A technology industry businessman who tries to buy Hiro's microbots.
- Accidental Misnaming: He refers to GoGo as "Gaga", and calls his assistant "Joanie" instead of Judy.
- Affably Evil: When he approaches Hiro with the offer to buy his microbot technology, Callaghan warns that he is only "guided by his own self-interest" and is known to "cut corners and ignore sound science". All statements that create the impression that despite Krei's polite and respectful demeanor, he is really a Corrupt Corporate Executive. In the context of the movie, this is subverted, because he's not actually evil, and the accident involving Callaghan's daughter during the portal experiment left Callaghan an Unreliable Expositor regarding Krei's character and motivations. However, this ends up being double subverted because the series shows that he is a Corrupt Corporate Executive, though he has a sense of decency.
- Asshole Victim: He almost becomes one, but only in the eyes of Callaghan. If one views the scenes carefully he's more of an Honor Before Reason business executive.
- Butt-Monkey: Whether he gets kidnapped by a villain or an invention of his backfires, karma always seems to get to him one way or another.
- Character Development: In the series, he's your typical arrogant CEO with questionable morals (albeit with slightly higher standards) and uses knowledge of Big Hero 6's true identities to take advantage of them. In Season 2, he comes to respect Hiro and co. and becomes a more valuable ally to them rather than just The Load.
- Corrupt Corporate Executive:
- Alistair Krei appears to be one, being more focused on profit than standards, which combined with his interest in Hiro's microbots leads the team to believe he's Yokai. He's not, and appears to be a generally decent person under it all, especially since he's genuinely worried about Hiro and Baymax going into the portal. The only evidence shown of his alleged "cutting corners" amounts to his pushing forward with his portal demo with Abigail as the test pilot, despite a slight irregularity that emerges during the countdown to launch. Krei verifies that the irregularity is still well within established parameters and Abigail goes ahead with the demo willingly. That Krei decides to continue despite a potential risk is mostly due to the presence of a very imposing general, whose approval would determine whether Krei would get the backing to move the project ahead.
- Comes up as Conversational Troping by Fred, who shows the gang various comics where corrupt businessmen are the main villains.
- In the series, he is shown to be a downplayed example of this. He overlooks potential risks, rushes products out before they've been properly tested, and blackmails the heroes into fixing his malfunctioning inventions. "Big Roommates 2" reveals that he used footage from security cameras to figure out how to make a copy of Hiro's neurotransmitter and "improve" it so his version will be different enough from Hiro's to prevent a lawsuit. He is a Mean Boss to his assistant and to his intern, whom Krei tasks with ridiculously trivial errands and berates him for doing exactly what he (Krei) said because he supposedly meant something else. On the other hand, he is not outright evil, he has some standards and a share of Pet the Dog moments.
- Didn't Think This Through: In "The Impatient Patient". After the Mad Jacks' first kidnap attempt, he had the windows of his office upgraded to be indestructible. But (as his assistant points out) he neglected to do the same for any of the other windows in the building, allowing the Mad Jacks to break through the windows in the floor below and kidnap him anyway.
- Dramatic Drop: Krei drops his champagne glass and runs when Yokai comes for him during his press conference in the movie's climax.
- Even Bad Men Love Their Mamas: Despite being prompt to "cut corners" and being a whiny jerk by moments, "Big Hero 7" shows that Krei cares about his mother, as seeing High Voltage bicker reminded him to call his mother.
- Fatal Flaw: Greed. He's so eager to make a profit as quickly as possible that he tends to cut corners, and rushes products out before they've been properly tested (which his assistant admits to the team in "Aunt Cass Goes Out").
- Finagle's Law: Things tend to go bad at the worst possible moment around him. Most notably, in the climax, Hiro's attempts to talk down Callaghan seem to be working, before Krei's frantic efforts to buy the vengeful scientist off cause him to visibly harden his resolve to take Revenge Before Reason.
- Friendless Background: In "Muira-Horror!", he reveals that when he attended camp as a kid, he preferred to venture into the wilderness instead of bonding with the other kids. He seems to have kept this trope to his adulthood, as he doesn't seem to have any friends either besides maybe Ned Ludd, his old golfing buddy.
- Has a Type: So far, the series shows him as being attracted to Aunt Cass and possibly Liv Amara, who are both charismatic women who are used to being depending on themselves to achieve success.
- Hidden Depths: "Muira-Horror!" has Krei reveal that he's an adept survivalist due to his parents sending him off to camp as a child and preferring to be out in the wilderness while there.
- Honorary Uncle: He's ready to have Hiro start calling him "Uncle Krei" if he gets married to Aunt Cass, which doesn't make it pass the cutting room floor.
- I'm a Doctor, Not a Placeholder: In "Internabout", when Noodle Burger Boy demands that he and Hiro fix him, Krei says that while he may run a tech company, his field is management, not tech. Fred also agrees with this.
- Informed Flaw: Callaghan states that he's an amoral Corrupt Corporate Executive who cuts corners. Krei has both the means and the motives to be one, which makes it easy to believe. However, the accident involving Callaghan's daughter during Krei's portal experiment has left Callaghan an Unreliable Expositor regarding Krei's character and motivations. Krei's actual actions that we are shown have not generally supported Callaghan's assessment.
- Callaghan's assessment is vindicated in "Big Roommates 2" when it's revealed Krei made a copy of Hiro's neurotransmitter and modified it so Hiro couldn't sue him.
- Ink-Suit Actor: Somehow looks like Alan Tudyk with an exaggerated nose.
- It's Probably Nothing: Reflected in Krei's decision to proceed with the portal test flight. Doubles as Disproportionate Retribution, because only a "slight irregularity" was detected and Krei himself verifies that it's still well within established parameters, yet the very second the pilot enters the portal they end up with a field breach, all communication is lost and one of the portals violently explodes.
- Jerk with a Heart of Gold: The cartoon shows that yes, he is a self-conceited Corrupt Corporate Executive, but only to some extent and he can be a Reasonable Authority Figure. His Character Development in Season 2 has him warm up to Hiro and Big Hero 6.
- Lethally Stupid: When Hiro is trying to use Not So Different to convince Yokai to give up peacefully, Krei panics and chooses that moment to try to bribe Yokai into sparing him. Needless to say, things get worse from there.
- Mean Boss:
- In the series, at least one employee (Mel) has been disgruntled enough by his poor treatment of his workers, and he also straight-up mentions that his personal assistant (whose name he doesn't even know until later nor did he ever try to) isn't paid that much more than a paid intern.
- In "Internabout", when Hiro works as an intern for him, he dismisses his attempts at doing anything tech-related, including an invention he'd been working on and instead relegates him to You, Get Me Coffee. In one gag, he also briefly insists on calling Hiro, "intern", while Hiro calls him "CEO". After Hiro rescues him from Noodle Burger Boy and Trina, he apologizes for treating him poorly (and acknowledges that his assistant is supposed to run his errands) and lets Hiro have a lab.
- Named After Someone Famous: His last name is a homonym for Cray, as in Seymour Cray of Cray Computers fame.
- No Celebrities Were Harmed: He somewhat resembles Michael Bay.
- Noodle Incident: In "Internabout", he has Hiro pick up his dry-cleaning, including a brown cow costume that he doesn't want him to ask about. He mentions over the phone with someone that he had to wear it for something.
- Not Now, Kid: After hiring Hiro as an intern, he pays no attention to his proposal for a mini-magnet device and instead relegates him to running errands. It also shows that he's been taking his connection to Hiro and Big Hero 6 for granted, considering that when he first met Hiro in the film, he was impressed by his microbots and tried to buy them from him.
- Pet the Dog:
- A Blink-and-You-Miss-It, but as Krei is being asked questions by the police after Yokai's attack in the movie, Abigail is being taken to an ambulance by paramedics. If you look closely, you can see this glare shifting automatically to her, indicating he worries for her current well-being and probably feels guilty about what happened to her because of his actions.
- The end credits of the movie show that he's the one unveiling the Tadashi Hamada Convention Hall at SFIT.
- In the series, he is shown to be sincerely grateful for being rescued, though it is Downplayed due to his snarks and complaints.
- At the end of "Internabout", he's grateful towards Hiro for rescuing him from Noodle Burger Boy's Conveyor Belt o' Doom, apologizes for treating him poorly as an intern, and while he still wants him to get him coffee, he'll give him a lab this time after being impressed by the magnetic device he used to rescue him. Downplayed in that Hiro is still bound to him due to a contract, but Krei is making it worth his while now.
- In "Muira-Horror!", after traveling through the Muira Woods with Hiro and GoGo and helping rescue Ned, he thanks Hiro for joining him and changes his mind about expanding Krei-Tech into the woods, jokingly reasoning that without the woods, future executives can't teach their interns about what they know about the woods. He tops it off with affectionately tousling Hiro's hair. Aww.
- Properly Paranoid: Lamphshaded by his assistant in "The Impatient Patient", in which Krei replies:Krei: Hey, I was abducted [by the Mad Jacks]! It does things to you...
- Red Herring: Early in the movie, Fred uses his comic book knowledge to point out that Krei could be leading a double life as Yokai. It turns out that he is not the Big Bad but is inadvertently responsible for Yokai's creation and is actually the target of his vengeance.
- The Resenter: Quite possibly towards Liv Amara. It's more than justified in that Liv is brilliant and became a billionaire by 23, while it took Krei years to achieve the success he has now.
- Screw the Rules, I Have Money!: Seems to be Krei's motto in the series.
- Secret Keeper: Krei knows the identities of the six heroes who saved him, but he only reports Yokai to the police. This is how he repays the team for saving his life, and for rescuing Abigail. Subverted in the series, in which he threatens to reveal their identities if they don't do what he wants.
- Ship Tease:
- With Aunt Cass in the series. They first meet in "Aunt Cass Goes Out" and end up having falling in love at first sight. It lasts until the end of the episode, as Aunt Cass learns that Krei is a jerkass and Corrupt Corporate Executive, so she rejects him.
- With Liv Amara. He's jealous of her success at a young age and considers her a rival, and while at her party in her debut episode, he grumbles about how she's "beautiful, brilliant, and gorgeous" and doesn't see how any of those traits make her successful. Shortly after, Amara notices him while talking to other people and waves to him, and he, flustered, waves back. Later, in "Countdown to Catastrophe", he passes by Amara and Karmi geeking out together and awkwardly tries to enter the conversation by laughing with them after they share a joke. Seems to sink as of "Seventh Wheel", where they share a table at her dinner party and he once again blows his chances by being his typical self, which seems to turn her off.
- Sir Not-Appearing-in-This-Trailer: Absent from all of the movie's trailers.
- Thin Chin of Sin: He has a pointy chin. Turns out to be a Double Subversion as he is not a villain, but in The Series, he is shown to be a Mean Boss and a downplayed example of Corrupt Corporate Executive.
- Unknown Rival: In "A Big Problem", Krei envies Amara and considers her a rival, but at her party, she kindly waves at him while talking to other guests, implying that she isn't aware of his jealousy and thinks that they're something along the lines of friends, though that may be because she knows him by reputation.
Alistair Krei's assistant.
- Affectionate Gesture to the Head: Gives one to Hiro in "Aunt Cass Goes Out" and a sarcastic one in "Internabout".
- Aloof Dark-Haired Girl: Krei's assistant has dark hair and has an indifferent, stoic demeanor.
- Ambiguously Brown: She seems to be of Asian descent.
- Ascended Extra: Her personality is delved into more in the series.
- Beleaguered Assistant: She seems to be coping with it pretty well. Krei mentions in "Internabout" that her pay isn't much higher than a paid intern at his company and he hasn't bothered to learn her name until the end of the episode.
- Boyish Short Hair: Wears a short, pixie cut.
- Deadpan Snarker: She can be sarcastic and critical of Krei's decisions.
- The Dragon: She's the only one that Krei lets in on about his secrets, though she doesn't seem to like all of the secrecy.
- Given Name Reveal: She's just known and credited as "Krei's Assistant" until "Internabout", where she tells Hiro her name is Judy.
- Hey, You!: Krei hasn't even bothered learning or even remembering her name, Judy, and addresses to her as simply "Assistant".
- Identical Stranger: Her character model for the movie looks like a female version of Tadashi. Averted in the series where she's given rounder cheeks and red lips, which obviously differentiates Judy from Tadashi.
- Meganekko: Wears glasses and is quite attractive.
- Lady in a Power Suit: Wears a grey suit and is Krei's collected, smart and sarcastic assistant.
- Sassy Secretary: Krei's assistant and secretary whose sassy comments are exclusively reserved at her boss.
- Servile Snarker: Goes along well with Krei's comedic narcissism.
- Stepford Snarker: Definitely copes with Krei's self-centrism and Bad Boss tendencies with sarcasm.
- Stoic Spectacles: Doesn't show much facial expression, even as she snarks at her boss.
- Suddenly Voiced: She speaks in the series after being The Voiceless in the movie.
- The Voiceless: She did not speak until the series.
- Women Are Wiser: Krei's assistant doesn't like Krei's secrecy tendencies and gives him more logical advices that of course Krei ignores most of the time.
- You Never Asked: No one knows her real name because they never asked. In "Internabout", when Hiro and Krei get into conversations with her, they're not sure what to call her by until she gives them her real name.Hiro: Oh! H-hi! Uh...
Assistant: Judy. No one ever asks.
Krei: Thank you, um...
Krei: [clears throat] Really? Huh.
A test pilot who was seemingly killed in a teleportation accident.
- Ace Pilot: Implied to be one by how she was chosen to be the pilot for "Operation Silent Sparrow".
- Adapted Out: Downplayed. While her minor role in the movie was the whole reason behind Yokai's actions, Abigail doesn't appear again in the series, other than on a picture on Callaghan's cell wall and being mentioned by him.
- The Cameo: Appears in picture on her father's jail cell's wall in "Mini-Max".
- Cynicism Catalyst: Her apparent death by the portal was what caused Callaghan to become Yokai in his desire to avenge her.
- Daddy's Girl: She is shown to be very close to her father. Her apparent death even causes him to turn to villainy.
- Damsel in Distress: Has her pod trapped in a portal and is left unconscious due to being in stasis. She gets saved by the main protagonists.
- Disney Death: Justified. She appears to have died in the botched portal teleportation, but it's revealed she wasn't killed—just cryogenically frozen or, in Baymax's words, "in hypersleep."
- Former Teen Rebel: Participated in underground bot fighting when she was younger, according to her father.
- Girl in a Box: Abigail in a space pod.
- Human Popsicle: A variant. After the portal breaks, Abigail's pod has activated a state of cryo-sleep, probably to protect her. She's unconscious when found by Baymax and Hiro.
- Innocent Blue Eyes: In contrast to her father's Icy Blue Eyes.
- Meaningful Name: Her name means "Father's joy," and losing her was her father's Start of Darkness.
- Morality Chain: Her apparent death caused her father to turn to villainy. When she's brought back by Hiro and revealed to be alive, Callaghan realizes all of his actions were for nothing.
- Not Quite Dead: While everyone including her father believed her to be dead after Operation Silent Sparrow went awry, turns out Abigail was simply in cryo-sleep in her pod that was still floating in the abyss.
- Posthumous Character: Subverted; she's not dead, just cryogenically frozen.
- Small Role, Big Impact: She only shows up in the later half of the movie, but she is the indirect cause of the movie's major moments (her "death" causes her father's Start of Darkness which led him to steal Hiro's microbots, which led to Tadashi's death and the forming of Big Hero 6).
- Tomboyish Ponytail: Is a Former Teen Rebel and wears her hair in a short ponytail.
- Walking Spoiler: Her existence provides a major clue to Yokai's motives.
Dr. Mel Meyer
Appearances: The Series (debut: "Aunt Cass Goes Out")
A scientist who invented the Flexible Display technology and sold it to Krei.
- Abhorrent Admirer: Develops feelings for Aunt Cass, but she find him weird and creepy.
- Adorkable: Actually a pretty excitable guy who likes surprise parties.
- Alliterative Name: Mel Meyer.
- Anti-Villain: He doesn't seem to be a bad person. All he wanted was for Krei to stop using his technology for his own selfish desires.
- Brainy Brunette: A brown-haired scientist that created the Flexible Display technology.
- Butt-Monkey: Nothing goes right for him, not even his intended villainous scheme.
- Cloud Cuckoo Lander: Is a bit eccentric, by how he always mentions his love of surprise parties.
- Harmless Villain: While the antagonist of his debut episode, he's so pathetically funny he's no threat whatsoever. The real threat of the episode are the Buddy Guards.
- Kick the Son of a Bitch: He sneaked on Krei during his date with Aunt Cass, tied and gagged him before impersonating to get his invention back. Considering how much of a jerk Krei can be, he kinda had it coming.
- Labcoat of Science and Medicine: A scientist working for Krei Tech who wears a white lab coat.
- Latex Perfection: The Flexible Display technology device can overlay an image over whatever it covers. Mel uses it to impersonate Krei.
- Laughably Evil: Despite Mel being the main villain of "Aunt Cass Goes Out", he's simply a bumbling scientist that nothing ever works in his favor.
- Monster of the Week: He's the main antagonist of "Aunt Cass Goes Out" and isn't seen again since. Justified since his actions causes him to be arrested and incarcerated.
- Nerd Glasses: A geeky scientist that wears large glasses.
- Not So Great Escape: Mel tries to get away using the invisibility cloak, but it fails to cover his feet.
- One-Shot Character: Only starred in "Aunt Cass Goes Out" and isn't seen or mentioned again since.
- Smart People Wear Glasses: Mel wears glasses and he created the Flexible Display technology.
- Villain Has a Point: As Aunt Cass points out, Mel had the right to be angry at Krei for him using his invention for the wrong reasons.
The Mole Family
Appearances: The Series (debut: "Issue 188")
- Abhorrent Admirer: Has a Precocious Crush on GoGo and constantly refers to her as "Dream Girl". It irritates GoGo to no end, and even if she tells him she'll never date him, it doesn't stops Richardson from hitting on her.
- Amazon Chaser: All of GoGo's actions of aggression or violence, especially towards Fred, or Fred-analogs, and even towards Richardson himself, have been met quite positively.
- Beauty Mark: On his cheek, underneath his left eye.
- Blackmail: In "Big Hero 7", Richardson uses his knowledge of the team's secret to first get his hands on some of Fred's stuff, then to force his way into Big Hero 6.
- Blatant Lies: Richardson claims to be both an expert on, and best friends with, Big Hero 6. He even goes so far as to display a framed picture of Fredzilla "autographed" to him from "Lizard Guy", and claim he and Big Hero 6 have brunches and go apple picking together. Of course, Fred knows it's not true since he is in Big Hero 6, which irritates him to no end and prompts him to accidentally reveal his identity to Richardson.
- Bratty Half-Pint: A short 11 year old brat that loves to annoy and get on people's nerves, especially Fred.
- Bullying a Dragon: On his first mission out and still not used to his suit, Richardson gets the bright idea to mock Juniper's dancing. Barb promptly hands his butt to him.
- Captain Ersatz: A in-universe example. When he briefly joins Big Hero 6, his suit is a carbon copy of Fred's, only smaller, red with purple and dark blue highlights (instead of blue and orange highlights). Fred despises it.
- The Chew Toy: The entire time he spends as the seventh member of Big Hero 6 is simply him not being able to control his suit, have his comic book store trashed, get his ass kicked by High Voltage and have his memory wiped from him. Considering how much of a jerk he is, it's pretty satisfying to see karma get back at him.
- Companion Cube: He talks and gloats to his action figures like they're his friends because he doesn't have any real ones.
- Deadpan Snarker: Not the good-natured variety. Mostly at Fred's, and to a lesser extent, Krei's expenses.
- Easy Amnesia: A zap from High Voltage's energy orb conveniently makes Richardson forget the team's secret.
- False Friend: In "Supersonic Sue" he put up a whole gambit to let Fred's guards down, pretend to be his friend so that he could be invited over to Fred's house and steal Captain Fancy's underpants from his room.
- Fanboy: Of comic books, just like Fred. He's also a huge Big Hero 6 fan, especially of "Lizard Guy" (who unknown to him, is actually Fred).
- Fat Bastard: A short, plumpy brat with a condescending attitude.
- Friendless Background: Richardson is still into this phase. The only thing he could call "friends" are his collectible items.
- Harmless Electrocution: In "Big Hero 7", Richardson gets zapped by High Voltage's energy orb, and all it does is make him forget about Big Hero 6's secret identities.
- I Just Want to Have Friends: Fred realizes he's very lonely and collects memorabilia to fill the void.
- Irony: Has a crush on Gogo and despises Fred, while he doesn't care about Gogo's alter ego and fanboys over Fred's alter ego as "Lizard Guy".
- Jerkass: A smug, irritable brat that loves to make Fred's life a living hell, is harassing GoGo to date her and blackmails people to get what he wants.
- Jerk with a Heart of Jerk: At the end of "Big Hero 7", it looks like he and Fred have bonded, and he even thanks Fred for saving him. When Fred asks if this means he won't blab about their superhero identities, Mole laughs and says of course not as he prepares to call reporters and tell them all about it. Luckily, an accident immediately happens to him that gives him total amnesia about the past few hours.
- Laser-Guided Amnesia: After being electrocuted by High Voltage's energy orb, Richardson fortunately forgets the events of the whole episode where he knew of the team's secret.
- Laser-Guided Karma: What did Richardson honestly expect when mocking Juniper's dancing in front of her mother, who has electricity abilities?
- Lonely Rich Kid: "Supersonic Sue" reveals that underneath his jerk persona, Richardson is actually pretty lonely and fills his void of friends with action figures and collection objects.
- Malicious Misnaming: He refers to Krei as "Creep".
- Meaningful Name: He has a Beauty Mark on his face.
- Non-Action Guy: Justified. Richardson is still an 11 year old child and didn't get enough time to get used to his suit, which caused him to get almost hurt trying to jump and his butt kicked by High Voltage more than once.
- Not So Different: Despite his hatred with Fred that is reciprocated, both actually have some points in common, such as their love of comic books, Noodle Burger and hatred of cilantro. Ironically, Mole exploited this trope to be fake a friendship with Fred and steal a collectible from him to fill his lack of friends, while he could've actually have a real friend in Fred.
- Precocious Crush: Has a very open crush GoGo despite being much younger than her. Ironically, he couldn't care less about her superhero alter-ego.
- Serious Business: Comic books. He went so far as to cut off the power to Fred's extensive mansion just to deny him a comic book from an online auction. Given the size of the estate, and what superhero amenities lurks in it, this was clearly not an easy task.
- The Rival: To Fred. Their families have been rivals for quite a long time, so they grew up into it. Richardson goes so far as to have his private sanctum underneath his shop stocked specifically with arcade games that are based on bringing suffering and misery to the man, and even has decorations such as cardboard cutouts of Fred that yell "Ow!" when you shoot them.
- Sitcom Arch-Nemesis: To Fred. Both consider the other their "arch-enemy" and always bicker in petty quarrels.
- Sixth Ranger: He blackmails Big Hero 6 into having him join their ranks, making the team Big Hero 7. It doesn't last.
- Smug Snake: Constantly brags and boasts himself.
- Spoiled Brat: Comes from a rich family, has his own comic book shop at 11 years of age and is overall a pretty irritable person. This contrasts with Fred's Spoiled Sweet.
- Troll: Loves to annoy others, especially Fred, for his own amusement.
- Ungrateful Bastard: Even after Fred saves his life, Richardson reveals he already had a TV interview set up and still intends to reveal Big Hero 6's identities to the public. Luckily he forgets everything before that can happen.
- Wealth's in a Name: Richardson Mole, for a Spoiled Brat.
- Young Entrepreneur: Has his own comic book store at only 11 years old. Though it's unknown if his parents contributed into it.
Beverly Samantha "Binky" Mole
Appearances: The Series (debut: "Fred's Bro-Tillion")
Richardson Mole's mother, a prominent woman in San Fransokyo's aristocracy elite with an unpleasant attitude.
- Beauty Mark: Has one under her left eye, just like her son. This showcases they're related.
- Butt-Monkey: Constantly found herself victim of Fred's antics over the years, to Mrs. Frederickson's dismay. No wonder she has contempt for them...
- The Fashionista: Flashbacks of Binky through Fred's memories shows that Binky has good sense of fashion and multiple outfits for every occasion.
- Haughty "Hmph": Though is not heard saying it, her body language scream this as she stomps away from Mrs. Frederickson each time Fred ruins his mother's attempts to impress Binky.
- Jerkass: Is such an unpleasant woman, even Heathcliff can't hide how much he despises her.
- Like Parent, Like Child: No wonder Richardson is a Jerkass if he was raised by one.
- Meaningful Name: Has a Beauty Mark on her face.
- Parental Neglect: Implied. Considering how much of a Jerkass Binky is, she's probably not the same kind mother Mrs. Frederickson is to Fred. This would explain why Richardson is constantly craving (negative) attention and why he is only has collection objects as friends, where he can be himself.
- Perpetual Frowner: Is never seen not frowning in annoyance and contempt.
- Phrase Catcher:Mrs. Frederickson: Binky, wait!
- Prim and Proper Bun: How she styles her hair.
- Rich Bitch: A wealthy woman with a haughty and bad attitude.
- The Rival: The Moles are The Fredericksons' rivals, as seen with Fred and Richardson who hate eachother since as long as they can remember.
- Running Gag: Her haughtily stomping away while Mrs. Frederickson begs her to wait after Fred messes things up.
- The Voiceless: Doesn't have dialogue in either of her appearances.
Appearances: The Series (debut: "Baymax Returns")
The news anchor and reporter at 7 News, San Fransokyo's news network.
- Ascended Extra: The series pilot "Baymax Returns" has him saying the exact same dialogue as the reporter from the end of the film talking about Big Hero 6, indicating he's that same reporter.
- Blatant Lies: Tells Liv Amara he's a "big fan" of hers. Baymax's lie detector proves otherwise (which funnily enough proves that Liv isn't a big fan of Bluff, either).
- Brutal Honesty: Says everything on his mind without thinking it twice, which can unconsciously come out as stingy.
- Distressed Dude: Gets saved from being crushed by a rock in time by Baymax in the Season 1 finale.
- Jerkass Ball: Bluff can be quite obnoxious and self-centered. Him poking fun at Hiro's short height multiple times in "Something Fluffy" was probably his biggest dick move.
- Intrepid Reporter: Seems to be genuinely passioned about his work and puts extreme measures to get "second-by-second updates" on criminal activities happening in the city.
- It's All About Me: In "Countdown To Catastrophe", he mentions how glad he was to be saved from the city being destroyed... then remembers he's live on TV and quickly corrects himself by saying the rest of the entire city.
- Kent Brockman News: A weird news anchor that likes to discuss about "Food He Doesn't Care About" after telling the news.
- Kind Hearted Cat Lover: Implied by how he loves "Slow Clap Cat", a.k.a Mochi.
- Married to the Job: Implied. He seems to be loving his job and we know nothing outside of his professional life.
- Motor Mouth: He talks at a very fast pace while reporting the news.
- Nerd Glasses: Wears thick black glasses.
- No Celebrities Were Harmed: Appears to be modeled after Pat O'Brien◊, a sportscaster and later an anchor of various entertainment shows.
- Perpetual Smiler: Justified, since it's part of his job to look good on TV.
- Pungeon Master: Loves to use puns as he tells the news about Big Hero 6 and the villains they face.
- Renaissance Man: Bluff Dunder is a news anchor, a reporter, and basically the equivalent of BuzzFeed in which he tries to get the lastest details on heroes, criminals and high-profiled figures such as Liv Amara (and even memetic figures like Mochi). He also has his own sequence on TV called "Foods I Don't Care About" when there aren't any news to tell.
- Small Name, Big Ego: Insists of giving an autograph to Cass. Even after Cass refuses.
- They Call Me Mr Tibbs: Tells Aunt Cass "Mr. Dunder is my dad" and asks to be called Bluff.
- Who Names Their Kid "Dude"?: We have yet to know if "Bluff" is his stage name or his birth name.
A celebrity chef Aunt Cass duels in the Food Fight competitions.
- Affectionate Parody: Of Gordon Ramsay. He actually voices this character for the occasion!
- Badasses Wear Bandanas: Wears a red bandana in the cooking competitions.
- British Stuffiness: Is a smug, haughty chef with a british accent.
- Cheaters Never Prosper: Tries to ruin Cass' meals and to refrain her from advancing in her cooking. It quickly backfires at him (literally as his dish burns).
- Chef of Iron: A Supreme Chef that participates in underground cooking competitions.
- Even Bad Men Love Their Mamas: Or their Nanas, in Bolton's case. His knives were a gift from her and he seemed heartbroken to have no other choice to give them to Cass.
- Ink-Suit Actor: Looks like a younger Gordon Ramsay. His name is even based off his voice actor's! (Bolton Gramercy, Gordon Ramsay)
- Jerkass: Is rude, condescending and constantly mocks Cass, who is a fan of him! He gets better, though.
- Laser-Guided Karma: Does multiple cheating attempts to make Cass fail, but it only leads him to lose the duel and be the first (of among others) chef Cass defeats in the Food Fight competitions.
- Mean Brit: Has the british accent of his voice actor and is arrogant and condescending towards Cass. Though he gets better at the end of the episode.
- Smug Snake: Is arrogant and thinks he's the best chef around.
- Supreme Chef: Just like his voice actor, Bolton Gramercy is a famous renowned chef.
- Took a Level in Kindness: By the end of the episode, Bolton goes back in the Lucky Cat, apologizes to Cass for his atrocious behavior and acknowledges her as a real chef.
Appearances: The Series (debut: "The Impatient Patient")
Hiro and Aunt Cass' family doctor.
- Always Second Best: Feels this way towards Baymax, who is programmed with over 10,000 medical procedures and can detect parts of Hiro's injuries she hasn't. This is why she despises him.
- Berserk Button: Baymax's sole existence seems to be this. Downplayed as she can remain calm pretty well.
- Dressed to Heal: Wears a light blue scrub suit and is a family doctor.
- Dr. Jerk: Downplayed. Sheila is a good doctor and clearly loves her job, but her jerk side is exclusively reserved at Baymax's expense.
- Fiery Redhead: Downplayed. She's more blunt than outright explosive, and her sour side is mostly aimed at Baymax.
- Green-Eyed Monster: Holds animosity in Baymax's expense since he does her job better than her. Bonus points for having actual green eyes.
- Meaningful Name: The name "Sheila" can mean "blind", and while Dr. Sheila isn't, she can leave out some parts of her diagnosis Baymax always remarks.
- Meganekko: Her large purple glasses give her a friendly appearance.
- One-Shot Character: Only appears in "The Impatient Patient".
- Smart People Wear Glasses: Is a doctor and wears large glasses.
- Technophobia: While not scared of technology, she dislikes Baymax for stealing her part of the job. Though she manages to remain calm and tries to convince herself it's "the future".
Appearances: The Series (debut: "Killer App")
The manager of Noodle Burger.
- Bear Hug: Gives a strong hug to Fred after Noodle Burger Boy disappears. Fred is trapped into it.
- Benevolent Boss: Implied. Sara is kind and even treats Noodle Burger Boy as a person rather than an object.
- Inelegant Blubbering: In "Killer App", after Noodle Burger Boy is gone missing, she breaks into tears in Fred's arms and her sobbings is loud and incomprehensible. Fred tries to get away, but her hold on him is too strong.
- Nice Girl: An overall kind and friendly woman, who cares about Noodle Burger Boy like a mother would and was willing to give a chance to Globby to work at the restaurant.
- Parental Substitute: Cares about Noodle Burger Boy like her own son and is devastated once he is taken in "Killer App". Her second appearance in "Internabout" shows she still misses him every day.
- Prim and Proper Bun: Subverted. Sara is overly emotional, and wears her hair in a bun.
- Tropey, Come Home: She desperately hopes and waits for the day Noodle Burger Boy comes back to Noodle Burger. In "Internabout", she tells him he is home, but Noodle Burger Boy sees Krei Tech as his home.
- Yank the Dog's Chain: Thinks Noodle Burger Boy is finally coming back "home" in "Internabout"... only he is malfunctioning, breaks everything in the restaurant and leaves her once again.
One of Wendy Wower's fans who Fred sees as a rival.
- Always Someone Better: In Fred's eyes, Brooke is better than him at everything and is jealous of her.
- Brutal Honesty: Abruptly states that Fred's "lizard monster" form is just a guy in a suit right after Fred invented a story from scratch of his "origins". Justified since she's a child, and children tend to say everything on their mind without thinking it twice.
- The Cameo: Appears in "Internabout" as she is saved from Noodle Burger Boy's rampage by GoGo.
- Cheerful Child: A little girl that's excited to learn science from Wendy Wower.
- Children Are Innocent: Doesn't see that Fred is jealous of her, and is your average Cheerful Child. Especially compared to the weird little boy from her group.
- The Cutie: You can't say she isn't adorable.
- Damsel in Distress: Gets saved by GoGo from Noodle Burger Boy in "Internabout".
- Fangirl: Is a "Woweroo"; a Wendy Wower fan.
- Girlish Pigtails: A little girl that wears her hair in pigtails.
- Hair of Gold, Heart of Gold: Has light blonde hair and is an overall sweet kid.
- Innocent Blue Eyes: A cute little girl with blue eyes that hint her innocent nature.
- Nice Girl: A sweet, friendly kid.
- One Sided Rivalry: Fred tries to be better than her and is jealous of Brooke. Brooke doesn't seem to be aware and is even friendly with him.
- Pink Means Feminine: Wears a dark pink dress over a light pink shirt.
- Unknown Rival: Has seemingly no idea that Fred sees her as competition.
Weird Little Boy
One of Wendy Wower's fans who has some... weird quips.
- Anime Hair: Has light blonde anime-like spikey hair.
- The Cameo: Appears in "Nega-Globby" as the kid Globby puts on his shoulders.
- Cloud Cuckoo Lander: Seems to be living in his own universe. He thought Fred's Kaiju suit was a real lizard born from flames before Brooke points out it's just a guy in a suit.
- Creepy Child: Played for Laughs.
- Creepy Monotone: Speaks in the same mischevious, deadpan voice tone.
- Dark-Skinned Blond: Has light blonde hair and tan skin.
- Fanboy: Of Wendy Wower, and "Nega-Globby" reveals he idolizes Globby by how he's happy Globby put him on his shoulders.
- Goggles Do Nothing: Wears three pairs of googles on top of his head for seemingly no reason.
- Hidden Depths: Despite having a Troubling Unchild Like Behavior, he's a fan of the cheerful Wendy Wower. Though watching her teach science may only fuel his Mad Scientist tendencies.
- Leitmotif: In "Small Hiro One", each time he's on screen and says something weird, a distorted tinkling can be heard in the background.
- Let's Get Dangerous!: Played for Laughs when he puts three pair of googles to see the baking soda volcanoes explode.Weird Little Boy: Huzzah!
- No Name Given: Only credited as "Weird Little Boy".
- Shoulder Teammate: Globby puts him on his shoulders in "Nega-Globby".
- Thrill Seeker: Implied by how he puts three pairs of goggles only to see a baking soda volcano explode.
- Troubling Unchild Like Behavior: This kid wears a skull shirt, "fears nothing" and wears three pair of goggles as he expects a baking volcano to do a grandiose explosion. It seems to trouble Hiro. All Played for Laughs:Weird Little Boy: I can hear the tiny screams.
Appearances: The Series (first mentioned in "Failure Mode", debuted in "Rivalry Weak")
An artist and a scientist. She produced the painting, "City Rising".
- Abandoned Laboratory: Her scientific endeavors being kept hidden from the public, her basement lab has been abandoned for centuries before being discovered by the team during Rivalry Week.
- Ambiguously Evil: Obake sought out her painting "City Rising", because behind it are blueprints for some sort of machine. It's later revealed she just caused a tragic accident.
- Been There, Shaped History: The Great Catastrophe, which is believed to be the 1906 San Francisco earthquake, was caused by her trying to make a source of unlimited power.
- Brainy Brunette: Is both a skilled artist and brilliant scientist, and has dark hair.
- Broken Pedestal: While Honey visibly idolizes Shimamoto, she's greatly shocked to learn her favorite artist accidentally caused The Great Catastrophe. Downplayed as it was not intentional.
- Early-Bird Cameo: Appears in "Issue 188" as the figure on the 100$ bill.
- Gone Horribly Wrong: Her experiment on building an infinite source of energy backfired horribly, accidentally a star that collapsed on itself and caused The Great Catastrophe (San Fransokyo's equivalent of the 1906 San Francisco earthquake). It devasted the city and killed a lot of people in the process. Shimamoto deeply regretted her actions, probably to her last breath.
- Hidden Depths: People discover In-Universe she was an artist with a passion for science, which she kept a secret.
- Invisible Writing: Wrote the codings of her machine in invisible ink in her diary. Honey and GoGo think it's just blank pages, but Obake knew better.
- Meaningful Name:
- The Japanese surname "Shimamoto" means "island of origin". Her attempts of building an energy amplifier accidentally created The Great Catastrophe", which caused the reconstruction of the San Fransokyo of today.
- "Lenore" also means "light". Light is a source of energy, and Lenore Shimamoto tried to create an infinite source of energy.
- Monochrome Past: Each flashback of her appearances are shown in sepia coloring.
- My God, What Have I Done?: She tried to create an artificial star in search of discovering a source for unlimited energy, but it went haywire and destroyed San Francisco in an earthquake. In her recorded message, she expresses regret over this and requests that no one tries to reconstruct the machine from her blueprints.
- Nice Job Breaking It, Hero!: Her machine is able to create an artificial star, but it collapses almost immediately after forming. The shockwave it produced is the cause of the Great Catastrophe which destroyed San Francisco.
- Posthumous Character: She's been dead for at least a century or two by the present day, having been around when San Francisco was wrecked by the 1906 earthquake and rebuilt into San Fransokyo.
- Prim and Proper Bun: Her main hairstyle.
- Raven Hair, Ivory Skin: Despite the sepia coloring she's always depicted in, Lenore Shimamoto is a Japanese woman with a pale complexion and dark hair.
- Secret Diary: Wrote her hidden scientific discoveries into one. Is a plot point in "Rivalry Weak", as Obake gets his hands on it since the codes for her invention Obake needs is written with invisible ink on the last blank pages.
- Appearances: The Series (debut: "Kentucky Kaiju")
A fictional monster from an eponymous film series that Fred orders an accurate-sized robot of.
- Alliterative Name: Kentucky Kaiju.
- Ambiguous Gender: While the mecha in the series is a robot thus has no gender, the movie Fred watches reveals that since it has an offspring, the Kentucky Kaiju character may actually be female.
- Attack of the 50-Foot Whatever: In the episode titled like his name, Kentucky Kaiju is a Mecha taller than a building ordered by Fred. After Noodle Burger Boy uses Obake's technology to hack it, it goes on a mayhem across the city, destroying things and terrorizing the citizens.
- Babies Ever After: In the final movie of the franchise, the Kentucky Kaiju is seen with a baby kaiju in its hands. It makes Fred shed a tear.
- Brainwashed and Crazy: The mecha gets hijacked and piloted by Noodle Burger Boy with Obake's help.
- Cute Monster: Its chibi form, anyway.
- Expy: Seems to be one of Godzilla, being an enormous green lizard monster that terrorizes citizens.
- Extra Eyes: Has three yellow eyes, where the controls of the mecha finds themselves at. They turn red when hacked by Obake's chip.
- Fire-Breathing Weapon: A mecha that can breathe fire.
- Green and Mean: Only when hijacked by Obake, otherwise averted.
- HeelFace Turn: Justified that being a Mecha, the Kentucky Kaiju is good or bad depending on who pilots it. Its first appearance makes it a villain due to being hacked by Obake, while in the Season 1 finale, a new mecha of Kentucky Kaiju is used by Fred and Hiro.
- Humongous Mecha: Fred orders an accurate-sized robot of the eponymous monster. Unfortunately, between the wrong hands, it can become quite destrutctive.
- In "Countdown To Catastrophe", Hiro and Fred use a new Kentucky Kaiju mecha in order to defeat Obake's plan by using Hiro's energy amplifier along with the Kaiju's to cancel the star's energy.
- Kaiju: It's in its name, after all.
- Mix-and-Match Critters: The character looks like a mix between a lizard and a dinosaur, completed with two giant pincers.
- Monster Is a Mommy: In the last movie of the franchise, that is.
- Mythology Gag: Fred orders a giant pilotable robot of the Kentucky Kaiju to pilot it around the city. In the original "Big Hero 6" comics, Fred could actually turn into a Kaiju.
- Power Pincers: Has two giant pincers which can be used to destroy things.
- Red Eyes, Take Warning: After it gets hijacked by Obake and Noodle Burger Boy, Kentucky Kaiju's eyes turn red as Noodle Burger Boy controls it through the city to destroy everything.
- Silent Snarker: In the "Big Chibi 6" short called "Snoring", the team uses the Kentucky Kaiju mecha to try and wake up Honey Lemon by having it break through the wall and roar. When Honey simply yawns and turns around in her bed, still sound asleep, the Kentucky Kaiju gives an annoyed glare that can be read as "seriously?"
- Show Within a Show: More like "Film Within a Show". The Kentucky Kaiju movie franchise is pretty popular in San Fransokyo, similarly to an IRL franchise about a large lizard terrorizing a city.