that Kara and the DEO may not have the time for.
- Voice with an Internet Connection: Works as this alongside Winslow when Supergirl is doing more public non-DEO acts of heroism.
- You Are in Command Now:
- Cat appoints him as the new head of CatCo in her sabbatical.
- Lena also allows him to oversee the running of CatCo while she takes a hands on approach in the bullpen.
Portrayed By: Ian Gomez
Voiced By: Dafnis Fernández (Latin-American Spanish dub)
A veteran newsman hired by Cat Grant to be the editor-in-chief of CatCo magazine.
- Adaptation Deviation: Snapper Carr was a non-powered member of the Justice League of America, and generally the mascot of the group. He's in a position of authority in this show.
- Adaptational Ugliness: While cute and young in the comics, is a balding middle aged man here.
- Age Lift: Like Cat, a good twenty years older than his original comic incarnation.
- Ambiguously Jewish: Snapper quotes a Yiddish phrase told to him by his grandmother.
- And Starring: Gets this citation in the guest stars lineup.
- Berserk Button: In "Exodus", you finally get to see what Snapper looks like when angry after Kara publishes a story independently. He drops the Deadpan Snarker facade and shows his real emotions, and you finally see the real Snapper.
- Brutal Honesty: He may not care if you enjoy hearing it, but he'll give it straight - at least when it comes to his profession.
- Composite Character: Snapper's personality is more akin to Perry White's.
- Da Editor: He is Kara's superior, though technically, James still possess the highest authority due to being Cat Grant's proxy CEO. However, after putting his foot down, it seems James defers to Snapper's judgment. Overall, it's mostly a case of, as James puts it, "you stay in your lane and I'll stay in mine."
- Expy: Snapper's appearance and personality are highly similar the character of Mr. Grant from the Mary Tyler Moore Show
- Guttural Growler: Speaks with a very rough, deep voice, compared to his actor's much normal voice.
- Intrepid Reporter: Despite being a busy, out of shape and middle-aged magazine editor with no superpowers, still manages to find incredibly difficult leads, even dealing with life-threatening situations.
- Jerkass Has a Point:
- He's not nice about it, but he's also not wrong when he says you don't get to say you're a reporter because you "chose" the job. You have to earn it.
- In his second episode, he's right that you can't let your personal biases get in the way of reporting honestly. His reporter instincts are also dead-on.
- In "Survivors", when Kara comes up with a legitimately important story, he shows interest, but runs down the list of things she needs before he'll consider it: sources, leads, and so on before he'll even take it. He dismisses anything less than a solid foundation, saying CatCo isn't Reddit. When she does get first hand evidence (police reports, forensics, an official source in the name of Supergirl), he criticizes that she still needs to work on her writing (run-on sentences, needs to follow AP style), but he does compliment the fact that she's developing sources and marks it as an official story she's working on.
- In "Exodus," he fires Kara for publishing a story independently. He'd held her back from publishing because she lacked attributed and independent sources, and even says that while she was right this time, she "got lucky." It's clear he doesn't want to fire her, but feels he has to because it's such a clear breach of rules.
- Most antagonistic journalists in a superhero series would be either trying to reveal the superhero's secret identity or making their lives harder through, at best, creative journalism and at worst outright libel. Snapper Carr, on the other hand, is an antagonist because he's too moral, with his strict By The Book attitude regarding the rules of journalism preventing Kara from exploiting her secret identity to aid her own status as a reporter, ala Peter Parker or classic depictions of her cousin Clark Kent. This is taken to its ultimate conclusion in "Exodus" where, because Kara can't provide attributed & independent sources, since she knows the story by A: being Supergirl, and B: working with the strictly-off-the-books DEO, he won't publish her story. When she goes behind his back and publishes it independently, he fires her, citing that just because she "got lucky" this time doesn't mean she couldn't have been wrong and so caused a panic.
- Jerk with a Heart of Gold: Hostile towards Kara, though for admittedly good reasons. She's a rookie reporter and his criticism challenges her to improve rather than automatically assume that she's going to be amazing at it. Despite his hostility, he cares about doing his job in as honest a manner as possible. Conversely, he may think Kara will be an amazing reporter, which would make him more eager to drive home his instruction.
- Mean Boss: He's not an easy man to work for — and lord help you if done something that warrants you be dismissed; he'll pack up your belongings in a box on your desk, waiting to be found by the unsuspecting employee.
- Meaningful Name: The comic book Snapper Carr got his name from having the tic of snapping his fingers. This Snapper Carr just, well, snaps at you verbally.
- Must Have Caffeine: Snapper's definitely not a morning person: priorities are coffee and danish first thing, that's it.
- Put on a Bus: It's mentioned that he has gone on sabbatical from CatCo in "Girl of Steel".
- Reasonable Authority Figure: In "Supergirl Lives", Snapper (rightfully) is aghast Kara would promise a mother she would return her child, which is perfectly reasonable since he has no idea Kara is Supergirl. He's not impressed when Kara succeeds, because it's putting too much on her plate as a reporter (again, not knowing what her other identity is.) However, he does not tell her to stop as her boss. Instead, he just shrugs and warns her she may burn out and it'll cost her a fortune in psychiatry bills. As he notes as soon as she leaves with his "That-a girl, Danvers," he's trying to get her to follow her intuition to be the best reporter she can be, and he actually is proud of her work. He just knows better than to show it.
- So Proud of You:
- In "Supergirl Lives", he says "That-a girl, Danvers" after Kara stands up for herself and has left, after saying she'll always choose the stories she's passionate about. Subverted sadly in "Exodus" when he tells her to her face that he'd always been rooting for her — as he's firing her.
- In "Ace Reporter", he heaps on praise for her being The Determinator in the face of danger, and because of her dedication to the truth over any personal issues with him. It ends with him re-hiring her.
- What Happened to the Mouse?: Disappeared after Season 2.
Nia Nal / Dreamer
Species: Human-Naltorian Hybrid
Portrayed By: Nicole Maines
A fresh reporter for CatCo who is a member of a species that specializes in prophetic dreams. When she becomes aware of these abilities, she decides to assist Supergirl, using the name "Dreamer".
- Adorkable: Her first scene quickly establishes her as fascinated in her speech, in a way similar to Season 1 Kara. This is even more obvious when she starts superheroing, as she is incredibly enthusiastic about being a hero, to the point that she sleeps in her superhero costume and constant cracks dream-related pun-filled one-liners.
- Alliterative Name: Nia Nal.
- All-Loving Hero: She is accepting of aliens. Clearly demonstrated when she defends Brainiac 5 from anti-alien pizza deliverers. Perhaps because she is half-Naltorian and thus half-alien herself.
- Dreaming of Things to Come: Primarily, she has prophetic dreams. Brainy is training her to use it as a form of Combat Clairvoyance and expelling raw "dream energy" as means to be on the offensive.
- Famous Ancestor: Nia is the ancestor of Brainy's Legion teammate Nura Nal, who is also/will be Nia's successor as Dreamer.
- Future Badass: From Brainy's point of view.
- Half-Human Hybrid: She and her sister Maeve are the offspring of a human father and a Naltorian mother, as shown in "Blood Memory".
- Refusal of the Call: Tries this for a number of episodes until she gives in to the Call and becomes Dreamer.
- Relationship Upgrade: She and Brainy become a couple during the Season 4 finale.
- Sleepyhead: Has a habit of falling asleep at her desk. She claims it's due to suffering from narcolepsy, but it turns out that it's because she has been avoiding sleeping due to her Dreaming of Things to Come powers making her dreams terrifying and hard to understand. Kara and Brainy help her with these powers and eventually, she is able to deal with these dreams and have restful sleep again.
- Supernaturally Validated Trans Person: Her oneiromantic powers are a Gender-Restricted Ability that is inherited by one woman every generation in Naltorian families. Nia being the one to inherit this ability reaffirms her identity as a woman, to the surprise of her family, who, even though they were fairly accepting of her transition, fully expected her sister Maeve to get the abilities and never even considered that Nia might have inherited them instead.
- Transgender: She is a trans woman, just like her actress.
Portrayed By: Jaymee Mak
A new CatCo reporter as of Season 4.
- Broken Pedestal: As of "Crime and Punishment", any faith and respect she had for Supergirl fades when she becomes a public enemy for attacking the White House when it's actually the Red Daughter who pulled the attack.
- The Gadfly: She pulled a prank on her alien coworker Franklin, putting strips of wood in his coffee, since that was his natural diet. James was not amused, especially because of the rising hatred against aliens. She later apologizes.
- Intrepid Reporter: She starts investigating LCorp, after getting a lead on their illegal genetic experimentation. Unfortunately, James puts a stop to this due to his personal connection with Lena.
Portrayed By: Sean Hewlett
A new CatCo reporter as of Season 4, a Dryad.
Catherine "Cat" Grant
Portrayed By: Calista Flockhart
Voiced By: Liliana Barba (Latin-American Spanish dub), Eri Miyajima (Japanese dub)
The founder of CatCo, a powerful media conglomerate, and Kara's former boss. In Season 2, she decides to go on a long sabbatical and leave James in charge.
- Adaptation Relationship Overhaul: Cat goes from antagonistic to Kara to a maternal mentor and steadfast ally of her.
- Adaptational Heroism: She was an incredibly unapologetic Alpha Bitch in the comic books (pre-Flashpoint), and her only interaction with that version of Supergirl was a mud-slinging campaign (brought upon because of Kara accidentally breaking her arm when saving her life) so brutal that Kara swore to never save her life again. This version is a Jerk with a Heart of Gold that has no problem giving Kara a necessary pep-talk... and then order her to go get her a latte... or try to draw a super villain away from her employees.
- Adaptational Modesty: Cat Grant in the comics showed off her boobs, while Cat Grant in this series fully covers her torso and is never sexualized.
- Age Lift: In the comics, Cat Grant is usually within the same age range as Clark Kent/Superman, even being a potential romantic partner for him prior to Lois Lane. In this series, Superman is at least 36 years old, whereas Cat is portrayed by Calista Flockhart, who is 50. Admittedly, though, Calista doesn't look fifty. Considering she was revealed to have a son in his mid-twenties, she can't be that much younger.
- And Starring: Credited this way in the series OBB, along with David Harewood. After being demoted to recurring role starting Season 2, she falls into "Special Guest Star" but still with the "And" citation.
- Animal Motif: She has been compared, obviously, to cats.
- Big Bra to Fill: Played With. Cat is portrayed by the modestly endowed Calista Flockhart, but her comic counterpart has breast implants which she regularly flaunts.
- Broken Ace: Her competitive, "always go for the win" attitude is revealed to have been partially fueled by her mommy issues.
- Cat Smile: Appropriately enough. Her actress is known for having this trait, which she does even in this show (see her page image).
- Celebrity Paradox: Star Wars is acknowledged to exist in this universe despite the fact that her actress is married to one of the lead actors of the franchise in Real Life. In "Myriad", there's a reference to the wife of the aforementioned actor, meaning it's possible that Cat and Calista Flockhart exist in the same universe.
- Character Development: With Flockhart unable to continue the show, this had the effect of having Season 1 be a subplot of Cat Grant sliding from cynicism to idealism to the point at where she had the courage to completely re-prioritize and choose family over work.
- Cold Ham: She loves delivering her lines in a "theatrically subdued" manner. Unless she's calling someone, that is.
- Deadpan Snarker: When commenting on Kara's rough start as a hero, she says "Oh, what is the opposite of super? #Terriblegirl?"
- Decomposite Character: The one to mock Supergirl is Leslie, not Cat.
- Defrosting Ice Queen: To both Kara and Supergirl. How much of that is due to them living up to her Tough Love standards and how much is due to her son, Carter (who opens up after Kara watches him for an evening and has a massive crush on Supergirl), remains to be seen.
- Demoted to Extra: She was downgraded to a recurring role in Season 2, in a case of Real Life Writes the Plot after the show's production moved to Vancouver, as Calista Flockhart is famously uncomfortable working outside Los Angeles. Makes a cameo in the Season 3 premiere, where she is now the Press Secretary to President Marsden.
- Dramatic Irony: Cat initially doesn't want to hire Kara because she doesn't like Millennials, not knowing that Kara is chronologically born in 1966, making her a member of Generation-X like Cat herselfnote .
- Easily Forgiven: A Red Kryptonite-influenced Kara nearly kills her in "Manhunter", forcing Cat to publicly denounce Supergirl as a threat. Still, rather than turning completely on her, Cat encourages Kara to regain the public's trust/faith in her.
- Eating the Eye Candy: Goes wide-eyed and flirtatious whenever Clark is around, and blatantly admires his backside at one point.
- Everyone Has Standards: She's unashamedly a cold and calculating media mogul, but she's genuinely impressed by Supergirl's status as a Hope Bringer and makes an effort to pander to the city's new-found optimism by punishing Leslie Willis for ragging on her.
- Expy: If you think Cat seems a lot like Miranda Priestly, it's not an accident. The character description when the role was being cast was specific in that the character was Miranda with the Serial Numbers Filed Off.
- Friendly Rivalry:
- With Perry of the Daily Planet, the two compete with one another, but they still respect each other as colleagues.
- Likewise with Lois Lane, the two make snappy remarks at one another but ultimately see each other as close friends.
- Good Is Not Nice: Ultimately, Cat is not a bad person in any real way. She's casually rude and kind of selfish, but she cares about people and is honest to a fault. She points out that what happened to Leslie wasn't Supergirl's fault and that if anyone should feel guilty, it's Cat (though she claims she doesn't).
- Good Parents: While Cat's demanding career keeps her from being the most attentive parent, she is still caring and supportive of her son Carter. She even recognizes that he is a "special" child with specific needs. And she would even give up her career rather than let her oldest son, Adam, get caught in a media scandal.
- Hopeless Suitor: She has a thing for Clark Kent and asks if her prediction that he and Lois break up came true.
- Horrible Judge of Character: Played with. Cat has an excellent eye for talent; she even pegged Kara as a future reporter the second she met her. However, she also hired Leslie Willis and Siobhan Smythe, who turned out to be talented but also nasty pieces of work.
- Hypocritical Heartwarming: Only she is allowed to be rude to her employees, thank you very much. Her mother runs afoul of this in "Red Faced" and gets a tongue-lashing for it.
- Incoming Ham: You know she's about to enter the scene when she's calling for Kara from afar.KYRA!
- It's All About Me: When Kara comes in to complain about naming her "Supergirl" instead of "Superwoman," Cat immediately shuts her down with a faux-feminist speech about how "it's good to be a girl" (ignoring what Kara was actually saying), then talking about what Supergirl is doing only in terms of herself and her media empire.
- Jerkass Has a Point:
- Though couched in an It's All About Me attitude, her reasoning for using the name "Supergirl" isn't exactly wrong. If critics perceive a "Supergirl" to be somehow less than a "Superwoman," then the real problem is how they choose to interpret the words, not the words themselves.
- In "Stronger Together", she similarly points out in her own idiosyncratic way that Supergirl should not be tackling jobs such as catching planes falling from the sky while she's so inexperienced because she causes more harm than good. Instead, she should be more like Kara and work her way from the bottom up. Supergirl takes this to heart.
- While she's dismissive and tells Kara she's useless in "Livewire", she does so because Kara (who she thinks is an ordinary person) can't possibly do anything against Livewire and she probably has friends and family to see on Thanksgiving.
- In her typical good but not nice way, she points out that asking "how do you do it?" to a mother and career woman is annoying because of the implicit "you shouldn't be ABLE to do it all" that it carries and gives practical advice— start slow, and take things one at a time.
- She refuses to help Kara with Snapper even though as CEO, she could tell Snapper to take her. However, she knows that 1) Snapper is the sort who would just leave CatCo and find good work elsewhere, and 2) even if Snapper didn't leave, he'd be resentful towards Kara and not give her a chance to do good work, and 3) even if Cat weren't leaving, Kara was getting too dependent on her and it was time to Shoo the Dog.
- Jerkass Ball: She becomes a bigger jerkass towards Kara after Kara breaks up with her son. Resulting in hiring a new assistant she designates as number one. It doesn't last though.
- Jerk with a Heart of Gold: "Livewire" reveals that she's terrible with people, but she does care. As soon as she hears Kara has a foster mother, she's intrigued, and when she learns her parents died when she was a teen, she's sympathetic. Also when the titular Villain of the Week attacks, she doesn't leave Kara behind when attempting to escape and willingly risks herself to the villain in order to buy Kara more time to run away and call for help.
- Another good example is when Supergirl/Kara is under the influence of red kryptonite and decides to see if "Cats" really do land on their feet. Supergirl saves Cat at the last moment but Cat is forced to issue a public announcement warning that Supergirl has become a danger to humanity and is extremely broken up over this. When a cured Supergirl returns to apologize, Cat accepts it and encourages Supergirl to win back the public's faith in her.
- Knight In Sour Armor: She's extremely cynical, but as the series goes in, it's obvious that she is actually idealistic but believes that's unavailable to her because it's a Crapsack World.note
- Malaproper: Consistently gets people's names wrong (when she even recognizes them). Kara is Kyra, Winn becomes Wit... In the final episode of the first season, it's strongly implied she deliberately mispronounces their names as a power move.
- Mean Boss: TV Guide has described her as "A Devil Wears Prada-type boss." Almost fires Kara for suggesting "Superwoman" instead of "Supergirl," which she coined. Also, she consistently mispronounces Kara's name.
- My Greatest Failure: She once had firsthand knowledge that a well-liked actor was abusive towards his wife. She was pressured into making her story about him a fluff piece instead of a truthful one, and he killed his wife a few weeks later. She tells this story to Jimmy in an effort to show him the importance of doing the right thing.
- No Celebrities Were Harmed: Described as "J. Lo by way of Anna Wintour" in casting calls.
- Older Than They Look: A more mundane example. In "Hostile Takeover" it's suggested that she's older than she appears and that she's been lying about her age, as she was hacked and one of the things the hacker published was her true age. Her actress, Calista Flockhart is 51, but certainly doesn't look it.
- One Steve Limit: She and her mother share the same name aside from a different letter at the very beginning.
- Parental Substitute: To Kara, of the Tough Love variety now and then, but it becomes more and more obvious as the show goes on. She doesn't outright say it, but by season 2 she talks to Kara like she's the daughter she never had.
- Put on a Bus: Decides to leave CatCo in the second episode of Season 2, due to Calista Flockhart's established refusal to work outside of Los Angeles.
- Red Baron: She's known as "The Queen of all Media". Doubles as her Badass Boast.
- Secret Keeper:
- She's the first person to deduce that Kara is Supergirl on her own, without somebody who already knew telling her. In the next episode, however, Supergirl had help from Martian Manhunter to convince Cat she's wrong, though it's implied she wasn't actually fooled by the deception. The Season 2 finale confirms that she knows, making her a Secret Secret-Keeper.
- She easily figures out that Barry Allen is The Flash, since he appeared when The Flash appeared, he was adamant that he should be called The Flash and he was a Nice Guy.
- Averted with James as Guardian, as she immediately tells Clark about this.
- Self-Made Woman: She went from being the girl who brought Perry White's coffee to being the owner of a huge media conglomerate through hard work and dedication.
- Serial Spouse: Tells Kara in the Season 2 finale that she was married four times. It's not stated which of them are Adam and Carter's respective fathers.
- Silk Hiding Steel: At first glance you'd think she's a comical Dirty Coward, but she's actually pretty brave as she doesn't hesitate snarking at her now superpowered ex-protegee more than once.
- Single Woman Seeks Good Man: As with the comics, Cat carries a torch for Clark, partly due to his Midwestern looks and values.
- Sitcom Arch-Nemesis: Her relationship with Lois Lane in a nutshell, since Cat rarely goes for a whole episode without saying something nasty or competitive about Lois.
- So Proud of You: While she never would admit it to her face, she does express a sense of pride in Kara.Cat: (quietly to herself after watching Kara go to save the day) Go get 'em, Supergirl!
- Spotting the Thread: Cat is very observant, spotting even the smallest details about something or someone. She even easily figures out that Kara's, James's, and Barry's alter egos.
- Start My Own: She apparently got fed up with being a worker at the Daily Planet, so she started her own company.
- Stealth Mentor: Her scoldings and lectures (see Jerkass Has a Point) actually contribute to Kara's Character Development, regardless if she intends it or not.
- In an unusual play on the Stealth Mentor trope, Kara already seems to see her as that, almost to the point of being a Stealth Student. Even though she legitimately dislikes the rude and dismissive way Cat treats her most of the time, Kara still looks up to her, cares about her and values her advice regarding whatever situation she's dealing with (whether or not Cat realises she's advising her and what she should do as Supergirl). This is likely why Kara genuinely wants to keep working for her.
- Tsundere: She is often harsh to her employees, including Kara, but she does care about Kara a lot, as well as Ashley, despite what she says about not feeling guilty about what happened to her. She is also quite sweet to her son Carter.
- Tranquil Fury: She never raises her voice in anger, but when she gets mad, there's no mistaking it. She teaches Kara this skill, telling her that she needs to channel and control her fury, not just let it burst out.
- Two First Names: Per the DC Comics norm.
- Vitriolic Best Friends: The reasoning that Cat can say such horrible things about Lois, is honesty not malice, and she openly admits the two are very close friends despite the rivalry.
- Weirdness Magnet: Granted, she's the publisher of a major media company, but she's now had two supervillains in her employ (granted they didn't become supervillains until after they stopped working for her but still) a superhero as another, not to mention a crush on yet another. Despite this, she tells Kara that "she can spot the extraordinary pretending to be ordinary" in a moment.
- "Well Done, Daughter!" Gal: In a conversation with Kara, she reveals that she always tries her best to be the best and usually succeeds, but her accomplishments are never enough for her mother to appreciate.
- Where Da White Women At?: In "Hostile Takeover" it's revealed that she asked out Idris Elba. It's one of several "scandalous" things that were revealed about her after she got hacked. He turned her down, which she considers his loss.
- You Called Me "X"; It Must Be Serious: Cat pronounces Kara's name correctly in the final episode of Season 1, indicating she was no longer her subordinate.
Portrayed By: Peter Facinelli
Voiced By: Emmanuel Bernal (Latin-American Spanish dub), Takashi Kondo (Japanese dub)
A multimillionaire tech genius out to discover Supergirl's true identity.
- Ambiguous Situation: He is no longer enemies of Kara or the D.E.O.. Did he become good or is he a Villain of Another Story? The two references he has had indicate he is alive, but his current moral status is unknown.
- And Starring: Is credited with "Special Guest Star" citation.
- Anti-Villain: He is kind of extreme, but he wants to make the world a better place.
- Bad Boss: Played with. First, he fires the lead engineer on the maglev train project for not coming up with a way to increase the trains speed, instead of just telling him the method Lord himself came up with. Then, when Reactron tries to capture one of his scientists, he offers himself instead, putting him at risk. But the reason he states for this is because he is so much better than the other guy, making the whole thing possibly just an egotistic act to get himself into the spotlight. Cemented when his ex-employee Knox reveals Lord blackmailed him into planting bombs to test Supergirl in exchange for a too expensive medical treatment for his daughter, which leads to Knox's suicide.
- Big-Bad Ensemble: Seemed to have become this alongside Astra's forces in "Blood Bonds". Seemed to have performed a HeelFace Turn, though later actions subverted that.
- Captain Ersatz: Of Lex Luthor. In addition to being an Insufferable Genius and billionaire industrialist, he dedicates his spare time to smearing the superhero of the city, and crafting nefarious plots. There's a scene where Supergirl confronts him in a very similar way to how Lex was confronted by Superman in previous series. Also like Luthor he creates an Evil Knockoff of the Kryptonian. Doubles as a Mythology Gag to the comics, where for the first few arcs of Justice League International Lord was the rich and powerful human agent for a rogue A.I. before switching sides. What did Lord use to create his Evil Knockoff here? DNA residue from part of a rogue A.I.
- Chuck Cunningham Syndrome: He disappears from the series without any explanation after Season 1. Made even more obvious with the arrival of Lena Luthor who takes on the same role Maxwell did in Season 1 (ultra-rich business tycoon-turned-inventor-turned-philanthropist whose positioning in the Right vs Wrong scale is initially unclear and who engages in a romance with one of the lead characters).
- Composite Character: Both of Lex Luthor and himself in and out of story, naturally. His distrusting of superpowers (Supergirl in general) coupling in his Crooked Contractor motif are dead give away's.
- Deadpan Snarker: He has a crass remark ready for every situation.
- Freudian Excuse: He hates the government for the death of his parents who worked as government scientists, which they covered up. As a result, he doesn't trust anybody but himself. This is a big part of the reason he doesn't like Supergirl: he says that superheroes make people complacent, and that ordinary people should rely on themselves.
- Hollywood Atheist: "If there was a God, She never would have put us in this mess."
- Hot Scientist: Max Lord is a brilliant physicist and is very handsome. Cat calls him sexy despite not being fond of him.
- Iconic Outfit: While Lord wears a variety of clothes, they tend to be typical formal men's wear, but with one notable, Rule of Symbolism exception-he never wears a necktie as a sort of way of keeping him more youthful and progressive seeming.
- Insufferable Genius: The man is a technological genius and he will not let you forget it. Alex derogatorily referred to him as nothing more than "A reformed nerd with a God Complex."
- Jerkass: Lord is a dick on general principle, but seems to dislike Supergirl in particular, even calling her a "pet alien" to her sister.
- Jerkass Has a Point: When he was apprehended by Alex and her agents from the DEO and locked away in an cell for what would be for years, he was valid when he mentioned they didn't have enough evidence or lawful clearance to arrest him let alone lock him away with no due process or trial.
- Jerk with a Heart of Gold: Dick though he may be to the point Kara refers to him as a monster, Lord does seem to genuinely want to make the world a better place.
- Lonely at the Top: Due to his distrust in people.
- Meaningful Name: He wishes to lord over humanity and he definitely has a God complex.
- Not Me This Time: Played straight with the Black Mercy. Zig-zagged with the Red Kryptonite, as he admitted to creating it, but intended it to affect Non rather than Supergirl, and definitely did not intend it to turn Kryptonians into uninhibited jerkasses, just to act like regular green kryptonite.
- Perma-Stubble: He has a short beard. J'onn mocks it once while impersonating him.
- Second Episode Introduction: Introduced in the second episode of the entire series.
- Secret Keeper: She has not outed Kara as Supergirl after discovering her identity.
- Sharp-Dressed Man: He's not seen without a suit.
- Ship Tease: He showed an interest in Alex which eventually lead to a date, but his antagonism towards Kara made their relationship mostly one-sided and she only went on a date with him and faked interest in him to get information. Though she was shown to care about him somewhat when she tried to encourage his good side and even held his hand when it seemed like the world was about to end.
- With Cat as they had a past relationship and later he goes out of his way to send her jewelry made out of a material that made her immune to the Kryptonian mind control device.
- Took a Level in Jerkass: While he was a jerkass from the very beginning, he still possessed quite a few positive qualities. These are less and less on display as Season One goes on, and by "Bizarro" he's graduated into a true supervillain willing to target Supergirl in her civilian identity.
- Subverted, as he then begins to gain back his positive qualities, or at least stops being as direct of a supervillain. Probably by recognizing, well... he doesn't want to pass Kara's Godzilla Threshold. He also helps out against Non and company as things get hot.
- Ungrateful Bastard: Kara rescues him from Reactron, but he intentionally robs her of the credit.
- Villainous Crush: Towards Alex Danvers. But following the Kryptonian attack at his company, he tells Alex their partnership is over. He still has dinner with her at one point, though both are trying to get information out of the other.
- Villain with Good Publicity:
- He orchestrated the bombing campaign against his own company in "How Does She Do It?" and blackmailed his patsy with a life saving surgery for the man's daughter, all to analyze Supergirl's powers.
- In "Human for a Day", he is quick to take advantage of the earthquake to boost his own PR and take shots at Supergirl, while also doing genuinely good deeds.
- What Happened to the Mouse?: Disappears without explanations and has had only two mentions, despite being set-up as a major player during the Season 1 finale. Lena Luthor has been inserted in his place as a sort of distaff Suspiciously Similar Substitute.
Portrayed By: Tristin Mays
Maxwell Lord's personal assistant.
- Alliterative Name: Paulina Parker.
- Girl Friday: Fills this role for Maxwell Lord.
- Punch-Clock Villain: It's clear she's not a bad person, she's just doing her job.
- Satellite Character: All that's really known about her is that she's Maxwell's secretary.
- Token Good Teammate: Played with. While she's not evil, she doesn't really question the moral implications of what Lord does.
Species: Enhanced human
Portrayed By: Rahul Kohli
Lena Luthor's ex-boyfriend and the billionaire CEO of Spheerical Industries.
- Adaptational Heroism: In his only comics appearance, Jack Spheer was a Corrupt Corporate Executive who who used the mind-control powers he'd gained from the Biomax formula to get revenge on The Power Company's Joshua Powers. Here, he's the one '''being''' mind-controlled.
- Brainwashed and Crazy: He has been programmed to kill by Beth after his Biomax "bees" downplay his will.
- Celebrity Paradox: iZombie was mentioned on The Flash (2014) Season 2, even though his actor is one of the main characters there. And unlike other examples, the paradox couldn't be subverted since Barry himself traveled to this universe (twice).
- Decomposite Character: His villainous role was given to his secretary.
- Hot Scientist: He is good-looking and the owner of a research laboratory.
- Rogues-Gallery Transplant: Jack Spheer was a Green Arrow villain originally, not a Superman or Supergirl one. Apparently there is no hero with the "Green Arrow" mantle in Earth-38.
- Tall, Dark, and Handsome: He is taller than Lena, dark-haired and handsome.
Portrayed By: Adrian Pasdar
A rich businessman with a personal disdain for Lena Luthor, who doesn't shy extreme measures to damage her reputation.
- Arch-Enemy: For Lena, ever since she bought CatCo before him. He will do anything to ruin her reputation.
- Big-Bad Ensemble: With Reign in Season 3.
- Big Bad Wannabe: Isn't half as powerful or threatening as he thinks he is....at least in his first appearance. After that, he shows Lena and Kara that he is not playing around.
- Corrupt Corporate Executive: Plans to take over CatCo to build up a Propaganda Machine against Lena and has no problems with hiring terrorists.
- Didn't Think This Through: His plan to hire a terrorist to attack the bay; he immediately drew attention to himself because he was quite vocal about his desire to redevelop it and therefore was the most obvious suspect. Also he didn't really take into account how somebody like Lillian Luthor would react to his constant attempts to kill her daughter ...
- Evil Is Petty: He's very petty towards Lena, as well as James, for making their distaste for him and his ideas for National City known. He tries to buy CatCo out from under James in retaliation, and threatens to make trouble for Lena when she beats him to the punch. He makes good on that by trying to interfere with her business in "The Faithful", filing an anti-trust lawsuit that gets instantly slapped down, apparently for no other reason than to be obnoxious.
- That's nothing compared to when when he poisons a public pool with a chemical that produces lead poisoning symptoms all so he can blame it on Lena's bomb to get rid of the Daxamites and destroy her reputation.
- Faux Affably Evil: Is able to put up an act of friendliness whenever he needs to, especially in front of cameras.
- Hate Sink: Each episode he's in makes it abundantly what a spiteful, nasty, piece of work he is. He will kill dozens or poison hundreds of children just to get petty revenge on a business rival.
- Hypocrite: Attacks Lena and James for everything he does.
- Foil: To Maxwell Lord. Lord, honestly wants to make the world a better place, despite his Bad Boss tendencies. Edge is motivated only by his greed and pettiness.
- Jerkass: When he isn't putting up an act, he quite easily qualifies as the most unpleasant human in the series period.
- Karma Houdini Warranty: His luck finally runs out in "For Good" where Lena manages to get a confession of his crimes out of him.
- No Celebrities Were Harmed: This version of Edge is a very clear reference to Donald Trump, being a wealthy real estate mogul with a dim view of the news media. (Which is funny, considering the comic book version of Edge was a media mogul).
- Not Me This Time: Lena immediately suspects him to be behind the Kryptonian graffiti, but he isn't. He does send an assassin after her, however.
- Politically Incorrect Villain: Makes some pretty sexist remarks towards Lena.
- Strawman Political: "For Good" firmly establishes him as also hating Lena and James for being the "liberal media."
- Suspiciously Similar Substitute: For Lex Luthor (who's currently in jail) and Maxwell Lord who hasn't been seen since Season One — a businessman who's a thorn in the hero's side because he's always able to get away with his crimes; rather than being a media mogul like in the comics, he's a businessman with a variety of interests like Lex. However, he turns out to be quite different from Lord. Lord did a lot of dark stuff because he really, truly believed it necessary to protect the world, and always stopped short of truly becoming the new Lex, and in the end helped the heroes, putting him in Anti-Villain territory. Edge is played enough like Lord that you'll think they're the same for about one episode... then you find out how capital-E Evil this guy is.
- Smug Snake: Which makes him being left on a container ship at least a few miles away from National City by Supergirl all the more satisfying.
- The Unfettered: He is fine with hiring a terrorist and endangering hundreds if not thousands of innocents lives to reach his goals.... and poison children to destroy one woman's life.
- Villain Has a Point:
- He is not entirely wrong about the fact that a lot of the good Lena is at least partially motivated by her guilt for the actions of her brother, mother, and even her own actions for helping bring on the Daxamite invasion.
- He also not wrong about CatCo becoming increasingly more biased since James took over, as it has been shown that he doesn't want articles saying bad things about superheroes or aliens. Then again, he plans to turn it into his personal propaganda machine.
- Villain with Good Publicity: Acts like a philanthropist towards the public. Might finally be at an end after Lena gets him to confess his crimes.
- Would Harm A Child: He poisoned a public pool with a chemical that produces lead poisoning symptoms, that made dozens of children seriously ill all to destroy Lena's repuation.
Residents of National City
Detective Margarita "Maggie" Sawyer
Portrayed By: Floriana Lima
Voiced By: Jahel Morga (Latin-American Spanish dub)
A detective for the National City Police Department who takes a special interest in the cases involving aliens.
- Action Girl: Moreso than the comic Maggie.
- Adaptation Dye-Job: Blond in the comics. Here, she's played by a brunet actress.
- Advertised Extra: Her actress' name is included in the OBB, but she's mainly a Satellite Love Interest to Alex.
- Aloof Dark-Haired Girl: When on the job, she's stoically commited to the shield. After hours however she can be playful, flirtatious and fun, but even still keeps somewhat an emotional distance from most. Until Alex came along, that is.
- Amazon Chaser: Just look at her reaction to Alex punching Richard Malverne, the man who kidnapped and threatened her life in "Alex".
- Ambiguously Brown: Invoked by Maggie, who only refers to herself as "non-white".note
- Badass Lesbian: Maggie's a very tough cop who can hold her own in a fight against aliens, and she's a lesbian. She also helped Alex realize that Alex was as well.
- Battle Couple: With Alex. Even before they started dating, they fought together, with Maggie even remarking that they make a good team. After they get together, they don't get to show this off until "Exodus", when they first fight CADMUS agents in the alien bar together and then, when Alex goes rogue after being suspended from the DEO, fight CADMUS agents and rescue deported aliens together.
- Biker Babe: She mentions that she owns a motorcycle, plus her wardrobe of leather jackets is reminiscent of this archetype.
- Birds of a Feather: With Alex. Both are tough, intelligent women who even have the same interests in music (e.g., Barenaked Ladies).
- Child Hater: Downplayed, she doesn't hate children by a long shot, but she just doesn't see herself as a mom, unknowingly putting her at odds with Alex who wants to be.
- Closet Key: For Alex. After Maggie's girlfriend breaks up with her, Alex is persistent in wanting to spend time with her which makes Maggie wonder if Alex herself is gay. This question makes Alex strongly consider the possibility that she is. Other than that it is clearly shown that Alex may be developing feelings for her through the fact that they have common interests and personalities.
- Composite Character: Maggie's namesake counterpart in the Superman mythos is a no-nonsense short-haired blonde woman, while this version (long-haired sarcastic Latina with a willingness to bend the rules) has more in common with Renee Montoya from the Batman comics.
- Cowboy Cop: Unlike comic "by the book cop" Maggie, this Maggie Sawyer works outside the law to aid her in her cases, and her way of dealing with tense situations are straight out of an action movie. She also enjoys engaging in Casual Danger Dialogue.
- Dark and Troubled Past: Maggie reveals in "Mr. and Mrs. Mxyzptlk" that she lied about her parents being okay with her homosexuality. They kicked her out of the house when she was 14, and she was forced to live at her aunt's for three years.
- Drink Order: She loves Scotch.
- Fair Cop: Maggie is a very attractive police officer and gets her fair share of attention from females of many species, Alex included.
- First Love: She is this to Alex as she is the first person that Alex has had strong feelings for, as it was noted that her past relationships never got very far due to her lack of attraction to men.
- Forced Out of the Closet: She was outed as a lesbian when she was 14, to which his parents disowned her.
- Freudian Excuse: She was outed at 14 by a girl she liked on Valentine's Day. Her parents then kicked her out and she moved in with her aunt. This is the reason behind extreme dislike of the holiday.
- Friend on the Force: She is a police aid for Kara and the D.E.O.
- Hell-Bent for Leather: She wears leather jackets.
- Interspecies Romance: Sawyer admits to having dated her share of aliens.
- I Want My Beloved to Be Happy: Realizing that Alex's dreams are too important for her to sacrifice, she gracefully bows out of their engagement, assuring Alex she's going to be an amazing mother someday.
- Lesbian Cop: She is an open lesbian cop who grew up in Nebraska.
- Manic Pixie Dream Girl: To Alex. Her presence is one of the few things that can get the guarded and emotionally closed-off Alex to lighten up, not to mention Maggie helped Alex realize she was a lesbian.
- Nephewism: She mentions that she came to live with her aunt after her parents kicked her out when they outed her.
- Put on a Bus: Departs the series in Season 3, leading to an amicable breakup with Alex.
- Race Lift: Maggie is now explicitly non-white, played by Italian actress Floriana Lima.
- Satellite Love Interest: She barely had a role outside of being Alex's girlfriend.
- Secret Keeper: In the know that Kara is Supergirl, Clark is Superman, Mon-El is from Daxam and James is Guardian.
- Ship Tease: With Alex that eventually leads to Maggie confessing her feelings to her and them hooking up at Alex's apartment.
- Trademark Favorite Food: Discussed by Alex.Alex: (to Kara) And, oh, she loves tiramisu. I mean, could eat it for every meal, literally. It's like her happy food.
- Twofer Token Minority: Invoked by Maggie when she talks about growing up in Nebraska as a non-white lesbian.
- Two First Names: "Sawyer" can also be a first name.
- Workaholic: According to an ex-girlfriend, she broke up with Maggie partly because of this. (This seems to be an Informed Flaw, however, since Alex seems to be the workaholic of the two.)
Species: Cursed human
Portrayed By: Harriet Sansom Harris
Siobhan Smythe's aunt.
- Affably Evil: She is friendly while discussing her murders.
- Black Widow: Implies that she killed her husband with her power in the past.
- Con Man: Has genuine magical power but mostly just tricks "muggles" into buying fake magical objects.
- Evil Aunt: Evil in a sense that she teaches her already wayward niece to further embrace the evil within her. Otherwise, Siobhan sees her as a Cool Aunt.
- Evil Mentor: Teaches Siobhan about her power and tells her that the only way to quiet the scream of the Banshee in her mind is to kill the person who angered her.
- Evil Redhead: She's evil, and she's Irish.
- Informed Ability: She says she also has Siobhan's screaming powers. It is never shown onscreen.
- Karma Houdini: She heavily implies to have killed her husband, but she's still roaming around running her business.
- Make Me Wanna Shout: Has the same power as Siobhan due to the family curse though she's never seen using it onscreen.
- Oireland: Unlike Siobhan, she has the (fake) accent and the red hair of a stereotypical Irish woman.
- Only One Name: Her last name is never revealed.
- The Unfought: She is a villainous character but Kara doesn't fight her. In fact, she probably doesn't know about her.
- Villainous Friendship: She and Siobhan seem to genuinely like each other.
- Wolf in Sheep's Clothing: An Affably Evil woman disguising herself as a Funny Foreigner.
Portrayed By: Tamzin Merchant
Voiced By: Nallely Solís (Latin-American Spanish dub)
A self-proclaimed alien warrior from Starhaven, actually an art thief from Valeria.
- Action Girl: She takes out two alien thugs at once in the alien bar, single-handedly. Even though it's later discovered the thugs were hired to harass Winn, she still has combat ability. Later, she joins Guardian and Winn's crime-fighting team, though she's a little over-enthusiastic at first.
- Becoming the Mask: Used Winn in a plan to steal a VanGogh to save her brother. In doing so she ended up forming real feelings for him over time.
- Big Sister Instinct: Plans the entire Art Heist in an attempt to rescue her brother, who is being held for ransom.
- Bitch in Sheep's Clothing: All her affections for Winn are just for show in order for her to accomplish a con. Or, at least, that's how she makes it appear.
- Canon Foreigner: Lyra does not exist in any other DC canon. Starhaven does exist, however; it's the home of Dawnstar, a winged superhero - Lyra, as far as we know, is wingless.
- Can't Take Criticism: Lyra gets angry when James tries to kick her out from his team.
- Con Man: She romanced Winn to gain access to a museum for a Long Game art heist.
- Crapsack World: Starhaven, according to Winn, "smells like cinnamon". Lyra corrects him, saying a blight struck the planet and is no longer a paradise world.
- Cute Monster Girl: She has visible ridges running across her face that clearly mark her as alien. However all other aspects of her are attractive by human standards, and her shyness while out on a real date with Winn only enhances her cuteness. Subverted in that shyness was all an act initially.
- Easily Forgiven: Despite using Winn, he still forgives her because she did it all to save her brother. He even agrees to allow her to help Guardian.
- Good Is Not Nice: She can be outright aggresive in her vigilante work.
- HeelFace Revolving Door: Started out as Winn's girlfriend and at one point aided him and Supergirl to help save a group of alien prisoners. Then it was revealed that her romance with Winn was a front for her criminal activities. Then it was revealed that said criminal activities were under duress in order to save her brother. Then Winn forgave her and even brought her on board to become Guardian's crime-fighting partner.
- Interspecies Romance: With Winn, a human.
- Limited Wardrobe: Other than the red dress she wore in her and Winn's first offical date, she's always clad in the same Biker Babe outfit.
- Phantom Thief: As a Valerian, she's invisible to cameras.
- Rescue Romance: Gets acquainted with Winn after she rescued him from alien bullies. Subverted in that she picked him out and staged the bullying of Winn.
- Shoo the Dog: She flatly tells him she never loved him. She's sincere, though she's clearly touched after everything is said and done when he tells her he still is attracted to her and forgives her for using him. Ultimately, a genuine romance begins.
- Trapped in Villainy: While she is indeed a cat burglar, she manipulated Winn into helping her steal Starry Night to save her brother, a hostage of an art fence.
- What Happened to the Mouse?: When last seen she and Winn were still going strong, even on the verge of forming a Power Trio with him and James in their work as vigilantes, but she up and vanishes near the end of season 2. Borders on Chuck Cunningham Syndrome in Season 3, where she doesn't even get a single mention, not even when her boyfriend leaves for the future.
Fiona "Fi" Byrne
Portrayed By: Tiya Sircar
A bartender, group therapist and Alien rights activist.
- Almost Dead Guy: She survives the initial stabbing by Agent Liberty to be used to control other aliens. As soon as J'onn and Manchester find her however, she expires.
- Disposable Woman: Her death is what causes Manchester to go on the warpath.
- Sacrificial Lamb: She is introduced as a good friend of J'onn, but hardly lives for 2 episodes.
- Telepathy: Her powers, combined with The Empath.
Species: Shapeshifting Dragon
An alien dragon living disguised as a pet iguana under the care of a girl named Alana.
- All Animals Are Dogs: He acts very much like a fire-breathing, jet-sized dog, protective of his family.
- Beam-O-War: He pits his dragon flame against Supergirl's cold breath. It ends in a stalemate.
- Gentle Giant: He is actually peaceful and even cuddly when he doesn't protect his family against threats.
- Instant Awesome: Just Add Dragons!: There really is no other reason for his inclusion.
- Kid with the Leash: He listens to a little girl named Alana.
- Lightning Bruiser: Not just incredibly strong, but also fast enough to keep up with Supergirl.
- Mugging the Monster: The Children of Liberty made a bad mistake when they attacked his family.
- Our Dragons Are Different: A dragon that is classified as an alien lifeform rather than a magical creature, and is capable of shape-shifting.
- Shapeshifting: Though its not stated whether he can transform into more than just his iguana form.
- Sleep-Mode Size: His iguana form.
Portrayed By: Levi Miller
Voiced By: Iván Bastidas (Latin-American Spanish dub)
Cat Grant's shy and sensitive son.
- Adaptation Name Change: In the comics, Cat's son is named Adam Morgan. It is then revealed that they're a Decomposite Character.
- Ambiguous Disorder: Emphasis on Ambiguous; Cat stresses to Kara that Carter is "special," and his shyness and poor impulse control could imply that he's on the Autism Spectrum.
- Decomposite Character: With his half-brother Adam Foster, for Cats son in the comics, Adam Morgan. He gets the age while Adam gets the name.
- The Gadfly: When his mother starts grilling him about what he admired about Supergirl, he immediately answers that it's her fantastic legs. He lets her stew a little before admitting that he's joking.
- Hero-Worshipper: Aside from having a Precocious Crush on her, he also likes the heroic stuff that Supergirl does.
- Like Father, Like Son: Upon meeting James Olsen, his first reaction is trying to use him to meet Supergirl, just like her mother.
- Long Bus Trip: Very unlikely to appear again due to Cat being demoted to a Recurring Character.
- Nom de Mom: He uses his mother's surname rather than his father's.
- Precocious Crush: He is infatuated with Supergirl, even before meeting her in person.
- Sibling Triangle: He has a crush on Supergirl, while his older half-brother openly flirts with Kara.
- Two First Names: Per the DC Comics norm.
Portrayed By: Joan Juliet Buck
Cat Grant's mother.
- Jerkass: Every other word out of her mouth is a passive aggressive putdown.
- Long Bus Trip: Very unlikely to appear again due to Cat being demoted to a Recurring Character.
- Meaningful Name: Partly based on Katharine Hepburn, if only in a stern matron way.
- New Media Are Evil: Or at the very least, she believes they are inferior to old media.
- Odd Name Out: While she has the phonetic "K" sound like her daughter and youngest grandson, her name actually starts with "K". She calls Cat "Kitty", however.
- One Steve Limit: She and her daughter share the same name aside from a different letter at the very beginning.
- Parental Neglect: Of the emotional variety, towards her daughter and grandson.
- Shadow Archetype: She lacks Cat's goodness.
- Two First Names: Per the DC Comics norm.
Portrayed By: Xander Berkeley
The owner of Lockwood Family Steel and the father of Ben Lockwood / Agent Liberty.
- Celebrity Paradox:
- Driven to Suicide: Well he thinks this — blaming aliens for his business going under and purposefully waiting in his refinery to die during the Daughters of Juru' terraforming rather than acknowledge that he let his sense of Pride cloud his business judgement.
- Family Business: He used to own a steel factory. It ran out of business due to his customers switching to the alien Nth Metal, which further fueled his hate; he could've modernized it to stay afloat but he refused.
- Fantastic Racism: He doesn't like aliens.
- Jerk with a Heart of Gold: Outside of his prejudice against aliens, he was a Benevolent Boss, a good parent, and a doting grandparent.
- Never My Fault: He categorically refused to modernize his refinery to process Nth Metal, because "the old ways are the best". When it went bankrupt he refused to take any responsibility for his actions, preferring to blame aliens instead.
- Posthumous Character: He died during the events of the Supergirl Season 3 finale, prior to his son's introduction in the following season, with his appearances happening in flashbacks.
- Racist Grandpa: He had a prejudice aliens, a trait which both his son and grandson share.
- Stuffed in the Fridge: His death is what leads to his son to become an anti-alien fascist.
Portrayed By: Sarah Smyth
Ben Lockwood's wife and George's mother.
Leslie Willis / Livewire
Species: Enhanced human
Known Aliases: Livewire, "Leslie 2.0", "Sparky"
Portrayed By: Brit Morgan
A confrontational radio Shock Jock that gets powers after being zapped by lightning while being saved by Kara.
- Adaptational Attractiveness: Livewire usually has a more Ghoulish appearance in the canon comic line. Here, she retains her feminine appearance after her transformation which is a lot like her cartoon look, though less blue.
- Adaptational Modesty: After becoming Livewire, she doesn't wear her Absolute Cleavage showing Leotard of Power of a costume. Instead, she goes full on Civvie Spandex.
- Adaptation Dye-Job: Before and after becoming Livewire. As Leslie, her hair was black when she was first introduced in Superman: The Animated Series and as Livewire it's (fittingly) electric blue, while here Leslie is blond and Livewire has bluish white hair.
- Arch-Enemy: Kara considers her to be her nemesis. Certainly she's Kara's most recurring non-Arc Villain enemy.
- Berserk Button: After the incident that gave Leslie her powers, she really hates helicopters.
- Breakout Villain: The most popular of Kara's nemesis. Said popularity is the reason why she was made Kara's most recurring foe.
- Civvie Spandex: She's still wearing her casual clothes even as a supervillain.
- Contralto of Danger: Her voice as Livewire sounds more deep and distorted, especially if she's not "physically manifesting".
- Create Your Own Villain: She gave a Take That! to Supergirl on live radio which results to Cat demoting her to traffic report duties. During one of those duties, she was zapped by lightning along with Supergirl while the latter is rescuing her from the chopper she was riding. Said incident gave her powers. After realizing she now has powers, she vowed revenge on both Cat and Supergirl, making their lives hell if she gets the chance.
- Dramatic Irony: Spent most of her time trying to kill Cat Grant and Supergirl, then she dies saving Supergirl.
- Energy Beings: She can exist as pure energy, though she has to take physical form to do more than mess with electronics.
- Establishing Character Moment: As Leslie Willis, we are shown her radio show as the entire cast reacts in varying levels of anger as she callously rips on Supergirl.
- Enemy Mine: Teams up with Supergirl and Psi to fight against Reign.
- Even Evil Has Standards: She intends on killing Cat Grant again in "World's Finest", but when Cat pleads for her life because she doesn't want her sons to be left alone without a mother, Livewire is visibly affected and starts to reconsider, unlike Siobhan.
- Evil Feels Good: She clearly gets a rush from using her powers to get revenge on Cat.
- Evil Is Hammy: Brit Morgan is clearly having a blast with the role.
- Foil: To Kara Danvers. Both of them are protegees of Cat Grant, who tries to "push" them to greatness. Leslie has become cruel and vindictive in her attempt to "push" back, while Kara remains patient and friendly.
- Freudian Excuse: As a shock jock, Leslie has always been rewarded for being mean and nasty, leading Cat to feel she is to blame for Livewire's actions as the one who has been rewarding her for years.
- Heroic Sacrifice: She does this to save Supergirl and is fatally injured by Reign's eyebeams. Supergirl even mourns her after her death.
- Instant Expert: She gains control of her powers remarkably quickly.
- Jerkass: She starts the episode by going on a long rant about all the reasons she thinks Supergirl is awful and from her conversation with Cat, this seems to be her standard M.O.
- Just for Pun: A Shock Jock getting Shock and Awe powers.
- Kryptonite Factor: Water really doesn't play well with Livewire.
- Lightning Can Do Anything: From manipulating electronics to forming whips. This is given a justification in that she got zapped by lightning that was filtered through Kryptonian biology.
- Locked into Strangeness: Getting struck by lightning through Supergirl gave her white hair and electricity powers.
- Mugging the Monster: Immediately after discovering her ability to move through wires, she finds herself in an alleyway. A lowlife attempts this trope on her, even commenting on the stupidity of someone as good looking as she was coming to that part of town. It doesn't end well for him.
- Mystical White Hair: She has white/very light blue-ish hair and is a Psycho Electro.
- Mythology Gag:
- Leslie's rebirth as Livewire is the same as in her first appearance, being struck by lightning through a Kryptonian just like in the similarly named debut episode for her character in Superman: The Animated Series. She was also introduced in that episode insulting Superman on her show.
- Her defeat in Livewire is also identical to her defeat in the same episode.
- She also gives a remarkably similar speech about her rebirth.Livewire: Leslie Willis is dead. Meet Leslie 2.0. ''
- Nice Job Fixing It, Villain!: After Kara spends two episodes struggling to restore her reputation after her Red Kryptonite-induced rampage, Livewire impulsively tries to shoot down a police helicopter. Kara takes the hit herself in front of a huge crowd, who start seeing her as a hero again.
- Not Me This Time: Lucy blames the early stages of Myriad on her. She really has nothing to do with it, as she was obviously imprisoned at the time.
- Psycho Electro: She's got a few screws loose after she gets her powers.
- A Pupil Of Mine Until She Turned To Evil: She is Cat Grant's first protegee gone bad, the second being Siobhan Smythe aka Silver Banshee. Cat later lampshades this.
- Redemption Rejection: During their first fight, Kara offers to help her. She says she's "good as is."
- Redemption Equals Death: She jumps in front of Supergirl to save her from Reigns eye beams, she dies moments after Reign flees from the battle after Psi uses her abilities on her.
- Ride the Lightning: Is able to travel by wire, or even hijack television screens to plaster her face over it.
- Rogues-Gallery Transplant: Livewire is usually a Superman villain, at least until her HeelFace Turn in the comics, who originated in Superman: The Animated Series, before popularity made her a canon comic character. Her creation in this show is almost exactly like it was in the cartoon, except the lightning passed through Kara instead of Superman.
- Shock and Awe: She's got electricity powers.
- Shock Jock: Of course, crossing Cat Grant by going after Supergirl had gotten her transferred to traffic helicopter.
- Slasher Smile: She can't help herself but enjoy being a Psycho Electro.
- Spoiled Brat: Cat Grant sees her like a daughter who wasn't put limits.
- Statuesque Stunner: She stands 5'8 1/2 and one guy even comments on how hot she is.
- Taking the Bullet: She jumps in front of Reign's eye beams to save Supergirl.
- Tall, Dark, and Snarky: On paper, she's a sure-in Statuesque Stunner given her height (she's 5'8 1/2, a little taller than Kara herself) and beauty. However, her Jerkass behavior pretty much overwhelm every attractive traits she has.
- That Man Is Dead: Livewire claims that Leslie Willis died on the helicopter and thinks of herself as "Leslie 2.0".
- Transhuman Treachery: Describes her transformation as "ascendance" while attacking Cat Grant.
- True Blue Femininity: All her outfits has blue in it in one form or another. However, she does not have both the fairness and gentleness usually associated with the trope.
- Villain Team-Up: With Silver Banshee.
- Weaksauce Weakness: Can be incapacitated by little more than a garden hose.
- White Hair, Black Heart: She's a Psycho Electro with a Mystical White Hair.
- With Great Power Comes Great Insanity: Step 1) Realize you have superpowers. Step 2) Try to murder your boss. Apparently, Evil Feels Good. Really good.
- You Gotta Have Blue Hair: She has very light blue-ish hair as Livewire.
Species: Enhanced human
Known Aliases: Bizarro, "Supergirl"
Portrayed By: Hope Lauren (original form), Melissa Benoist (as "Supergirl")
A clone of Supergirl created by Maxwell Lord to discredit her.
- Black Eyes of Evil: Once she's corrupted by green kryptonite, her eyes turn completely black.
- Clone by Conversion: She was made through a combination of gene splicing and plastic surgery.
- Composite Character: Slightly. The original Superman-based Bizarro apparently doesn't exist here, leaving her to simply have that name instead of the comics' Bizarro-Girl.
- Evil Knockoff: Lord created her to ruin Supergirl's reputation and ultimately kill her. She has Supergirl's basic powers, but her Eye Beams freeze and she breathes fire.
- Facial Horror: Getting shot with kryptonite causes her skin to turn grey, and her face starts cracking off, which is a reference to the original Bizarro's look.
- Hulk Speak: On account of being comatose and brain-dead when Max picked her up. Getting her to understand language was impressive in itself.
- Nature vs. Nurture: Despite Lord's best attempts to condition her into a killing machine, she is not an evil person at heart and only ever attempts to kill Supergirl. She even stops fighting Supergirl in their first encounter because Supergirl is trying to rescue some civilians. James tries to appeal to this side of her when she kidnaps him.
- Psychopathic Manchild: As always the case with any Bizarro.
- Tragic Monster: Kara is quick to point out that she's a pure victim of the situation, as a severely brain-damaged woman who's been manipulated into being a soldier in Maxwell Lord's war. After she's defeated, the DEO returns her to her comatose state hoping they can find a way to reverse what was done to her.
- You No Take Candle: Veers between this and a childlike patois.
Siobhan Smythe / Silver Banshee
Species: Cursed human
Known Aliases: Silver Banshee, "Shrieky"
Portrayed By: Italia Ricci
A new hire at CatCo Worldwide Media who clashes with Kara and later Supergirl.
- Adaptation Dye-Job: In her 'civilian' guise comicbook Siobhan has white hair and blue eyes while TV Siobhan has brown hair and brown eyes. Justified Trope as this version could be one of the so-called "black Irish."
- Adaptation Personality Change: In the New52 version of Supergirl, Siobhan Smythe is one of Kara's first friends after she arrives on Earth. Here, she hates Kara and eventually becomes Silver Banshee.
- Adaptational Nationality: The New52 version of the character is an Irish girl who emigrated to America in her late teens. Here she is American of Irish descent.
- Adaptational Villainy: As part of her Composite Character nature. She shares her name with the New52 Siobhan who is a Nice Girl and Kara's friend. In every other aspect she more closely resembles the villainous Siobhan MacDougal of the older comics.
- Alliterative Name: Siobhan Smythe.
- Aloof Dark-Haired Girl: She doesn't give a shit about other people unless they can benefit her.
- Ambition Is Evil: She dreams of becoming a powerful figure.
- Celebrity Paradox: Cat mentions The X-Files early in Season One despite the fact that her actress' Real Life husband is part of that show's Sequel Seriesnote .
- Composite Character: She's named Siobhan Smythe, who was Kara's friend in the New52 comics. However, she is Kara's enemy here, making her more similar to Siobhan MacDougal, the Silver Banshee of the original comics.
- Cursed with Awesome: Her Silver Banshee powers come from an Irish ancestor pissing off a real banshee; now the women of her family are cursed to be unpleasant, and when they feel they have been wronged, the Banshee power develops until the one who wronged them is dead.
- Cynicism Catalyst: When she was 17, Siobhan caught her dad cheating with his personal assistant. This convinced her that everyone is selfish and any kindness is a cheap façade.
- Deceptive Disciple: She seemed a reliable assistant, but she is willing to sell a story to Perry White, a rival to CatCo. She gets fired and Perry White assures Cat that he would not hire Siobhan.
- Evil Cannot Comprehend Good: As Siobhan is so selfish and her opinion of humanity so low, she finds the concept of people acting with altruism and honour laughable, no matter how many times they prove her otherwise.
- Evil Makeover: Gets one from Livewire after they team up.
- Freudian Excuse: She caught her father having sex with his assistant.
- Fighting Irish: She has Irish heritage and her power comes from an old Irish curse.
- From Nobody to Nightmare: Cat had no idea whom she had hired to be her assistant.
- Go-Getter Girl: She is a very driven person.
- Humiliation Conga: Circumstances surrounding her firing, and her actions in an attempt to win her job back, blew up on her face big time.
- Hypocrite: She labels Kara as a "mean girl," despite the fact that she had been treating Kara like dirt since the day they met.
- I'm Not Here to Make Friends: Said word-per-word towards Kara, and it shows.
- Inferiority Superiority Complex: She loves acting smug, but she's easily demoralized when faced with failure.
- In Name Only: Literally the case with her New52 couterpart given she has different nationality, personality, morality, job, family history and even hair colour from the comic Siobhan. She has a bit more in common with Siobhan MacDougal (being evil for instance) but is still quite radically altered.
- It Is Pronounced Tro Pay: Kara had a hard time pronouncing her first name (it's an Irish form of Jane, and pronounced "Sheh-von").
- It's All About Me: She exhibits this in a conversation with Kara about how she intends to become the next Cat Grant, and dismissively says that Kara will be her underling.
- Jerkass: She firmly establishes herself as this when, after Cat fires her, she tries to get back at Kara by impersonating her in a nasty email.
- Make Me Wanna Shout: She finally reveals her powers at the end of "Manhunter", using her screams to break what would have otherwise been a rather nasty fall.
- Moral Myopia: She considers Kara exposing her attempt to send her "evil Supergirl" story to the Daily Planet to be the act of a "mean girl," but shortly after tries to forge an insulting e-mail to Cat so Kara will be fired.
- Never My Fault: She refuses to take any responsibility for the duplicitous actions that got her fired and nearly arrested, instead blaming everything on Kara and wanting revenge.
- Outside-Genre Foe: Mildly. She's the first villain in the show whose powers have a magical rather than a scientific explanation. However, Supergirl and the Flash have no problem defeating her like any other metahuman criminal.
- Persona Non Grata: After intending to sell a scoop to a rival company and impersonate Kara Danvers, Siobhan Smythe is no longer well received in CatCo.
- Primal Scene: She tells Winn that she caught her father literally in the act with his personal assistant.
- Professional Butt-Kisser: She knows how to suck up to the higher-ups at CatCo.
- Redemption Rejection: As Silver Banshee, she shuts down any attempt to help her.
- Rewarded as a Traitor Deserves: A non-fatal example. After Cat discovers that she's planning to betray her, she got herself immediately fired.
- The Rival: For Kara in CatCo.
- Rival Turned Evil: She is slated to become the supervillain Silver Banshee, which was announced weeks before she even appears.
- Role-Ending Misdemeanor: In-universe, intending to sell information to a rival company and trying to defame someone else ruined her work at CatCo and made many employers wary of hiring her.
- Romantic False Lead: For Winn. The two have a brief relationship, which is promptly followed by her becoming a villain.
- Sassy Secretary: She gets the secretary job done much better than Kara, and she won't hesitate to rub it in her nose. However, this only lasts until the job moves beyond butt-kissing, at which point her weaknesses start to show.
- Second Love: She's the first girl that interests Winn after he lets go of Kara. Unfortunately for him, she goes to the dark side.
- Sexy Secretary: She's easy on the eyes.
- Skilled, but Naïve: She's a good PA and a great Professional Butt-Kisser, but she can't match Kara's years of experience at learning Cat's every quirk and pet peeve.
- Small Name, Big Ego: Despite acting and talking big, she doesn't really live up to her boasts.
- Smug Snake: She always displays an aura of overconfidence when around Kara, despite not being nearly as cunning as she thinks she is; her Wrong Genre Savvy acts quickly come back to bite her in the ass.
- Super Strength: She's able to send Kara flying with a punch.
- Traumatic Superpower Awakening: Her power awakens and saves her at the last minute from what would have otherwise been a rather nasty fall.
- Villain Team-Up: With Livewire.
- Wrong Genre Savvy: The cause of her downfall as she assumes being an Alpha Bitch and Professional Butt-Kisser will make her "bigger than Cat Grant" in no time, not grasping she doesn't have the smarts, talent or dedication to be anywhere near Cat's level.
- When Cat is uncertain about publishing a story of Supergirl gone rogue, Siobhan tries to sell it to the Daily Planet, thinking they'll love a scoop on a rival. She doesn't expect Perry White to have the integrity to call Cat and tell her about the deal.
- Cat openly lampshades how Siobhan thinks she's the "plucky go-getting reporter" who will make a big splash with the story and Cat will be so impressed by her gumption that she'll hire Siobhan on as a full writer. Instead Cat calls Siobhan a "backstabbing imp" and fires her.
Rudy Jones / Parasite
Species: Enhanced human
Portrayed By: William Mapother
A climate change expert who is infected with an alien parasite.
- Adaptation Deviation: In the comics, Rudy was a STAR Labs janitor who became a mutant when exposed to radioactive waste. The Supergirl version is infected with a literal symbiotic parasite akin to the facehuggers from Alien.
- Adaptational Heroism: He has good intentions when stopping climate change deniers, since for him they are harming the planet.
- Celebrity Paradox: Lost was mentioned during the Arrow series premiere, even though his actor plays a major antagonist there. However, Arrow is on an Alternate Universe, so the paradox might be a subversion.
- Comic-Book Movies Don't Use Codenames: He's only referred to as Parasite once, by himself, when fully transformed and trying to kill Mon-El.
- More Teeth than the Osmond Family: For each of his Nested Mouths, no less.
- Nested Mouths: His Parasite form has several of them.
- Power Parasite: He has the ability to drain energy from his victims.
- Purple Is Powerful: As with most versions of Parasite, he has a purple color scheme.
- Rogues-Gallery Transplant: Parasite is usually a Superman villain. He also fought the Linda Danvers version of Supergirl, but never the Kara Zor-El version of Supergirl.
- Shout-Out: Both to Alien and The Thing — an extra-terrestrial found frozen in an icy environment in the guise of a dog that kills most of the scientists working there, and when its true monstrous form is revealed, it opens its maw hiding even tinier mouths.
- Was Once a Man: Once an ordinary human, until he became infected with an alien parasite.
- Well-Intentioned Extremist: Most versions of Rudy were apathetic citizens or petty criminals at worst. Rudy here is a fanatical climate change scientist who believes he is saving the world, and eliminates anyone who might impede his scientific work.
Gayle Marsh / Psi
Species: Enhanced human
Portrayed By: Yael Grobglas
A bank robber who has the ability to instill fear in others. Born in Skokie, Illinois, the same as her comic counterpart.
- Adaptation Dye-Job: All comic versions of Gayle have black hair. Here she has light blonde hair.
- Adaptational Villainy: In the comics, Gayle uses to play the role of misunderstood antagonist or naive girl who has been deceived into doing bad things. In the show she's an outright criminal.
- Big Damn Heroes: Saves Supergirl from Reign by causing her fears to manifest, which causes her to flee.
- Enemy Mine: Is recruited alongside Livewire by Kara and Imra to assist them during their mission to Fort Rozz.
- Mind over Matter: She even uses the phrase on Kara. Becomes an Ironic Echo when Kara overcomes her powers and then knocks her out.
- Pet the Dog: Actually saves Kara instead of just running away and offers her condolences after Leslie's death.
- Person of Mass Destruction: During the climax, she assaults an entire street, including a construction worker operating a wrecking ball, which wreaks some serious havok.
- Psychopathic Womanchild: Her behaviour is very off, citing child stories and acting like a little girl playing with her toys.
- Supernatural Fear Inducer: Her powers. Her fear waves are sometimes so strong that they can physically knock back a person, even a superpowered one like Kara.
- Suspiciously Similar Substitute: After :Livewire's death] Psi seems to be taking up the mantle of Kara's slightly mentally ill nemesis with the potential for future redemption. Their physical resemblance additionally contributes to that.
Winslow Schott Sr., aka Toyman
Known Aliases: Toyman
Portrayed By: Henry Czerny
Winn's father, a genius toymaker who snapped after his designs were stolen and became obsessed with revenge at any cost.
- Abusive Parents: When Winn was a child he drove Winn and his wife off the road when they tried to get away from him, and he threatened to kill Winn if she ever tried to take Winn away again. By the time of the series, he tried to force Winn to kill Chester Dunholtz to ride him into villainy.
- Action Dad: He is Winn's estranged father and a scary man with harmful weapons disguised as toys.
- Adaptation Dye-Job: He's an Evil Redhead in the comics. Here, he has gray hair and his actor has brown hair in his youth.
- Asshole Victim: His company and his toys being stolen causes less sympathy now that it was revealed that he was very abusive to his wife and he was willing to kill his own son all along.
- Badass Normal: He has no powers, but he's a genius inventor who's able to pose a threat to Kara.
- Celebrity Paradox: Quantico is mentioned on Season Two. His actor plays a Recurring Character there.
- Crazy-Prepared: The main reason he's able to be a threat to Supergirl despite being a normal human.
- Domestic Abuse: It turns out he was abusive to his wife and forced her to stay away from Winn.
- Even Evil Has Loved Ones: Deconstructed. He calls Winn his greatest creation and is obsessed with being together with him, even if they're both in prison. He even says that he wants Winn to become even eviler than he is.
- Four Eyes, Zero Soul: He wears glasses with very thick lenses.
- Gadgeteer Genius: He makes all of his weapons.
- I Have No Son!: Inverted. Winn was the one who (rightfully) disowned him.
- Improvised Weapon: All of his weapons are modeled like toys.
- Killer Yo Yo: Uses one when he escaped.
- Not His Sled: As noted with Winn, it's the inverse of the "Winslow Schott Sr./Jr." situation on Superman: The Animated Series: It's Senior who's Toyman, not Junior.
- Rogues-Gallery Transplant: He's a Superman villain in the comics, but here he is a Supergirl villain.
- Sanity Slippage: He snapped after his company was stolen from him, and being imprisoned for almost two decades just made him worse. Except he was always evil, since he was always a domineering man]
- They Look Just Like Everyone Else!: Winn said his dad was a very happy toymaker. But it turns out Winslow was always secretly angry deep down, but never said anything.
Veronica Sinclair / Roulette
Known Aliases: Roulette
Portrayed By: Dichen Lachman
An old classmate of Lena Luthor who runs illegal fight clubs that cater to the rich and powerful. Her latest fight club is an alien one with willing and not so willing participants.
- Adaptational Wimp: Her comics counterpart was a competent fighter in her own right. Here she doesn't have any need to fight.
- Aloof Dark-Haired Girl: She has a very apathetic demeanor.
- Celebrity Paradox: Winn explicitly mentions Doctor Who during the battle with Indigo. Her actress guest-starred on the Spin-Off Torchwood: Miracle Day.
- Dragon Lady: Complete with dragon tattoos all around her body.
- Fantastic Racism: Roulette's schemes are often at the cost of aliens. As aliens have no rights, she is willing to exploit them to make a quick buck.
- Fight Clubbing: She's the main promoter of a string of illegal fight clubs. The latest one uses aliens for fighters. Not all of them willingly.
- Foil: She and Lillian Luthor. Both have Fantastic Racism, abuse aliens in shadowy organizations and utilize Screw the Rules, I Have Connections!. However, Veronica is a society Grand Dame with no reason to hide while Lillian is an Evil Matriarch who prefers to work behind closed doors.
- For the Evulz: She hosts her fight clubs not for the money, but because she enjoys the blood sport.
- Fur and Loathing: Will occasionally wear a black fur coat when she goes out.
- Karma Houdini:
- She's able to weasel out of trouble in her debut appearance due to having the right friends in the right places. However Alex and Maggie make it clear that they're both keeping a close eye on her activities.
- In her second appearance she's apparently left stranded on an alien planet where some buyers had been expecting to get human slaves, though nothing's made clear.
- Lady in Red: Always wears a red Qipao.
- Large Ham: But only in the ring. Outside she's more soft-spoken and chilling.
- Limited Wardrobe: Wears the same red Qiapo and black fur coat every night.
- Loophole Abuse: At the time of the episode, aliens weren't protected by the law, which is why Sinclair escaped custody so quickly.
- Nerves of Steel: You wouldn't run an alien fight club if you were afraid of them. Not even Supergirl Heat Visioning her can make her blink. She doesn't even spill her champagne.
- Off on a Technicality: It's hard to keep her incarcerated.
- Race Lift: In the comics she's a white girl who wants to be a Dragon Lady and so dresses the part. Here she's of Asian descent, like she was in Smallville.
- Rich Bitch: Her Back Story, according to Lena. If so, she hasn't changed one iota as an adult.
- Screw the Rules, I Have Connections!: She has friends in very high places, which comes in handy when the police come knocking...
- She's Got Legs: Which her Qipao shows off quite nicely, as seen above.
- Smug Snake: In spades.
- Soft-Spoken Sadist: She relishes blood sports and can be very chilling if she was to.
- Tall, Dark, and Snarky: She's quite tall and very apathetic.
- Villain with Good Publicity: The aliens in her club saw her as a savior not an abuser, until Kara convinced them otherwise.
- We Have Reserves: When asked about the aliens who die in the ring by Supergirl, she smugly replies there's plenty more where they came from.
- Woman Of Wealth And Taste: She's from the same social circles as Lena Luthor.
Known Aliases: Barrage
Portrayed By: Victor Zinck, Jr.
A Vigilante who hunts criminals who managed to get court acquittals.
- Adaptational Deviation: In the comics, Phillip is an out-and-out villain; in this series, he's a Vigilante Man and Well-Intentioned Extremist.
- Arm Cannon: Uses a wrist-mounted machine gun similar to the ones used by Deadshot.
- Comic-Book Movies Don't Use Codenames: The show doesn't designate Phillip by his "Barrage" name from the comics.
- Crusading Widower: He becomes a Vigilante Man after his wife's murder.
- Expy: Basically the show's version of The Punisher.
- From Camouflage to Criminal: He was a revered Navy SEAL until his wife's murder causes him to snap.
- Judge, Jury, and Executioner: Chiefly because he thinks the legal system has failed.
- Malevolent Masked Man: His armor has a thick helmet.
- Roaring Rampage of Revenge: For the acquittal of his wife's murderer.
- Rogues-Gallery Transplant: Variation - is actually a D-list Superman villain from the comics, yet his primary feud are against James Olsen and Maggie Sawyer.
- Sociopathic Soldier: Being consumed by vengeance has nullified his regards to others.
Portrayed By: Chad Lowe
A former lawyer who turned to alcoholism before he found a new purpose in his life after being rescued by Supergirl.
- Affably Evil: He's easily one of Supergirl's nicest human enemies. When Kara visits him in prison, he claims he already forgot the name of her civilian identity, but he calls her business number when he wants to warn her about Reign, meaning he lied to ease her mind.
- The Bus Came Back: Warns Kara about Reign in the mid-season finale of Season 3. And later joins Reign.]]
- Cult: The leader of one who hails Supergirl as a Messiah and a God.
- The Cynic: Before being saved by Supergirl, he was at a low-point due to being recently divorced after discovering that his wife was cheating on him with her personal trainer.
- Desperately Looking for a Purpose in Life: The reason why he founded the Cult. Whether by outside influences or his own design, he has nothing left in his life outside of worshiping Supergirl.
- The Dragon: To Reign, after his FaceHeel Turn. And later briefly to Selena, before she disposes of him.
- From Nobody to Nightmare: From an alcoholic ex-lawyer to a dangerous Cult leader.
- The Fundamentalist: Takes his beliefs to dangerous extremes, encouraging people to purposely endanger their lives to experience being saved by Supergirl, and even planning to blow up a stadium in order to make her save hundreds at once. He later turns on Supergirl and allies himself with Reign, believing Reign's rule over Earth is preordained.
- My God, What Have I Done?: After seeing Kara bleed under the effects of kryptonite, he realizes how he screwed up and helps Kara and Alex dispose of the bomb. His faith isn't entirely shattered, however; now he sees it as his mission to guide Kara toward her destiny, even offering her information on Reign that Kara herself couldn't find with Krypton's vast library at her disposal.
- Not Quite Dead: In the finale, he is shown to have survived being blasted by Heat Vision, drags himself into the Kryptonian Ship and sends a distress call. Its not shown whether he ultimately survives his injuries or not.
- Obliviously Evil: He's a nice and compassionate man who genuinely does not understand why encouraging his flock to endanger themselves and others for their belief is wrong.
- The Quisling: Following Supergirl's initial defeat by Reign's hands, he's all too happy to align himself with the Kryptonian Worldkiller cult to aid with them terraforming Earth.
- Secret Keeper: He knows Kara is Supergirl at a glance, but promises to respect her desire for privacy.
- Well-Intentioned Extremist: He is not actually Kara's enemy. However, ever since Kara saved his life, he started to worship her as a god and offers her his help because he sees that she is in conflict with her civilian life and her life as a superhero. In his attempt to make more people believe in Supergirl, he endangers a lot of other innocent people and the members of his cult, though, and Kara almost dies when he intends to detonate a bomb laced with kryptonite.
- You Have Outlived Your Usefulness: On the receiving end by Selena. After fulfilling his part in resurrecting Reign, she seemingly kills him with her Heat Vision.