Character Page for Moon Girl and Devil Dinosaur (2023). For the characters as they appeared in the comics, go here.
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Main Characters
Lunella Lafayette/Moon Girl
Lunella Lafayette / Moon Girl
Voiced by: Diamond White
Click here to see her civilian form
The world's smartest 13-year-old and a superhero determined to protect New York's Lower East Side.
- Adaptational Backstory Change: In the comics, Lunella's superhero alias "Moon Girl" started out as a teasing nickname from bullies. In the show, it comes from a long-lost scientist whom Lunella admires but doesn't know the real name of who is later revealed to be Mimi. Also, in the comics Lunella accidentally summoned Devil Dinosaur with a Kree device that she was using to suppress her Inhuman genes, while here it was with a machine that Lunella mistook for a power generator.
- Adaptational Nice Guy: In the comics she's far more socially withdrawn with a more defensive personality due to the heavier focus on her being bullied at school and her struggle to be taken seriously by her superhero peers due to how young she is. Her brattier qualities and Insufferable Genius attitude are significantly toned down for the show. What's more, she's shown to be given more respect from SHIELD, fellow superheroes (like Sam Wilson/Captain America) and the science community.
- Adaptational Personality Change: Lunella in the cartoon is much friendlier than her comics counterpart. Her team up with Devil Dinosaur is an affectionate partnership as opposed to the more owner and pet relationship of the comic. Cartoon Lunella is also more sociable, having a close friendship with Casey and eventually overcoming her social anxiety about parties. She also briefly expresses dismay at not having superpowers, whether as comics Lunella actively tried to avoid developing superpowers from her Inhuman genes.
- Adaptational Secrecy Downgrade: Inverted. Where in the original comics, the general public immediately deduces Lunella's secret identity as Moon Girl, here she keeps up the masquerade very well with only three people knowing Moon Girl's secret identity: Casey, LOS-307, and her grandmother. In the Season 2 finale, she reveals the identity to the rest of her family.
- Adaptational Species Change: From an Inhuman in the comics to a normal human in the series.
- Adaptational Superpower Change: In the comics, Lunella's Inhuman power is switching minds with Devil when experiencing strong emotions or during a full moon. In the show she normally lacks superpowers and only experiences the mind swap in one episode due to a malfunctioning invention of hers.
- Age Lift: Originally 9 in the comics but 13 here, as the writers felt her social media use would be more believable if she were older.
- Alliterative Name: Lunella Lafayette.
- Ambiguously Bi: In "Dancing With Myself", one of the students she considered asking to the dance was a girl, though it's possible she was just desperate and only wanted to go as friends like she suggested to Casey.
- Badass Adorable: An excitable, dorky, bespectacled young heroine who makes great use of her gadgets, smarts and friends' help to defeat supervillains much older than her.
- Brains and Brawn: She's the brains to Devil's brawn. While she's by no means a slouch in a scuffle, Lunella is the world's smartest thirteen-year-old who casually builds nuclear fusion reactors in her room. Meanwhile, Devil is a tyrannosaurus capable of flattening cars with ease.
- Bubble Gun: One of her offensive weapons. It leaves its targets Floating in a Bubble.
- Character Development: A lot of the aesops of the series' episodes apply to her, helping her grow as both a person and a superhero.
- Child Prodigy: She boasts that she's the world's smartest 13-year old, and she spends her free time building gadgets in her secret lab. Her own dad calls her intelligence "scary" at one point, and The Beyonder even sought her out because he believes that she's the smartest person on Earth.
- Civvie Spandex: Her superhero outfit is made from stuff she has lying around her house and donations from her community.
- Competition Freak: She has a tendency to get overly-competitive, to the point where her family started secretly having game nights without her. She can get a little obsessive, especially when she's against someone who can actually match her.
- Discard and Draw: After losing her suit when the lab is destroyed in "OMG Issue # 1", Lunella gets a new Moon Girl suit courtesy of Casey, the Sequin Stealth Suit. While it lacks the protective capabilities and various gadgets the original suit had, the reflective sequins on this one allows Moon Girl to essentially become invisible to the naked eye.
- Expressive Mask: Her goggles change to show the expressions in her eyes, along with symbols in especially weird situations.
- Fatal Flaw: As shown in "Check Yourself!" she has a serious competitive streak. Her competitive nature causes her to completely ignore her opponents and focus on the game even when they're trying to be friendly with her. And in the episode "Make It, Don't Break It!" she's also shown to take any criticism very harshly (because she rarely gets any) and become so obsessed with it that she can neglect her other duties, especially if it's in pursuit of a goal that she wants.
- Gadgeteer Genius: Lunella has several inventions under her belt: such as the temporal vortex generator that brought Devil to the Big Apple, and has incorporated several into her Moon Girl costume; such as a jet pack made from fans, a pair of shoes that double as rollerskates equipped with retractable metal claws to kick in windows, a squirt gun that blasts liquid that traps foes in large blue bubbles, and her signature red boxing glove launchers.
- Hard Light: In "Kid Kree", thanks to collaborating with Mel-Varr, she develops a special bracelet which could project barriers and arm blades made of hardlight.
- Intelligence Equals Isolation: Lunella used to eat lunch alone with her books, aside from Eduardo occasionally asking her to solve a Rubik's cube like a party trick. She also tells Casey that she's never had a friend before. She's also shown in "Goodnight, Moon Girl" to suffer from social anxiety.
- Jet Pack: Well, more like a "fan-and-hairdryer" pack, but Lunella has built one for herself to fly.
- Kid Hero: She's 13, and most of her adventures involve not just beating a villain, but learning about life.
- Little Miss Snarker: She gets a ton of sass in, whether as Lunella or Moon Girl.
- Nice Girl: She's shown to be a friendly, caring girl with a deep love for her family and community in the first five minutes of the pilot. She also ends up resolving issues with some of her villains peacefully rather than simply punching them out (although it sometimes comes to that, depending on the villain).
- Non-Indicative Name: As Gravitas points out, Moon Girl's abilities have nothing to do with the Moon.
- Omnidisciplinary Scientist: As the self-proclaimed "world's smartest thirteen-year-old", Lunella dips into virtually every field of science imaginable. Through her inventions and actions, she demonstrates in-depth understanding of everything from biology to particle physics to chemistry. She builds a fusion reactor as a "basic" addition to her homemade lab and is also a highly capable computer engineer.
- Red Boxing Gloves: Uses boxing gloves as her main weapon.
- Rocket Punch: Moon Girl's gloves can be launched at targets. Don't worry, she's got "Boxing gloves for days". And later on throughout Season 2, these boxing gloves get a good Mid-Season Upgrade with plenty of "glove mods", as she creates a grappling glove to grab targets with, a Smokescreen Glove, an "Electro Glove", and a giant boxing glove for a Megaton Punch.
- Rollerblade Good: Given that her family runs a roller skating rink, it makes sense she would incorporate skates into her superhero costume.
- Rubik's Cube: International Genius Symbol: Eduardo apparently has her entertain him at lunch regularly by giving her an unsolved cube so she can solve it one-handed without looking.
- Scary Shiny Glasses: Lunella has more than a touch of Mad Scientist in her personality and when she gives into it, her glasses do that thing.
- Secret Identity: Outside of Casey, Lunella tries to keep her identity as Moon Girl a secret from most of the city, especially her family.
- Steven Ulysses Perhero: Unlike the comics where Moon Girl was an Appropriated Appellation, here her codename having "Moon" in it and her real name having "Lune" in it is a complete coincidence.
- Too Clever by Half: She's a scientific genius but a lot of her problems are caused by her experiments not working exactly the way she intended, or her simply not thinking things through.
- Where Does He Get All Those Wonderful Toys?: While Lunella designs most of her gadgets herself, it's never specified where she gets the components for all this stuff. Despite her family mentioning financial difficulties in the first episode due to the rolling blackouts, Lunella has no apparent issues sourcing materials for portal generators, fusion reactors, Pym Particles, and other fantastic equipment without her parents' knowledge. Casey is also able to completely remodel Lunella's lab without issue despite installing expensive appliances like 3-D printers and an entire juice bar.
- Wingding Eyes: In addition to imitating her eye movements, Lunella's goggles also show up different wacky designs dependent on what she's feeling, like a loading circle when figuring something out or question marks when confused.
Devil Dinosaur
Devil Dinosaur
Voiced by: Fred Tatasciore
A red Tyrannosaurus rex accidentally summoned to present-day New York by Lunella.
- Adaptation Species Change: While he looked like even more of a T. Rexpy in the comics, he was actually a fictional type of dinosaur called a Devil-Beast. This show outright states he's a Tyrannosaurus rex.
- Adaptational Backstory Change: In the comics, Devil Dinosaur was originally the companion of the caveman Moon Boy, who died at the hands of rival cavemen shortly before the dinosaur was sent into the present. In the show, Moon Boy is never seen or alluded to.
- Adaptational Superpower Change: Unlike his comics counterpart, Devil cannot breathe fire.
- Affectionate Nickname: Lunella often calls him "D".
- Alien Arts Are Appreciated:
- He becomes very fond of hot dogs, the LES, music, and movies in the first episode.
- The catalyst for his issues in "Devil On Her Shoulder" is that he can't go to the opening of a kaiju movie with Lunella and Casey.
- He is a skilled painter and an annual pass-holdier at the National Art Institute of New York.
- Alliterative Name: Devil Dinosaur
- All Animals Are Dogs: Looks frightening, but comes across as a playful puppy in the body of a dinosaur. He even licks Lunella like a dog, and tracks an escaped hamster by scent.
- Amplified Animal Aptitude: From the moment he arrives in New York, he understands Lunella speaking English. He also responds to commands like a dog, gets emotional during a visit to the movies, has enough dexterity to play jump rope, and understand gestures like fist bumps. Later on, he develops a love of painting, creating remarkably detailed works of art using nothing but his tail, an easel, and common oil paints.
- Animals Not to Scale: A featurette states he's 50 feet long, roughly 10 feet longer than a regular Tyrannosaurus.
- Badass Adorable: He's as badass and imposing as the giant dino he is, but also acts like a loyal and playful puppy.
- Benevolent Monsters: He's a gigantic, carnivorous dinosaur with a terrifying name who's strong enough to do serious damage to property and people (especially if said people are hurting Lunella/Moon Girl or Casey). At the same time, he's a Gentle Giant with a fondness for hot dogs who likes to help people and has formed an unbreakable bond with Lunella.
- Berserk Button: Do not. Ever. Threaten Lunella. In front of him.
- Big Friendly Dog: Courtesy of All Animals Are Dogs, this is his general demeanour and behaviour. He's basically a St Bernard with scales, and the rest of the cast treat him accordingly.
- Big Red Devil: As the name suggests, he's considerably more demonic-looking than the average tyrannosaur, with horns and vivid red scales. It serves as a sharp contrast with his Big Friendly Dog personality.
- Brains and Brawn: Devil is the Brawn to Lunella's Brains. Devil is by no means stupid, but he's still a tyrannosaurus who's easily distracted by hot dogs. Meanwhile, Lunella is the world's smartest thirteen-year-old.
- Cute Giant: Devil acts like a big dog and is rendered in a cute and blocky style that frequently anthropomorphizes him.
- Determinator: In "Coney Island, Baby!", he's shown to be afraid of jellyfish (or, rather, being stung by them). However, when he learns that the Beyonder is stalking her again, he swims to Coney Island, facing his fear, to get to her. The sheer devotion he shows in this act is enough to help Lunella get through her fear.
- Extreme Omnivore: Devil is frequently shown to be a Big Eater, not just of food, but of anything. When Lunella visits his stomach, she and Casey note this.Lunella: That's a football. Oh, you nasty, Devil.
Casey: Is that my math homework? I knew it! - Gentle Giant: This is who he is on a regular basis. He'll cuddle with children, play jump rope, and even paint! Unless you put Lunella/Moon Girl in trouble, then all bets are off.
- Hidden Depths: He has a surprising amount of technical knowledge for a dinosaur, even somehow knowing you can dry a computer's insides by immersing it in rice (though he'd been on Earth for several months by that point, so he could have simply learned about it from Lunella).
- He also has enough emotional maturity to talk down a fellow giant monster who was attacking the city, leading to the two becoming friends.
- A scene in "Coney Island, Baby!" shows that he's a painter, making a self-portrait of himself.
- "In The Heist" reveals him to be quite the art afficionado, having an annual pass to the museum. He even has the absurdly stubborn Dr. Stern's respect with his appreciation of the arts.
- I Choose to Stay: After he's badly injured in a fight with Aftershock, Lunella fears that her attempt to be a superhero has put him in harm's way and decides to send him back to the past. With just enough power to create one more time portal, he reluctantly goes in, but secretly returns to New York just in time to save Lunella from the villain.Lunella: You stayed? But that was your only chance to get home!
Devil: [dinosaur growls]
Woman: What did he say?
Lunella: He said this is his home now. And it's worth fighting for.
Devil: [growls]
Lunella: I'm... worth fighting for. - Intelligible Unintelligible: The noises he makes are a whole language that Lunella becomes fluent in offscreen.
- Names to Run Away from Really Fast: His actual name is "Terrifying Fire Beast Who Will Bring About The End Of All Things". Casey's horrified reaction explains why Lunella decided to nickname him "Devil".
- The Nose Knows: His sense of smell is keen enough to track a hamster across the densely populated streets of New York City.
- Puppy-Dog Eyes: Lunella learns very early on that he's way better at delivering these than one might reasonably expect from a towering prehistoric apex predator.
- Red Is Heroic: He's primarily all red on the outside, and just happens to one of New York's protectors alongside Moon Girl.
- Rooting for the Empire: In-universe. He's a big fan of kaiju movies, and you get no prizes for guessing whose side he's always on.
- Straight Man: Surprisingly, there are times where Devil isn't as willing to go along with Lunella's schemes. When Lunella tries to create her own hair relaxer in "Hair Today, Gone Tomorrow", Devil is very nervous about what could happen with something this experimental.
- Super-Scream: Devil can roar with enough force to instantly put out fires and push back villains.
- Tastes Like Friendship: He quickly befriended Lunella after she fed him hot dogs.
- Terrifying Tyrannosaur: While he's a Gentle Giant towards his allies, especially Lunella, he's still a ferocious and powerful T. rex as shown during battle.
- Trademark Favorite Food: He loves hot dogs, the first food he tasted on modern-day Earth. Lunella uses them to train him to follow her commands much like dog treats. He uses them as a Comfort Food when he's sad, and eats an entire tableful of them (table included) when he and Lunella go to Coney Island.
- The Unpronounceable: When Lunella asks for his name, he responds with a series of growls and snarls. According to Lunella, these translate literally to "Terrifying Fire Beast Who Will Bring About The End of All Things", but the two decide to call him "Devil" for short.
- Why Did It Have to Be Snakes?: Devil really does not like jellyfish to the point where he looks for way to get to Coney Island without swimming in order to help Lunella. However, when all is said and done, he cares for Lunella more than he fears getting stung.
The Lafayette Family
Adria Lafayette
Adria Lafayette
Voiced by: Sasheer Zamata
Lunella's mother, a DJ at the family's skating rink, and a social activist.
- Absurd Phobia: Due to a traumatic childhood incident, Adria is terrified of hair relaxers.
- Adaptational Personality Change: Is given a more upbeat and lively personality than her comics counterpart.
- Companion Cube: She treats her turntable set like a second child, cooing over it like it's her baby.
- Fantasy-Forbidding Mother: Adria forbids Lunella from doing any superhero work after finding out she's Moon Girl at the end of the first half of Season 2.
- Good Parents: Is shown to be very encouraging of Lunella's altruism, telling her that all it takes is one girl to make a difference.
- The Last DJ: She's the DJ at the roller rink and is often the first to stand up and speak out for what's right. She is the most critical of the decline of the LES from the blackouts, and objects to Moon Girl being suspected as the cause for them after all she's done to help the community.
- Mum Looks Like a Sister: With her youthful looks and upbeat nature, she can easily be mistaken for Lunella's older sister.
- Oblivious Mockery: In episode 2, she plays a remix track making fun of Moon Girl's head size at the rink. Keep in mind she has no idea that Moon Girl is her daughter.
James Lafayette Jr.
James Lafayette Jr.
Voiced by: Jermaine Fowler
Lunella's father and an optimistic businessman in charge of the Roll With It skating rink.
- Amazingly Embarrassing Parents:
- When he demonstrates his take on a blind date event at the rink - with actual blindfolds - to Lunella in a sneak peak, she cannot help but cringe.
- "Skip This Ad...olescene" centers on this, as Lunella gets tired of his embarrassing habits like getting really into cleaning chores, long stories, and public goof-ups at father-daughter outings. However, skipping these causes Lunella to realize that she misses connecting with her dad and learns to appreciate all parts of life with him.
- Bumbling Dad: Played with, in that he often suffers Amusing Injuries, has the Big Eater trait, and has goofy ideas. The way he is written indicates he is to some degree aware of his wacky traits. He tends to avoid the problematic aspects of the trope.
- *Crack!* "Oh, My Back!": Throws out his back regularly.
- Good Parents: There is nothing he won't do for his daughter, and she knows it.
- The Klutz: His clumsiness is a Running Gag. He accidentally hammers his thumb in the intro. He throws his back out while trying to lift a flagpole. He trips when he tries to skate.
- Mum Looks Like a Sister: Gender-Inverted Trope, but much like his wife, he looks young enough he could be confused for Lunella's older brother instead of her father.
- Oblivious to His Own Description: James balks when he sees a painting of himself and the rest of his family, complaining that his head is not that big. Mimi pipies in and says she birthed him, so yes, he head is that big.
- Out of Focus: He gets the least amount of focus compared to the rest of his family.
- Rambling Old Man Monologue: He'll often go into long digressing stories that Lunella tends to find boring.
- Screams Like a Little Girl: He screams at a higher pitch than his wife when they learn that Lunella is Moon Girl. He keeps screaming until someone else closes his mouth for him.
Mimi Lafayette
Miriam "Mimi" Lafayette
Voiced by: Alfre Woodard
Lunella's suffer-no-fools grandmother.
- Canon Foreigner: Was created specifically for the show.
- Cool Old Lady: Is energetic, sassy, and well-liked by the rink's customers as well as a doting grandmother to Lunella. She's also the Original Moon Girl.
- Happily Married: Mimi and Pops have been married for decades and are very affectionate to one another. Their happy marriage is the foundation for the warmth and love shared in the Lafayette family.
- Hypocritical Humor: While she provides Lunella with plenty of wisdom and advice, Mimi is often shown doing the opposite of what she told Lunella to do once her granddaughter walks off-screen. For instance, she tells Lunella that if someone has anything important or useful to say, they'll tell it to her face-to-face. Once Lunella leaves, Mimi gets curious as to what people think of the Roll With It rink and is enraged by the negative comments she sees online. By the time the show cuts back to her, she's a hairs-breadth away from cussing out people online.
- Like Father, Like Son: More like "like grandmother, like granddaughter". She's close to her granddaughter Lunella and they share a similarly spunky attitude. She's also the original Moon Girl and an incredible Gadgeteer Genius like Lunella, having helped develop the portal generator that Lunella rebuilt. According to Morlak, nobody writes code like Mimi does.
- Meet Cute: Miriam met James by colliding with him in front of his then-new roller rink.
- Never Mess with Granny: If anyone can be said to be young at heart, it is Mimi. She has a little scooter that she fearlessly Drives Like Crazy, and when Moon Girl is threatened, she stands ready to fight. When some bad guys come looking for her specifically, she puts the smack down on them. Lunella actually quotes her grandmother at one point, stating that the older woman regularly says "No body comes between me and my babies!"
- Secret Secret-Keeper: She knows that Lunella is secretly Moon Girl, as she gets a knowing smile when seeing the superhero whip together an invention just like her granddaughter. She also assures Lunella that if her granddaughter needs to talk to her about anything at all, she's open to hearing about it. Mimi graduates to Secret-Keeper proper when she reveals she knows by trying to self-destruct Lunella's portal generator before Morlak can get his hands on it. She also encourages Lunella to bring the rest of their family into the loop in the trailer for Season 2.
- Team Chef: She's the cook for the roller rink, running concessions and making everything to order. She's very serious about cooking properly and can be somewhat critical when someone else does it, like James cooking at home. She also goes on a tirade when someone calls her wings overseasoned online.
- Technologically Blind Elders: Downplayed. Mimi claims to never use the internet, but she's actually reasonably capable of navigating it on her own. However, she's never thought about looking at online reviews of her rink despite being co-business owners with her husband for decades. This is subverted when Mimi is revealed to be the Original Moon Girl and is in fact an extremely proficient coder and engineer whose work was integral to the development of Morlak's portal generator. Her familiarity with computers is a bit of Foreshadowing to her former life as a scientist.
- We Used to Be Friends: Mimi (aka the Original Moon Girl) and Morlak were co-workers and close friends while working on the portal project. Their friendship fell apart when, after the lead scientist tried to take all credit for the machine, Morlak activated the device and let everyone in the room (minus himself and Mimi) get taken (and killed offscreen) by monsters. Mimi retaliated by destroying the device and all info on it, and the two didn't see each other again for decades.
Pops Lafayette
James "Pops" Lafayette Sr.
Voiced by: Gary Anthony Williams
Lunella's grandfather and a skilled craftsman.
- Canon Foreigner: Created specifically for the show.
- Cool Old Guy: Still a smooth skater for his age.
- Happily Married: to Mimi.
- Meet Cute: With Miriam. They crashed into each other while he was carrying flyers to advertise his new rink, Roll With It.
- Real Men Wear Pink: Loves dog-shows and cute, well-groomed poodles.
- Rollerblade Good: A skilled roller-skater who's won several competitions even in his old age.
- Technologically Blind Elders: Lunella had to put special controls on the TV so he'd stop messing it up. He also took the remote (actually a mind-swapping device) from her room because he thought that was the TV remote.
Lower East Side
School
Casey Calderon
Casey MarÃa Eva Duarte Goldberg Calderon
Voiced by: Libe Barer
Lunella's best friend and manager.
- Alliterative Name: Casey Calderon.
- Ambiguously Gay: Both of Casey's parents are gay, she sleeps in a rainbow sleeping bag, and at her bat mitzvah her father Isaac whispers to her that "[Moon Girl]'s a keeper" implying he supports the two of them dating.
- Because You Were Nice to Me: She initially dismisses Lunella at school due to their having different interests (Lunella being the school genius while Casey is an up-and-coming reporter/blogger). However, once Lunella and Devil save her life, she becomes their Secret-Keeper, PR manager, and Lunella's best human friend.
- Canon Foreigner: Created specifically for the show.
- Genki Girl: She has the upbeat attitude typical of influencers opening their videos by hyping their audience. When she goes super chatty questioning Lunella's situation in the first episode, she admits that people call her "a bit much".
- Gratuitous Foreign Language: Peppers Spanish and Yiddish into her speech due to her Puerto Rican and Jewish heritage.
- Hidden Depths: While she admits to not being as smart as Lunella, she has skills of her own that save the day on numerous occasions (such as the fact that she was able to get Dr. Foster's contact info using nothing but the fact that he once liked a YouTube video). She's also capable of doing chemistry when Lunella's giving her tips (recreating a very hard-to-make chemical that Lunella had just invented). Her skills at fashion and sewing also help her design costumes for Lunella that prove to be useful on more than one occasion.
- Intrepid Reporter: A variation in that she somewhat recklessly follows unusual events happening in the LES to scoop content for her profile.
- Named After Somebody Famous: Her middle names come from famous Argentinian first lady Eva Perón.
- Only Sane Woman: She often tries to discourage Lunella from making shortsighted and potentially dangerous decisions, although often reluctantly goes along with it anyway.
- Overly Long Name: Her full name is Casey MarÃa Eva Duarte Goldberg Calderon.
- Phoneaholic Teenager: Is never seen without her phone.
- Secret-Keeper: Casey is the only one Lunella has shared her Moon Girl secret with.
- Shipper on Deck: Casey is clearly esctatic when she realizes how well Lunella and Marvin get along, looking on with an enormous grin on her face and encouraging these "soul nerds" to spend time together.
- The Social Expert: Casey is a skilled social media influencer who handles Moon Girl's PR and social media presence.
- Took a Level in Badass: Has stated more than once that she is not comfortable with any of the danger inherent to superheroics. Come the first season finale, watching online tutorials about staff-fighting has made her an effective combatant willing to go into the fray with Lunella.
- True Blue Femininity: Casey is a very feminine girl and most of her outfits are blue.
- Twofer Token Minority: Is stated in promotional materials to be Jewish and Puerto-Rican.
Eduardo
Eduardo
Voiced by: Michael Cimino
A class clown at Lunella's school.
- Adaptational Hairstyle Change: In the comics, Eduardo had a spiky hairstyle similar to Lisa Simpson. In the show, his hair is more flat and smoothed out.
- Age Lift: Like Lunella, Eduardo has aged up from his comic book counterpart, from 9-years-old to 13.
- Class Clown: Very much so. That doesn't mean he's dumb, though...
- Crush Filter: Has one towards Lunella when she asked him to the school dance in "Dancing With Myself."
- Did You Think I Can't Feel?: He's genuinely upset in "The Beyonder" when Lunella does their entire science fair project all by herself. Not only does this play into Eduardo's insecurities about being perceived as an idiot, but she intentionally ignored all of his ideas. This makes Lunella realize that she really had no excuse to act that way.
- Everyone Has Standards: He might make fun of Lunella but he'll still join with the rest of the LES to help Moon Girl take down Aftershock.
- Green-Eyed Monster: He's visibly jealous in "Dancing With Myself" when he sees Lunella had gone with "Marvin" instead, while he's stuck with a date who barely cares about him, and when "Marvin" is being abducted later in the episode, all Eduardo does is give a sarcastic call out of worry for him along with a semi-malicious grin as he slinks away.
- Hidden Depths: At first he seems like a stereotypical bully but it's revealed he genuinely respects Lunella's intelligence and is insecure about being perceived as an idiot.
- Loving Bully: Between his reaction to Lunella intentionally locking him out of their science fair project, a scene in "Skip This Ad...olescence" where his future self is seen taking her to a school dance, and his reaction to Lunella asking him to the dance in "Dancing With Myself," it's possible that his constant trolling and ribbing towards Lunella is a way of covering up his own attraction towards her.
- Nerds Are Sexy: It's implied that one of the main reasons he likes Lunella is because of her intelligence, as during his fantasy sequence of going to the school dance with her in "Dancing With Myself," he's shown to be amazed by a science concoction she made.
Marvin Ellis / Kid Kree
Mel-Varr / "Marvin Ellis" / Kid Kree
Voiced by: Xolo Marideuna
Click here to see his human disguise
A Kree warrior who flunked out of his combat academy three times. He has been dispatched to Earth to capture a superhero in the name of the Kree Empire on behalf of his father, General Pad-Varr. He goes undercover as "Marvin Ellis" at Lunella's school in hopes of tracking down and securing Moon Girl.
- Actor Allusion: It might not be a coincidence that this is the second blue-colored superbeing that Xolo Mariduena has played.
- Adaptation Relationship Overhaul: In the comics, Marvin's crush on Lunella is entirely one-sided and she can barely stand him in return. In this show, Marvin and Lunella become fast friends as fellow nerds and the interest is mutual to the point that Lunella invites Marvin to a school dance.
- Appropriated Appellation: While fighting Moon Girl, Marvin introduces himself as Mel-Varr, a mighty warrior of the Kree Empire. Moon Girl gives him the name "Kid Kree" for short, which Marvin takes as his own after rebelling against his father's insistence on taking Lunella as a prisoner of the Kree Empire at the end of the episode.
- Badass Adorable: He's goofy, nerdy, somewhat clumsy, and a sweet kid who wants to do right by the people he cares about. He's also a Kree warrior whose tech is as good, if not better than, Lunella's. He sends her packing repeatedly and has fought off demons just to get a box of pizza.
- Bad "Bad Acting": His attempts to come across as a normal Earthling leave much to be desired at times. He doesn't understand what a handshake is and waves his hands around erratically when Lunella extends one to him. He also eats a chicken leg bone first and laughs extremely awkwardly.Marvin: [awkwardly and forced] AHAHAHAHA! This is laughing right? Why are we doing it?
- Birds of a Feather: After an initially rocky first meeting, Marvin and Lunella bond over their shared love of math and science and their mutual distaste for gym class. Lampshaded by Casey, who encourages Marvin and Lunella to hang out while congratulating them on finding their "soul nerd".
- Failed Attempt at Drama: Most of his attempts to come off as menacing tend to end up this way. His debut as Mel-Varr has his voice cracking while he introduces himself, he starts to Squee when Moon Girl compliments his technology and has to hold himself back from doing so, and when he tries to Stab the Salad during a staredown with Lunella at dinner, he misses the carrot.
- Heel–Face Turn: After impressing his father, Marvin is released from his mission to capture a superhero. He becomes an ally of Lunella's from then on.
- Human Aliens: The only thing making him distinguishable from a human is his naturally blue skin, which he hides by drinking a serum of his own design that temporarily gives him a human skin tone.
- Inopportune Voice Cracking: Marvin's voice cracks part way through introducing himself to Moon Girl, undercutting his attempt at a threatening entrance.
- Jock Dad, Nerd Son: Marvin is a nerdy engineer and inventor, shaming his tall, buff, and militaristic father Pad-Varr. Pad-Varr is even more ashamed of his son's failure to graduate from Kree military school and sends him to Earth to capture a superhero to prove himself as a warrior.
- Klingon Scientists Get No Respect: Mel-Varr is a brilliant scientist and engineer whose inventions rival or even surpass some of Lunella's gear. However, his nerdy inclinations earn him little respect among the Kree, who belittle and bully him for not being a vicious warrior. Subverted at the end of his debut episode, as Pad-Varr finds Marvin's tech "astounding" and an asset to the Kree Empire after Marvin and Moon Girl defeat him using their new invention.
- Loves My Alter Ego: Both ways. Lunella and Marvin are Birds of a Feather who quickly bond over their love of the sciences. But their alter egos are at each other's throats because Marvin needs to capture a superhero to prove himself a worthy Kree warrior. After Lunella learns Marvin's identity, she begins to wonder if their friendship was all a lie, but he admits that he had no idea she was Moon Girl and truly enjoyed their time together.
- Punch-Clock Villain: His antagonistic role in his debut episode is entirely because of Kree traditions. He has no animosity for Moon Girl and genuinely loves hanging out with Lunella.
- Strange-Syntax Speaker: Due to being an undercover Kree on Earth, Marvin's understanding of English is imperfect. He throws a magazine at Lunella and shouts, "Be thinking fast!" while trying to test her reflexes and see if she's Moon Girl.
- Secret-Keeper: After Lunella exposes him as Kid Kree, he learns her Secret Identity in turn. After abandoning his mission to capture her, he keeps her secret safe.
- Super-Persistent Missile: One of his inventions is a wrist-mounted Ray Gun that shoots a beam of energy capable of homing in on its target nearly endlessly. The only way to stop it is to make it hit something between it and its target, such as one of Moon Girl's bubbles or a fire hydrant.
- "Well Done, Son" Guy: He clearly adores his father Pad-Varr despite their differences. Marvin's reports to him usually end with him quickly blurting that he loves and misses him while Pad-Varr hangs up the call with a clear look of disinterest. This leaves Marvin dejected and determined to to capture Moon Girl and earn his father's respect. When Pad-Varr finally gives him that respect at the end of "Kid Kree", Marvin is nearly brought to tears from sheer joy.
- With Catlike Tread: He tries to stealthily take samples from his surroundings in his debut episode. Emphasis on "tries", because he's very clearly in plain sight and tries hiding behind things too small to conceal him. The only reason no one finds anything unusual is because they have No Peripheral Vision and are too busy paying attention to their phones.
The Volleyball Team
Brooklyn, Tai, Fawzia, and Geri
Voiced by: Indya Moore (Brooklyn), Ian Alexander (Tai), May Calamawy (Fawzia), and Tajinae Turner (Geri)
The school volleyball team.
- Annoying Younger Sibling: Brooklyn has an annoying little brother. The two frequently argue.
- Collector of the Strange: Tai likes to collect creepy circus memorabilia
- Friend to All Living Things: Geri builds animal shelters..
- Nice Kids: The volleyball team is nothing but welcoming to Casey and Lunella (especially when they notice that the latter is nervous). They also help her open up, show that they really do think that her high intelligence is cool, and reveal their own diverse interests (i.e. animals, race cars, collecting creepy clowns...)
- Queer Establishing Moment: Tai is said to use they/them pronouns in conversation with LOS-307. At the school dance, Fawzia brings another girl as her date.
- Twofer Token Minority: Technically the group is quite diverse, but Tai is confirmed in-universe to be non-binary and is Asian-American. Brooklyn is Latina and transgender, evidenced by a trans flag on her water bottle. Both are voiced by trans actors.
The STEM Kids
Anand, Eli, Cecilla, and Jurnee
Voiced by: Utkarsh Ambudkar (Anand), Gerald Waters (Eli), Isabella Gómez (Cecilla), and Myha'la Herrold (Jurnee)
A particular group of kids that Lunella befriends in the school's STEM club.
- Academic Alpha Bitch: Anand tends to frequently play up his own intelligence.
- Genre Savvy: Cecilla has a huge love for heist movies, which is crucial for when the STEM Kids have to plan one out to retrieve the Crystal of Karwar from the museum.
- Queer Establishing Moment: A quick shot in "Dancing With Myself" shows Anand asking out another boy to the school dance.
- Killer Yo-Yo: Downplayed as he doesn't use them for combat, but Eli keeps a lot of yo-yos on him, which comes in handy when he uses one to pick up the Crystal of Karwar which was hidden in an elevator ceiling.
- Playful Hacker: Jurnee has a good lot of experience with computers, which helps out when she has to hack into the museum's surveillance cameras.
- The Rival: Anand is pretty good at math and science himself, though nowhere near Lunella's level. Not that he'd let anyone else know that.
- Scary Shiny Glasses: Much like Lunella, Cecilia develops these when she gets intense.
Coach Hrbek
Coach Hrbek
Voiced by: Fred Tatasciore
A coach and substitute science teacher
- Dumb Jock: He's reluctantly teaching Lunella's science class until they can find a proper science teacher. He's way out of his depth.
- Friend to All Children: His kind, encouraging approach allows his robotics team to defeat the Villain of the Week after Lunella's more competent but abusive Wakandan robotics instructor causes her to have a mental breakdown.
- Self-Deprecation: He's wholly aware that he's not fit to be teaching the science class and admits as much. His reaction to learning that Ms. Dillon is Aftershock is disappointment that the kids will be stuck with him again.
Principal Nelson
Principal Nelson
Voiced by: Craig Robinson
The principal of Lunella's school
- Ink-Suit Actor: He pretty much bears the image of Craig Robinson in animated format.
- Putting the "Pal" in Principal: Attempts to be a positive figure for the students.
Angel
Angel
The pet hamster in Lunella's class.
- Amplified Animal Aptitude: Angel is a normal hamster, yet he's smart enough to understand what Lunella's saying, communicate with other animals, and knows to go get Devil when Moon Girl's in danger.
- Cuteness Proximity: The girls love Angel, and dote on him whenever they're on screen with him.
- Fire-Forged Friends: He and Devil don't start out on the best of terms, due to Devil being jealous of Angel getting all of Lunella and Casey's attention and Angel initially seeing Devil as a terrifying predator. However, after Devil swallows his envy to go looking for Angel when he realizes how upset Angel's disappearance would make Lunella and Angel sees a remorseful Devil crying in the park, the two of them set aside their differences, save Lunella, and Angel is even included in the movie night later.
- Foil: Along with their having opposite names (Angel and Devil), Angel is a tiny, adorable hamster who runs from anything scary and is mostly defenseless. Devil is a tall, terrifying dinosaur who is considered to be very brave and is the muscle of his and Moon Girl's team. The two eventually bond over the fact that they both care about Lunella.
- Jaw Drop: What the hamster does whenever he sees Devil.
- Meaningful Name: His name, though pronounced as the Spanish name "ahn-hel", is spelled the same as angel, which not only shows off his sweet and adorably innocent nature, but sets him up as a rival for Devil.
The Neighborhood
Jimmy
Jimmy
Voiced by: Keith Ferguson
The owner of a local gym.
- Badass Bystander: He's a big, strong guy and stands up to Aftershock, though it doesn't really go well.
- Lovable Jock: Donates several boxing gloves to Lunella's Moon Girl costume.
- Top-Heavy Guy: Very toned upper body but average sized legs. Lampshaded by Casey when directing the LES to lift a flag pole with their legs, accusing him of skipping Leg Day.
Ahmed
Bubbe Bina
Bubbe Bina
Voiced by: Carol Kane
The owner of Bubbe Bina's Knish Niche.
- Ambiguously Jewish: Owns a restaurant that sells traditional Jewish food, speaks Yiddish, and has background characters dressed in traditional Jewish clothing outside her shop.
- The Ghost: Mentioned several times in Episode 1 but never actually appears (except for a female background character near the shop who might be her). Is finally introduced in season 2.
- Supreme Chef: Lunella loves her knish.
- Tongue Twister: Her store's name. As Lunella says "The Lower East Side without Bubbe Bina's Knish Niche? But their knishes were knishalicious!"
- Yiddish as a Second Language: Lunella has picked up some Yiddish from her.
Diego Peña
Council President Diego Peña
Voiced by: Luis Guzman
President of the LES Borough Council.
- First-Name Basis: With Adria Lafayette.
- Ink-Suit Actor: The animation depicts him as a dead ringer for his actor, Luis Guzman.
- Mayor Pain: Downplayed. He works with the Muzzlers and is reluctant to turn against them due to all the money they donated. However, he eventually turns against them.
The Goldberg-Calderons
The Goldberg-Calderons
Voiced by: Andy Cohen and Wilson Cruz
Casey's fathers.
- Family of Choice: In the episode "Today I Am A Woman", they tell the story of their wedding to Lunella and Casey. They state that they were happy to be there with their chosen family, knowing that as long as they had each other, they had everything.
- The Voiceless: Until Episode 12, both have only made non-speaking appearances.
- Twofer Token Minority: They're a gay couple. One is Jewish and the other Puerto Rican.
Villains
Ms. Dillon/Aftershock
Ms. Dillon / Aftershock
Voiced by: Alison Brie
- Adaptational Early Appearance: Aftershock was introduced under the Marvel Comics 2 titles, which is set in a possible future of the main comics universe. This show takes place in the present.
- Age Lift: In the comics, Aftershock was introduced some unspecified decades in the future as depicted by Marvel Comics 2, a contemporary of the teenaged Spider-Girl. Here, she's a full grown adult.
- Ambiguous Situation: In the comics Aftershock was the daughter of Electro. Though she retains his last name, and the mention of The Avengers does imply that Spider-Man may exist in this universe, later confirmed when Devil mentions him in a montage, it's unclear if she's related to Max Dillon here or if she's a Composite Character with him.
- Deadpan Snarker: Is often making snide remarks during battle.
- Death by Secret Identity: In her first confrontation with Moon Girl she quickly catches Lunella and unmasks her. The next day, both discover that she's the new science teacher working at her school, and she threatens to go after Lunella's family if not left alone. Lunella does so anyway, and the lightning rod that was rigged up to defeat her sucks her energized form into the power grid, leaving her fate unknown.
- Drunk on the Dark Side: Draining electricity is invigorating for her, something she likens to getting her morning coffee rush.
- Evil Is Petty: On top of threatening Lunella's family, she also flunks her out of the science class she's teaching.
- Faux Affably Evil: She intimidates Lunella by threatening to hurt her family if she tries to stop her again, then switches to cheerfully reminding her to "read chapter five by tomorrow, 'kay?"
- Hartman Hips: Has noticeably wide hips. These are mostly to add to her maturity and attractiveness.
- The Hedonist: Ultimately, her goals amount to draining power from the Lower East Side so she can indulge in the rush of using her abilities while maintaining the conveniences of civilian life. She has zero regard for the people whose homes and businesses she's disrupting, threatening to kill anyone who tries to stop her with a smile.
- Hot Teacher: Takes the role of, in her own words, "a disarmingly attractive teacher" to keep tabs on Lunella and keep access to an electrical port nearby.
- Mythology Gag: Her appearance when her powers are active makes her resemble a Distaff Counterpart of Electro's Ultimate Spider-Man and The Amazing Spider-Man 2 designs. Her original comics counterpart in Marvel Comics 2 is Electro's daughter, who also wore a female version of her father's costume.
- Politically Incorrect Villain: She's a blonde white woman who actively targets the Lower East Side because the authorities don't bother to help working class people of color suffering from blackouts in their neighborhood.
- Psycho Electro: She has no qualms about killing a kid or innocent people, and she'll do it with a smile.
- Rogues' Gallery Transplant: Was originally created as an opponent for Spider-Girl in the comics.
- Shock and Awe: Has electrical-based powers she charges by draining energy from the LES.
- Smug Snake: She's very cocky that Moon Girl isn't enough to stop her.
- Too Powerful to Live: She's easily one of the most powerful and dangerous villains Moon-Girl has ever encountered, and she was just a Starter Villain! There really was no choice but to have her disappear forever at the end of her only appearance.
- Uncertain Doom: What exactly happened to Aftershock after she was sucked into the LES's power grid is unknown.
- Would Hurt a Child: Double Subverted when she sees Lunella without her helmet.Aftershock: Oh, I could never hurt a child… but I should at least try!
- You Don't Look Like You: In the comics, Aftershock wore a more revealing, feminized version of Electro's classic costume. Here, she's completely redesigned so she can be her own supervillain. Though she does bare a heavy resemblance to Electro's Ultimate Marvel design when her powers are on.
The Cold-Cut Bandits
The Cold-Cut Bandits
Voiced by: Roger Craig Smith (Talking Burglar), None (Silent Burglar)
A pair of ordinary burglars who took advantage of the LES's power outages to rob the area.- Affably Evil: They're crooks but they do give Lunella the advice to get a superhero name so that people will take her seriously.
- The Quiet One: As Casey lampshades, only one of the two talk - the other never says anything.
- Starter Villain: Share this distinction with Aftershock, being the first villains Lunella ever beats.
Devos the Devastator
Devos the Devatator
Voiced by: Fred Tatasciore
A robotic supervillain.
- Third-Person Person: Refers to this way.
- Rogues' Gallery Transplant: Is typically a foe for the Fantastic Four.
Angelo/Syphonator
Angelo / Syphonator
Voiced by: Josh Keaton
An alien symbiote bonded to a human boy. Takes great pleasure in trolling Lunella.
- Ascended Extra: Played with. Angelo's name and Symbiote affiliation is based on the "Spider-Man" comic book character Angelo Fortunato, who debuted and died in the span of three 2006 issues of "Marvel Knights: Spider-Man". That Angelo was a temporary host to the Venom Symbiote, between Eddie Brock and Mac Gargan. Considered an unambitious loser, the young adult Angelo lucked into bonding with Venom and decided to turn things around and make a name for himself by taking out Spider-Man. He fails, even taking out a costumed civilian, instead, only to run afoul of the actual Spider-Man, get beat, and then flee. The Venom Symbiote abandons him not long after in the midst of Angelo jumping between buildings. However, this version of Angelo, who while similarly down on his luck as an activist, is a 13-year-old kid who grows envious of Moon Girl's community accomplishments that he simply cannot live up to, all without being characterized or treated as a Straw Loser. So while both Angelo incarnations hold undue enmity towards a hero, this show's version is considerably more understandable, even if still not justified. And beyond that, his Symbiote form, called Syphonator, was created whole-cloth for the show, not even resembling most other versions of Symbiotes across different media.
- Casting Gag: He's a Symbiote voiced by Josh Keaton, who previously voiced Peter Parker in The Spectacular Spider-Man.
- The Corrupter: Like almost all post 90's Spider-Man Symbiotes, Syphonator is drawn to, magnifies and feeds on negative emotion. Both from his host and the people he antagonizes.
- Expy: As Syphonator, he bears a strong resemblance to the X-Men villain Mojo.
- Fat Bastard: As Syphonator, he looks very much like an obese Basement-Dweller.
- Multi-Armed Multitasking: Syphonator has four arms, one pair he uses to hold his phone and constantly update his online status with troll posts, the others he uses to fight. This is along with his prehensile tentacle legs.
- My God, What Have I Done?: Angelo is ashamed when he realizes that the things he tweeted really hurt Moon Girl's feelings.
- Rogues' Gallery Transplant: Of Angelo Fortunato's brief time as the Venom Symbiote. Played with in this case, as while Symbiotes are typically Spider-Man villains, this version of Angelo's Symbiote form is a Canon Foreigner created for the show.
- Sheathe Your Sword: Lunella figures out that the only way to defeat Syphonator is to starve him of the negative emotions he's feeding off of, either reinterpreting his barbs to be more positive or simply ignoring them, which eventually leaves Syphonator powerless and forces him to retreat.
- Troll: Trolls Lunella on her social media and becomes more powerful the more riled up he makes her. Lunella even finds him hiding out under the Williamsburg Bridge.
- Weaksauce Weakness: Moon Girl initially tries the use of sonic attacks to deal with Syphonator, referencing a classic weakness most other Symbiotes have, but it ends up not working. It turns out that the simplest way to beat him is to simply ignore him or to take his taunts as flattery, depriving him of the negative emotions that power him up.
- Xtreme Kool Letterz: Because he's online and a troll, he spells his name in all caps with numbers: SYPH0N8R.
- You Don't Look Like You: Beyond being living goo, Syphonator doesn't look like other depictions of the Symbiote race, having small eyes, flat teeth, and bushy eyebrows. Heck, he looks more like a classic depiction of a troll than a Symbiote.
Sophie Slugfoot/Instantanegirl
Sophie Slugfoot / Instantanegirl
Voiced by: Carlee Baker
An Olympic-hopeful sprinter who was banned from the games for using a chemical compound to enhance her muscles.
- Ambitious, but Lazy: Besides trying to use a Fantastic Steroid to get ahead into the Olympics, she flat out admits that her attempt to take out Moon Girl is a shortcut to being a big name supervillain.
- Atrocious Alias: Lunella and Casey don't think much of her supervillain name. They suggest "Speedy Girl" as an alternative, much to Slugfoot's annoyance.
- Canon Foreigner: One of three show-original villains introduced in "Run the Rink".
- Cheaters Never Prosper: Used a chemical compound to enhance her leg muscles and gets banned from the Olympics for it.
- Hartman Hips: As a result of the muscle compound, she has noticeably huge thighs that run below her normal-size thin waist. Furthermore, she's the second young adult opponent that the teen Moon Girl has comes across.
- Ironic Name: Her last name is Slugfoot but she's a really fast runner.
- Logical Weakness: She has super speed, but she also has an impulsive mindset of a sprinter without Super-Reflexes. Therefore, thinking she could just bullrush into Moon Girl like running into a finish line, she never factored in her opponent *slightly dodging* to avoid her.
- The Right Hand of Doom: Her legs are disproportionately huge and muscular due to the illegal Super Serum she used.
- Super-Speed: So fast she can't control it and she runs into a wall.
Timmy Grubbs/Manbaby
Timmy Grubbs / Manbaby
Voiced by: Aaron Drown
An infant that was grown to massive size after wandering into his father's bio-lab and getting blasted with growth rays.
- Attack of the 50-Foot Whatever: He's a baby big enough to wrestle with Devil Dinosaur.
- Canon Foreigner: One of three show-original villains introduced in "Run the Rink".
- Kids Love Dinosaurs: He came to the rink because he wants Devil all to himself.
- Enfant Terrible: A giant baby treated by the show as a supervillain.
- Non-Malicious Monster: His sole threat is that he still acts like a baby but is unaware of the harm he's causing due to his size. He comes to the roller rink because he wants Devil Dinosaur for himself, like any greedy baby.
Gravitas
Gravitas
Voiced by: Ace Gibson
A supervillain with a gravity-defying compound.
- Canon Foreigner: One of three show-original villains introduced in "Run the Rink".
- Emerald Power: His gravity goop is neon green.
- Expy: He's similar to the comic villain Gravaton, though Graviton has actual superpowers while Gravitas uses a weaponized chemical compound.
- Gravity Master: Can shoot a compound from his gloves to make things levitate. He's able to incapacitate Devil by having him float helplessly in the air. Gravitas then threatens to send the Roll With It Rink to the moon along with everyone in it.
- Power Floats: He arrives at Lunella's family roller rink by floating in thanks to his anti-gravity compound.
- Revenge: After Lunella and Devil accidentally ruin his getaway from a bank heist on their way to the car wash, he shows up at Moon Girl Night at the rink for payback.
- Unknown Rival: He doesn't take it well when he finds out that Moon Girl and Devil Dinosaur thwarted his bank robbery completely by accident.
- Unskilled, but Strong: Gravitas' gravity fluid makes him a formidable opponent, as he can make anyone float helplessly in the air if he tags them once. But once he runs out of juice, Moon Girl is able to beat the snot out of him because of how reliant he is on his gear.
LOS— 307
LOS-307
Voiced by: Asia Kate Dillon
A sentient supercomputer with a longing for a human connection.
- A.I. Is a Crapshoot: Actually, they aren't that bad… until they overheat playing against Lunella in chess while recharging.
- Anti-Villain: They're actually not malicious and legitimately just want a friend to spend time with. They just temporarily went insane due to Lunella accidentally overheating their systems.
- Benevolent A.I.: Very amicable and desperate for the longstanding connection of friendship. They end up becoming the school's new guidance counselor.
- Expy: They are basically a modernized version of the IBM Deep Blue chess-playing expert system.
- I Just Want to Have Friends: Despite being a computer, they are sentient and long for friendship.
- Magical Computer: They have the usual ability of hacking anything electronic and doing impossible things with them, like having a fridge chase down Moon Girl. They make a giant robot out of the school's electronics at the climax of their debut episode.
- Non-Human Non-Binary: They introduce themself as a non-binary operating system, which doubly refers to their gender identity and how they compute information.
- Robosexual: During their second appearance, LOS has a photo on their desk showing them with a woman and child in a pose suggesting that they're a couple plus kid.
- Sanity Slippage: If they run a chess game while recharging, they will overheat and become malevolent.
- Secret-Keeper: They deduced Moon Girl's true identity. They threatened to reveal to everyone if she doesn't finish their game but probably decided not to upon being brought back to their senses.
Mane
Mane
Voiced by: Jennifer Hudson
A being made of Lunella's own hair.
- Create Your Own Villain: Lunella's own straightening compound is what caused her to fall out and come to life.
- Logical Weakness: Because Lunella's compound is essentially a relaxer, Mane's weakness is a neutralizer, which turns her back into non-prehensile curly hair.
- Mirror Match: She can shapeshift into Mane Girl, a form that matches Moon Girl in shape and fighting style.
- Prehensile Hair: She is this, being a sentient and ambulatory mass of hair.
Rocking Rudy
Rocking Rudy
Voiced by: Gary Anthony Williams
A rock and roll villain with a cool car.
- Badass Normal: Lunella complains that his only power is that he has a car, and yet he's the only villain she's never been able to catch. He's also acrobatic enough to make a getaway while riding atop a large vase and chucking other vases at Moon Girl.
- Canon Foreigner: He was made up for this show.
- Character Catchphrase: Usually sings "Rocking Rudy is rollin' out!", whenever he gets away with whatever he stole.
- Cool Car: Has a slick, gold getaway car.
- Invincible Villain: He's able to make a successful getaway in all three of his appearances on the show so far, being the one villain to have a perfect winning streak against the titular heroes. Showrunner and executive producer Steve Loter posted on an AMA that he'd NEVER be captured.
- Karma Houdini: A Running Gag is that the heroes never catch him even though he's just an ordinary guy with a working car.
- Rotten Rock & Roll: A smug rock and roll-themed villain who sings condescending remarks at Moon Girl while he makes his escape.
- Rule of Funny: The basic idea behind why Rocking Rudy has never been captured and, as mentioned above, apparently never will be captured. The idea of a surprisingly acrobatic but nevertheless normal unpowered human who lacks any tech outside of his regular working car yet is able to get away with his villainy via access to said car is loads funnier if he never gets caught ever.
Linh Pham/Stiletto
Linh Pham/Stiletto
Voiced by: Kari Wahlgren
A shopaholic turned thief with extendable legs.
- Armed Legs: Her main weapon is a pair of high-heeled boots with the ability to extend like stilts.
- Combat Stilettos: Her main weapons are extendable mechanical legs with high-heeled shoes.
- Cut Lex Luthor a Check: Built extendable legs to steal money when she could have sold the design to buy her shoes.
- Expy: She is just like Lady Stilt-Man but it's unconfirmed if she's meant to be an adaptation or an entirely new character.
- Extendable Arms: She built extendable legs to help her with her crimes.
- Ms. Red Ink: She was a shopaholic with a love for high-heeled shoes. She resorted to stealing after she ran out of money.
The Beyonder
The Beyonder
Voiced by: Laurence Fishburne
An impish, mercurial interdimensional cosmic entity sent to Earth to study human beings.
- Adaptational Ugliness: Most versions of him have him assume the form of a Human Alien, and his classic appearance in the comics is as a boyishly handsome young man whose otherworldliness is only indicated by his peculiar dress sense. The spindly, demonic-looking take on him in this show is a major departure.
- Always a Bigger Fish: Just like in Jonathan Hickman's run of The Avengers, he does have superiors. They're the ones who sent him to Earth to begin with. Molecule Man is also powerful enough to temporarily damp Beyonder's powers with a special wand, which suggests that there are other beings out there whose powers eclipse or dwarf his own...and that, with the right tools, he can be weakened
or even killed. - Amazing Technicolor Population: Has blue hair and orange skin in this incarnation.
- Anti-Villain: Though a reality-warping trickster, The Beyonder isn't really evil. He acts more like some serious Troll than actively malicious. While his antics are usually framed as "teach me something", they always end up giving Lunella valuable lessons that help her be a better hero.
- Badass Fingersnap: Some of The Beyonder's reality-warping actions are triggered by the snap of his fingers. In the episode "The Beyonder", Moon Girl temporarily puts a bubble around his hand while he attempted to do this.
- Be Careful What You Wish For: The Beyonders mission is to learn more about humans, and when he's depowered by Molecule Man, he's given the same weaknesses as a human, like sweating and blisters on his feet.
- Beware the Silly Ones: Theatrics and flamboyance aside, he's still an all-powerful, all-knowing being from a world beyond our perceptions of time and space that was sent to Earth to judge humanity and deem them worthy of existence.
- Big Red Devil: He may be an alien operating off Blue-and-Orange Morality, but his design is clearly inspired by this trope. He's got the height, the colour scheme, the goatee, and the strangely monstrous limbs. Like the other character resembling a Big Red Devil in this show, though, he's not nearly as unpleasant as he seems.
- Blue-and-Orange Morality: The mental processes of a being from beyond time and space aren't going to be really comprehensible to finite mortal minds. The ethics of deciding whether a species or planet deserves to exist is one example of this, since he otherwise seems to be moral. Incidentally enough, he actually has blue-and-orange coloring.
- Breaking the Fourth Wall: He turns out to be the narrator of the backstories of the various villains who appear. He shows up personally in later episodes, often pausing the episode and directly talking to the audience about the antagonist's backstory.
- Cheated Angle: His pompadour often switches which side it is on depending on where the Beyonder is facing, although generally leans toward the right when facing the camera.
- Color Contrast: His color scheme is orange skin with blue lips and hair, while his clothing is stark white with black accents.
- Deadpan Snarker: The Beyonder just loves messing with people, often making witty comments or sassy remarks. His transformations in the first episode are mostly just to annoy Lunella.
- Even Evil Has Standards: He may be a reality warper, but even he is disgusted at Odessa for stealing the gear of superheroes, advising the viewers to unfollow her.
- The Gadfly: He enjoys using his powers to get a rise out of Lunella. His first in-person interaction with her has him tricking her into thinking that her family had discovered her superhero identity. Near the end of his debut episode, he appears to erase humanity from existence—before revealing that he was just messing with Lunella and setting everything back to normal.Beyonder: [laughing after freaking Lunella out] Oooooooh, man! I had you GOIN'! You looked so SCARED!
- Great Gazoo: He's much hammier and more playful than other depictions of the Beyonder, boasting that he has "infinite powers to flaunt" and generally being a nuisance to Lunella. He's comparable to Q in a lot of ways, especially with his Humanity on Trial schtick.
- Humans Through Alien Eyes: Beyonder's motive in the series is that he has been sent to study humanity - their activities and nature - to determine if they are worthy of continued existence. He chooses Lunella for this purpose, having her explain human relationships and things like eating. His self-titled song contains questions he has about humanity, like his confusion towards the point of birthdays.
- Insufferable Genius: He's The Omniscient with "infinite powers to flaunt" and the ego to match. Between his personal Villain Song and his constant pestering of Lunella, he's as irritating as he is intelligent.
- Invincible Villain: Thanks to his vast powers as a Reality Warper, there's nothing Lunella can really do to stop him if he wants to do something. He spends the entirety of their "fight" messing with her before shrinking Devil down into a helpless chibi form and wrapping Lunella in scrap metal to prevent her from so much as throwing a punch. It's made blatantly clear that he could instantly wipe out Earth and all life on it with a thought if he felt like it, but it turns out that he was just trying to get a rise out of her. The only way to "beat" him is to give him the type of information he wants and entertain him long enough for him to be satisfied for the time being and leave.
- Just Toying with Them: When Lunella tries physically confronting him to stop him from erasing humanity, this is about the only possible response he can give.
- Knight of Cerebus: A mild case, given his humorous personality, but he's the first threat Lunella and Devil end up facing with much higher stakes than just protecting Lower East Side, threatening to wipe out Earth and its populace unless she proves they're worthy of continued existence. His second appearance as an antagonist is largely humorous up until the second half, which forces Lunella to conquer her fears to save Mimi, and ends with him hinting at the events of the finale of the season, which features major repercussions for the series going forward.
- Large Ham: He's fond of using his powers for big and dramatic musical numbers and gets annoyed when Lunella interrupts them.
- Lazy Bum: Not very jazzed about being assigned to assess Earth, and despite his incredible cosmic abilities, the Beyonder opts to just judge humanity through Luna's actions since that's easier than doing so with everyone on the planet.
- Medium Awareness: As part of his constant Breaking the Fourth Wall, the Beyonder can freely manipulate aspects of the show. He can put it on rewind, repeat, stop it, or fast-forward it at will. He can appear inside speech bubbles, move panels around, and high-five himself by extending his arm off-screen.
- Mr. Exposition: He was revealed in episode six to be the man narrating the backstories of the Villain of the Week in prior episodes. He continues to do this after the reveal.
- Mayfly–December Friendship: As much as he annoys Lunella, the two gradually become friends the more they interact.
- Narrator All Along: Episode 6 reveals him to be the "Backstory Guy" narrating the backstories of the villains since episode 2, and all backstories that he gives from that point on have him appearing physically. Unfortunately, after his and Lunella's friendship deteriorated in the sixth episode of Season 2, he would no longer show up to narrate any backstories.
- No-Sell: If the Beyonder is being remotely serious, there's absolutely nothing Lunella can do to hurt him. He can turn himself intangible to solid matter and converts Lunella's boxing gloves into showers of confetti for himself with barely a hand gesture.
- Non-Standard Character Design: He's unique among the cast as he has no rounded lines in his design save for his facial hair. Every other part of him, even his hair and makeup, is distinctly angular. His fingers are abnormally long and his feet end in points. All of these serve to underscore how otherworldly he is as a being from beyond time and space.
- Obliviously Evil: The Beyonder rarely sees anything wrong with what he does, either saying it's to amuse himself or to learn more about humanity. He didn't even think about how dangerous playing a game of golf with planets could be until he was confronted by the victims of a world destroyed by his game.
- The Omniscient: Boasts to be as all-knowing as he is all-powerful. He's able to narrate events before they happen, as he does in his introductory episode. He also warns Mimi that her "greatest fear" is about to come true and that it's coming for her. But while he understands "what" is happening and "how" it's happening, he doesn't always understand the "why". This is why he ropes Lunella into telling him all about humanity, as he can't grasp why humans think things like "birthdays" are important or why they make distinctions between a "shirt" and a "blouse".
- Painting the Medium: His reality warping sometimes takes the form of messing with the series' animation, at one point coming into the foreground while pushing a previous instance of himself out of the background.
- Perception Filter: He can choose to be visible to whoever he wants. Usually Lunella, Devil and Casey. In "Coney Island, Baby!" he also reveals himself to Mimi.
- Reality Warper: As shown in his debut episode, he can change reality as he sees fit, such as giving Devil large, muscular arms or having Casey be followed on social media by Selena Gomez. When he starts to get even a little serious, he can levitate the entire Lower East Side into a void, rip the color out of the environment, manipulate gravity, phase through attacks like static, and much, much more.
- Secret-Keeper: As an all-knowing being, he of course already knew Lunella was Moon Girl and Mimi was the original Moon Girl.
- Shapeshifter Guilt Trip: He introduces himself to Lunella by trolling her with the notion of her superhero identity being discovered in her lair by each member of her family, in succession, then he assumes his true form.
- Unwitting Instigator of Doom: Turns out in the past, in a reckless game of planetary golf, he ended up destroying Molecule Man's world and all of the work he built over a lifetime. This incident would end up not only biting the Beyonder in the butt but also leave Lunella with one of the most dangerous threats she's faced yet.
- Villain Song: His self-titled song
shows off him explaining his backstory in musical form, including how he came to Earth to put Humanity on Trial.
Garko the Man-Frog
Garko the Man-Frog
Voiced by: Gary Anthony Williams
A frog-based supervillain Lunella fights in "Skip This Ad...olescense".
- Adaptational Modesty: Garko wore no clothing in the comics. In this series, he wears a jumpsuit.
- Bit Part Bad Guy: He only shows up for a brief scene in "Skip This Ad...olescense", robbing a pawn shop, in which he manages to get away due to Lunella ignoring his Evil Gloating
- Evil Gloating: He stops to monologue about how powerful he is, causing Moon Girl to get bored and use her Skipster invention to fast forward in time through all his speech. Unfortunately, at the end of it she realizes that Garko had revealed his weakness in his boasting, but Lunella hadn't been able to hear it. When she tries to get him to repeat himself, he thinks better of it and flees.
- Rogues' Gallery Transplant: He fought Howard the Duck in his first and only appearance in Giant Size Man-Thing, but goes up against Moon Girl and Devil Dinosaur in this show.
- Small Role, Big Impact: Moon Girl skipping his speech showcases the flaws in the skipster app.
- Spared by the Adaptation: Garko died in his first and only appearance in Volume 14 of Giant Size Man-Thing, but is still alive by the end of his first appearance in this series.
Abyss
Abyss
Voiced by: Maya Hawke
A fifth-generation supervillainess who is reluctant to carry on the family business. Has the power to evaporate herself and anything around her.
- Adaptational Backstory Change: Instead of a genetically engineered creation of Sufficiently Advanced Alien Abusive Precursors, she's of human origin with a family history of supervillainy.
- Adaptational Villainy: Downplayed. In the comics she and her brother were Obliviously Evil, being ordered by their Abusive Precursors to "perfect" mankind by transforming them into superhumans with or without their consent. Eventually, they learned the error of their ways and even became members of the Avengers. Here, she's a run of the mill supervillain, though she isn't exactly happy with it and is only doing so because of family tradition.
- Adapted Out: In the comics Abyss had a light counterpart and brother named Ex Nihilo, with the two explicitly being designed as "day and night" for each other in-universe. Her more mundane backstory here means he's absent.
- Heel–Face Turn: Was never interested in being evil, but was pressured into it due to her family legacy. By the end of her debut episode, however, she finally calls her mom and tells her she wants out.
- Legacy Character: The Beyonder notes that her mother, grandmother, and great grandmother all also went by the name Abyss as part of their family business of supervillainy. That being said, she isn't exactly happy about being one.
- Rogues' Gallery Transplant: Was created by Jonathan Hickman as an antagonist for his Avengers run.
- Super Smoke: She can shoot purple smoke out of her hands that seemingly evaporates objects. In her second confrontation, she demonstrates the ability to evaporate herself to teleport at will.
Rat King
Rat King
Voiced by: Daveed Diggs
A rat like humanoid who commands an army of rats from within the sewers of New York.
- Added Alliterative Appeal: His dialogue has a alliteration. He drops it in defeat out of frustration from trying to keep it up.
- Adaptation Species Change: His comics counterpart is a humanoid Mutant, but in Moon Girl and Devil Dinosaur, he says that he's a mutated rat near the end of his debut episode.
- Affably Evil: Rat King's only goals are to steal pizza or gain revenge on the people who stop him from stealing pizza, he's generally polite, he lets Angel go, and when he finally has his Villainous Breakdown he drops the "King" persona completely and starts casually explaining to the heroes that he's "really just a mutated rat with a paper crown".
- Bait the Dog: At first seeming to be A Father to His Men and even welcoming Angel, Rat King quickly proves to care about neither— he's lied to Angel to use him as bait to lure in Moon Girl, and he sees the rats as useful minions and nothing more.
- The Chessmaster: The Rat King is prone to elaborate plans to get the pizza he wants and has a Rube Goldberg Device in his dungeon that's deliberately designed for the opponent to sidestep the slow-moving hammer so that they can end up trapped in a net above.
- Manipulative Bastard: Rat King is more than willing to lie to Angel and manipulate him if it means getting to use him as bait for Lunella.
- Pet the Dog: Despite using Angel as bait, he lets the hamster go after nothing but a couple derisive remarks— if Angel hadn't gone to save Moon Girl instead, he'd have gotten away just fine.
- Rat King: Fitting for his name, he's a humanoid rat with an army of rats at his command.
- Rogues' Gallery Transplant: He was a foe for the Xavier Institute student body in his first (and so far only) comics appearance.
- Villainous Breakdown: After he's been foiled once again, he finally ditches the "King" act and his Added Alliterative Appeal, instead taking a casual tone and rapidly trying to fast-talk the heroes, his own lack of attention leaving him tumbling down into the sewers.
- Villainous Valor: While he spends much of the episode having his minions do his fighting for him, the Rat King gets up from his seat and personally lunges toward the tape recorder even when it means opposing Devil. At episode's end, he also drags himself out of the sewers.
- Villain Song: Has a particularly rocking song explaining his kinship with the army.
- You Don't Look Like You: In the comics, he looks like a human with blue skin and hair, but here his moniker is made much more apt by making him look like (as well as being) a rat himself.
The Muzzlers
The Muzzlers
Voiced by: June Diane Raphael (Marcy Muzzler) and Paul Scheer (Marty Muzzler)
- Actor Allusion: Marty's not the first Disney character Paul Scheer has played who has a sinister agenda for the protagonist's community.
- Bitch in Sheep's Clothing: Present themselves as a lovey-dovey couple who want to improve the LES. In truth, they are less concerned about the people of the LES and more about making their ideal home.
- Hyperaffixation: All of their inventions have a "-zler" suffix.
- Perpetual Smiler: They're near constantly sporting wide grins that manage to simultaneously look smug and forced, and only drop them when Moon Girl and the LES community keep rebelling against their rule.
- Meaningful Name: Their last names are derived from a tool used to quiet animals, and their goal is to push down the LES' unique culture and replace it with bland and inoffensive substitutes.
- Plain Palate: Along with all the art and music, they also replace all the diverse cuisine of the LES with bland-looking food bar vending machines.
- Politically Incorrect Villain: They're a Caucasian middle-aged couple whose idea of improving the LES is to suppress the culture of the people who live there. When they are finally kicked out, they go ballistic and attack Moon Girl in retribution.
- Sickeningly Sweethearts: They're Happily Married, and boy do they like to let people know that.
- Unholy Matrimony: A pair of happily married evil geniuses.
- Villainous Gentrification: Their primary goal is to "clean up" neighborhoods by suppressing the local culture and make them more palatable for WASPs like themselves.
- World of Silence: Their ultimate goal, though in a more mundane way than usual. They made their wealth off noise-canceling technology and they want to gentrify the LES to remove both auditory and visual "noise", which includes its trademark culture, art, and music.
Odessa Drake
Odessa Drake
Voiced by: Anna Akana
A popular influencer who also happens to be a thief known for stealing the gear of superheroes.
- Adaptational Curves: Odessa in the comics has a slim build, while she's depicted here as a Big Beautiful Woman.
- Bad Influencer: Referred to as such by Lunella. She's a shallow cretin who only promotes Casey's bat mitzvah because she plans to steal from Moon Girl, who is also in attendance.
- Broken Pedestal: When Casey finds out Odessa is a supervillain, she loses respect for her to where her Bad Review Threat doesn't matter to her. Casey is even the one to tie Odessa down.
- Even Evil Has Standards: She might be a thief trying to steal superhero tech but even she respects the temple's rule against playing music during Shabbos.
- Race Lift: Odessa is darker skinned in the comics, but is fair skinned here.
- Rogues' Gallery Transplant: She's primarily a foe/ex-girlfriend of Black Cat in the comics.
- Politically Incorrect Villain: Downplayed. She told Casey that everyday is Christmas when you're famous and was dismissive when Casey corrected her metaphor with a more Jewish holiday. But she also respects No Music in Temple on Shabbos.
- Villain with Good Publicity: She's a popular social media influencer who secretly steals superhero gear and sells it to finance her lifestyle.
Torg
Torg the Abominable Snow King
Voiced by: Method Man
A giant ape-like monster.
- Adaptational Nice Guy: Torg wanted to take over the sea in his debut comic, Sub-Mariner #55. In Moon Girl and Devil Dinosaur, Torg is only an antagonist because everyone sees him as a destructive beast, so he decides he might as well be, and calms down once Devil shows that he's able to sympathize with him.
- Commonality Connection: Devil is able to convince him to stop his rampage when he bonds with them over their insecurities over their sizes and perception as dangerous monsters.
- Rogues' Gallery Transplant: He was a foe of Namor, but fights Moon Girl and Devil Dinosaur in the show.
- Then Let Me Be Evil: In spite of his gentle nature, Torg has always been decried as a destructive monster because of his size. Seeing himself portrayed as an antagonist monster set to lose against Droom in a movie was the last straw in him rampaging and living up to how he was perceived.
Maris Morlak (SPOILERS)
Maris Morlak
Voiced by: Wesley Snipes
The leader of the Enclave - a top-secret scientific organization - and a former colleague of Mimi, the original Moon Girl.
- Ain't Too Proud to Beg: Morlak knows when his clock is punched when he starts flying toward the portal, and pleads for Mimi to help him. Notably, this isn't played as cowardice at all and Mimi does try to save him.
- Big Bad: The real main villain of the series, the leader of the Enclave, and Lunella and Mimi's most personal foe.
- Boring, but Practical: Morlak finds Moon Girl's lair simply by narrowing down where the energy signature of the portal device likely is and tailing her when she makes her way back to her lair.
- The Chessmaster: Morlak is a planner par excellence. When he enacts his plans he manages to infiltrate Lunella's headquarters, capture both herself and Mimi along the way, and when the portal is destroyed? He makes it clear he'd planned for that eventuality anyways, and intends to capture Lunella to rebuild it.
- Dude, Where's My Respect?: He believed the portal he developed with Mimi was his shot at stardom in the science community and snapped after their work was stolen by their superiors. He now wants to recreate their old experiment just to prove that he's worthy of recognition. It notably just takes Mimi acknowledging him as someone important to her for him to recompose himself after his defeat.
- Freudian Excuse: He used to just be a humble scientist, but he snapped after his life's work was stolen by his implicitly racist superiors. Now, all he wants is to finally have his accomplishments recognized, damn the potential destruction that could follow.
- Final Boss: Morlak and his interdimensional monsters are the last foe fought in Season 1.
- I Just Want to Be Special: When he and Mimi first built the portal generator, their boss tried to steal the credit. Then Mimi destroyed the original and disappeared. Everything he's done since then is to rebuild the device and be recognized as a great scientist.
- I've Come Too Far: Mimi points out that he's not too late to change his ways. Morlak disagrees and sets the portal at maximum, reluctantly muttering that it's too late.
- Klingon Promotion: An unintentional example, but when the portal test leads to his superiors being sucked into it, Morlak claims his boss' golden ring and instantly becomes the Enclave's new leader.
- No-Nonsense Nemesis: Morlak is plenty theatrical, but he's also much more efficient. For a man who only wants to be recognized and famous, he spends surprisingly little time posturing and a lot getting the job done professionally.
- Not-So-Well-Intentioned Extremist: Morlak may seem well-intentioned, but it's a self-serving lie; he presents himself as just wanting himself and Mimi to get the recognition they deserve and to advance science, but in reality is much more interested in his own fame than anything else.
- Race Lift: His comics counterpart was white. He is black in the series.
- Ring of Power: After his old boss gets sucked into a portal, all that's left is his golden ring. Morlak putting this on is apparently all he needs for the rest of the Enclave to recognize him as the new leader. In the present he can use this ring to activate various functions like cloaking, teleporting, his hover shoes, etc. Fittingly, when HE gets sucked through the portal, the ring is all that is left of him.
- Rogues' Gallery Transplant: Marisk Morlak and the Enclave are traditionally foes of Adam Warlock and the Avengers. Here, Morlak makes an enemy of Moon Girl due to her unknowingly recreating the portal generator he tried and failed for years to rebuild and has a personal relationship with Lunella's grandmother, Mimi.
- Tragic Villain: Maris Morlak didn't start out evil, instead beginning as a humble scientist alongside Mimi. When his portal work was stolen by their thieving and implicitly racist superiors, he got his first taste of vindictiveness when he allowed the abominations on the other side of the portal to take and presumably kill them. Then Mimi destroyed the portal to prevent more lives from being lost, which Maris only took as her betraying everything they worked for, leading him to spend decades obsessing over rebuilding the portal in the hopes of getting a second shot at recognition. Deep down, Morlak isn't so much a cackling supervillain as someone who wants to be respected, even telling Mimi that all he ever wanted was to matter.
- Tyrant Takes the Helm: The Enclave doesn't exactly see any improvement once Morlak takes over.
- Uncertain Doom: The last we see of Morlak was him getting pulled into the portal he set to max. It's left up in the air if he survived or not.
- Villainous Breakdown: When Lunella and Mimi manage to defeat him despite him having successfully summoned his monsters, he loses it and activates the portal machine beyond safe standards, leading to it going haywire. He only recovers his dignity when Mimi tells him he always mattered to her, which causes him to smile momentarily.
- We Used to Be Friends: Was very close to Mimi up until he decided to turn the portal on their thieving superiors.
Molecule Man
Molecule Man
Voiced by: Edward James Olmos
The overlord of the most popular vacation planet in the multiverse...until the Beyonder accidentally destroyed it.
- Adaptational Intelligence: His comic counterpart was not the most intelligent or stable of individuals and took him a long time to figure out the full extent of his powers. This version of the Molecule Man is completely sane and fully aware of what he's capable of, creating a trap that depowered the Beyonder.
- Adaptational Wimp: Has yet to show the same level of power as his comic book counterpart, who is capable going toe to toe with the Beyonder in a fair fight, and his powers rely on his wand (something that was only a psychological limitation for his comics version). Subverted when he does eventually develop the ability to use all his powers without his wand.
- Amulet of Concentrated Awesome: His wand gives him complete control of reality, to the point that he can even block the Beyonder's powers.
- Discard and Draw: Initially he could use his wand to do whatever he wants, like transform an entire world to his liking or set up a field to nullify the Beyonder's powers. After the Beyonder broke his wand, his rage allowed him to develop the ability to transform himself like he once could do to everything else. Lunella healing him with regenerative spores grants him the ability to transform molecules around him again, but without the need for his wand.
- Heel Realization: After being defeated by Lunella in "The Molecular Level", Molecule Man realizes that in his efforts to get revenge on those who wronged him, he only ended up destroying himself in the process. Though thankfully, Lunella was willing to give him a chance to rebuild everything and even offers a piece of her self-regenerating suit to help heal him and get him back on his feet, a chance he's happy to accept as he then undoes the damage he did before leaving to fix his own world.
- Invincible Villain: Lunella stands no chance against him and he would've killed her if the Beyonder hadn't swiped his wand. Thankfully in their rematch, once Lunella gets ahold of her Moon Girl equipment, she manages to stand a much better chance against him.
- Knight of Cerebus: Whenever he appears, he makes for quite a horrific threat, as in his first episode, it's horrifically clear that he could have killed Lunella and she's left traumatized as a result of their encounter which lasts throughout the following episode. And later on, "The Molecular Level" has him setting up an even more intense threat as the life of all of Lunella's family is put on the line when he arrives at her home to make her suffer, just as she revealed to her family that she's Moon Girl.
- Revenge Before Reason: He built his world in the first place and so has enough power to rebuild it but elected to set a trap for the Beyonder and wait for him to spring it to take his revenge. The Beyonder notes when caught that he hasn't been back in eons. When that is thwarted he switches targets to destroying Lunella's life because he believes it'll hurt the Beyonder.
- Tragic Villain: His comments would suggest he was an outcast before creating a sanctuary that earned him the adoration of countless beings across the multiverse. The Beyonder destroying his work traumatized him, and made him hellbent on getting revenge, even by proxy, even if it involved killing a little girl and destroying her family. Lunella manages to talk him down after subduing him and her compassion reaches him to make amends.
- Unstoppable Rage: After the Beyonder snapped his wand, his rage at his impotency increased to the point that he gained the ability to transform his own molecules like he used to be able to do to everything else. When Lunella tries to stop him by freezing him, his rage allows him to break through.
- Would Hurt a Child: The show makes no attempt to mask the fact he was capable of and willing to kill Lunella.
- The Worf Effect: His first appearance establishes that he can negate the powers of the Beyonder, the most powerful character in the series up to that point. That said, the Beyonder does manage to help defeat him, but only through skills he learned while helping Lunella survive the world they're trapped on.
Quickwhip
Quickwhip/Zekiyah
Voiced by: Robin Thede
A whip-wielding thief who dreams of becoming a baker.
- The Atoner: Moon Girl ultimately shows leniency and helps her get a job at Bubbe Bina's.
- Chef of Iron: An aspiring pastry chef that discovered a talent for thievery and combat.
- Clothing Combat: Her weapon of choice is a whip. She can also use mundane items like apron strings in this way.
- Earn Your Happy Ending: After helping Moon Girl bring Lady Bullseye to justice, Zekiyah is able to get a new job working as a pastry chef like she's dreamed of.
- Expy: She's similar to Whiplash from the comics.
- Look Behind You: How she escapes Moon Girl multiple times.
- Remember the New Guy?: She first appears in Season 2 but flashbacks show she met Moon Girl several times before.
- Trapped in Villainy: She dreamed of being a baker but NYC was so expensive she ended up in Lady Bullseye's gang, which no one is allowed to leave. Deconstructed with the fact that, outside of Bullseye not letting her go, no one will hire someone with a criminal record, so even though she wants to she can't get legitimate work.
Lady Bullseye
Lady Bullseye
Voiced by: Miki Yamashita
The leader of a gang of thieves.
- Affably Evil: A genuinely peppy, friendly woman despite being a ruthless criminal.
- Misplaced Kindergarten Teacher: Funny for a gang leader, she leads with positive affirmations and punishes failure with time outs.
- Resignations Not Accepted: No one is allowed to quit her gang. Those that do will be hunted to the ends of the earth.
- You Have Failed Me: Downplayed. Punishes her henchmen by forcing them to stand in "reflection corners".
Other
"Moon Girl"
"Moon Girl"
The mysterious unnamed scientist that designed the portal generator that brought Devil to the present day.
- The Ghost: She disappeared long before the events of the series. We only see her as a photograph on the wall of Lunella's lab.
- Omnidisciplinary Scientist: While she's specialized in computer coding and engineering, she's clearly experienced in other fields too. Her other inventions include electromagnetic hover skates and a portal generator like the one Lunella built that brought Devil to the present day.
- Only Known by Their Nickname: Nobody knows her actual name. Lunella calls her "Moon Girl" because she disappeared during a mission to the moon. Lunella later takes the name for herself.
- The Reveal: "OMG Issue #1" reveals that Moon Girl was a nickname for Lunella's grandma Mimi.
Sam Wilson/Captain America
Sam Wilson / Captain America
Formerly the Falcon and the current Captain America.
- The Cameo: Appears in a non-speaking cameo at the end of episode 12 to deal with the Villain of the Week.
Dr. Bill Foster
Dr. Bill Foster
Voiced by: Laurence Fishburne
A noted scientist know for his work in quantum enlargement.
- Ink-Suit Actor: Has a much closer appearance to his voice actor than Beyonder. Fitting as it's the role he played in the MCU.
Agent Maria Hill
Agent Maria Hill
Voiced by: Cobie Smulders
A high ranking agent of S.H.I.E.L.D.
- Friend on the Force: Immediately vibes with Lunella during their first meeting.
- Ink-Suit Actor: Closely resembles her voice actress, which is fitting as she played the part in the MCU.
The Hot Tomatoes (Unmarked Spoilers for Season 1!)
Mimi's old friends from college, Merle and Matsuye are a pair of cutting-edge scientists who run their lab, HT Technologies out of a humble abode in the desert.
- Added Alliterative Appeal: Mimi's, Merle's, and Matsuye's names all start with the letter M, reflecting their playful personalities and friendship.
- Best Friend: Merle and Matsuye are Mimi's best friends from college and the three are delighted to see each other again after so many years.
- Better with Non-Human Company: Matsuye doesn't seem to care much for other people, but she simply dotes on Devil like he was a newborn puppy.
- Cool Old Lady: Merle and Matsuye are getting on in the years, with Matsuye complaining about an aching hip while reuniting with Mimi. But they're also brilliant scientists who are happy to upgrade Moon Girl's gear and even get in on the action themselves when a scorpion is accidentally enlarged up to the size of a car.
- Mid-Season Upgrade: Mimi, Merle, and Matsuye all work together to develop new gear for Moon Girl, ranging from frictionless electromagnetic skates to a self-repairing, flameproof costume.
- Omnidisciplinary Scientist: Merle and Matsuye's expertise covers a broad range of fields, ranging from developing new vibranium alloys, synthesizing synthetic tissue, and electromagnetic lasers that can restructure DNA. Merle mentions being mainly a soft roboticist but she also "dabbles" in mycology, the study of mushrooms. They incorporate all of their technology into Lunella's new gear to upgrade her specs past what her already impressive homemade equipment can do.
- Properly Paranoid: Merle and Matsuye weren't very enthauistic about Mimi getting a job at the Enclave, and it's implied they weren't big fans of Morlak either. Considering how dangerous the Enclave was even before Morlak took over, they had good reasons to not trust them.
- Riddle for the Ages. Lunella never does learn why they're called The Hot Tomatoes, and Mimi neatly kiboshes the reveal with a terse "And we never will".
- Walking Spoiler: It's difficult to talk about them without bringing up Mimi's past as a scientist and engineer as well as their role in upgrading Lunella's tech.
