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"Big Problem" is the eighteenth episode of Big Hero 6: The Series. It premiered on September 15, 2018.


Fred is in the room reading comics with Mini-Max until his Mom calls for him. They are expecting a guest for dinner, Orso Knox, and Fred needs to be properly dressed for the occasion. He tells her he is dressed for dinner and then goes back to reading his comic. Suddenly, a monster bursts into his room. Mini-Max jumps in to fight it off, but the monster throws him to one said. It then for the portrait of Fred's father, and then corners Fred. The monster gives off a loud roar, says a few words and then runs off just before Mrs. Frederickson shows up to find her son's room vandalised.

Hiro, Baymax, and Go Go later arrive at the scene. Fred tells the about the monster, who describes it to be a combination of a whale and a dinosaur with hair. Mini-Max, who suffered some damage, provides everyone with a visual image of the monster. Baymax identifies the slobber it left behind to be from an unknown species, deducing it to be an actual monster. Fred suspects that it is another old foe of his dad's out for revenge. The next day at the SFIT labs, Fred, Hiro, and Honey Lemon rummage through large amount of files on all the enemies Fred's dad had as a superhero. So far they have found no match. Just then, Wasabi and Go Go show up to tell everyone that Granville was coming, not looking much like her usual self. When Granville does show up, she looks very excited. Self-made billionaire and founder of Sycorax, Liv Amara is visiting the school. She is funding SFIT's new bio-tech center, which will be named in her honor during a donation ceremony later in the week. She has also heard abotu Baymax and would to meet him and his supposed creator, Hiro. Amara's helicopter arrives, and Granville goes off to get her. Karmi suddenly rushes in all excited. She is a huge admirer of Liv Amara and hopes to meet. Granville soon arrives back with Amara. She introduces her to Hiro and Baymax. Amara is at first impressed with the robot, but quickly loses interest after learning that Hiro did not actually create him. On the way out, she meets Karmi, who shows off her latest invention to her: extradermal nano-receptors. Amara is so impressed that she invites Karmi to see the new bio-tech building with her. As for Hiro, he is left feeling envious because Karmi was succeeded in wowing Amara.

Meanwhile at Krei Tech Industries, Krei is in his office when suddenly the monster that attacked Fred bursts in. Like before, the beast says a few words, and leaves after terrorizing Krei. Honey Lenon, Go Go, and Fred later arrive at the scene. Krei gives them the same description Fred gave and re-quotes what the monster said "This thing of darkness I acknowledge mine". Much of a coincidence, Krei was supposed to be meeting with an investor, Orso Knox. The same man who was supposed to visit Fred's mother on the night the monster attacked his house.

Back at SFIT, Baymax finds Hiro building a temperature gradient device, which converts physical changes in heat to an understandable numerical value. He hopes to impress Liv Amara with this invention. Hiro finds her in the dining hall having lunch with Karmi, getting well acquainted. He shows off his invention to her, but she is not wowed by it since all he built was a big thermometer. Later that evening, Hiro, Baymax, Honey, and Fred visit Orso Knox's house to see if there is some connection between him and the monster. Mr. Knox is not at home, but they find the house opened and ransacked. As they search the office, the monster bursts in and attacks. Honey and Fred put up a fight, but the monster turns out to be tougher to beat. Hiro notices the monster is going for Mr. Knox's schedule. He tries to get to it first, but the monster grabs him and says "All the devils are here". On Hiro's command, Baymax switches to overdrive mode and frightens away the monster. However like before, overdrive mode drains his power, and he collapses after changing back. The four friends return to Frederickson Manor, pondering over the clues they have. Honey finds out that all the things the monster said are quotes from Shakespeare's play, The Tempest. They all know that Knox was a Shakespeare's fan, and by putting two and two together they deduce that the monster is actually Knox himself. Looking back at his schedule, they also figure out the attacks on Fred's house and Krei's office both occurred at the time of his appointments. This helps them deduce that Knox will attack Liv Amara next during the gala at SFIT.

On the day of the donation gala, Hiro upgrades everyone's supersuits with ultra armor. His friends notice that he is still jealous of Karmi's success with Amara, since he has started scoring his and her accomplishments. They each bring him down to earth, saying he cannot out best everyone. Karmi is special in ways that Hiro is not, which goes the same for himself and everyone else.

At the donation gala, Baymax, Wasabi, and Fred are on the look out for the monster while Hiro, Honey, and Go Go attend the ceremony. The gala is being held inside a large tent, filled with many rich and powerful people, including Krei. As the party goes on, the Orso Knox monster shows up just as Liv Amara takes to the stage to give a speech. Baymax, Wasabi, and Fred hold off the monster while Honey and Go Go, suited up, evacuate the guests from the tent. Big Hero 6 lure the monster into the tent and try to trap him inside, throwing everything they have. Despite all their efforts, the beast just breaks away from their restrains. The monster is about to attack Liv Amara, but Karmi uses her nano-receptors to sedate the monster. Not only does this save the day, but it also gives Liv further incentive to support Karmi and her endeavors. She also offers to take the monster in and have her team find a way to cure Mr. Knox of his monster mutation. As they prepare to transport him, Hiro thanks Karmi for her assistance despite his jealousy. Karmi responds by awkwardly professing her love for the hero, which embarrasses Hiro.



  • Moral: You are special in ways others are not, and others are special in ways you are not. Some people are just interested in what certain people have to offer and don't necessarily hold anything against people who aren't what they’re looking for.
  • Professor Granville's first name is revealed to be Grace as referred to by Liv.
  • The scene in which Liv meets Baymax is reminiscent of the scene where Hiro first meets Baymax in the original movie.
  • The photos that Krei admires early in the episode are based on shots from the original movie.
  • Orso Knox is a fan of the Shakespeare play The Tempest. Ironically, Liv Amara's company is called "Sycorax" who was the mentioned witch and mother of Caliban from The Tempest.
  • Knox's monster roars are those of a lion or tiger and the roars of the Tyrannosaurus Rex from the Jurassic Park films.
  • During the Gala, Hiro, Honey Lemon, and Go Go are dressed in their waiter outfits from "Fred's Bro-Tillion".
  • The team's ultra-armor costumes are based on the "Stealth Mode" action figure variants Bandai produced in 2015.


Concept art


v - e - d
Big Hero 6 logo
Films and Television: Big Hero 6 (video/soundtrack) • Big Hero 6: The SeriesBig Chibi 6: The ShortsBaymax!

Books: MangaThe Art of Big Hero 6Comic Books
Video Games: Big Hero 6: Battle in the BayBig Hero 6: Bot FightDisney Infinity seriesBig Hero 6: Baymax BlastKingdom Hearts IIIDisney Crossy RoadDisney Emoji BlitzDisney Magic KingdomsDisney Heroes: Battle ModeDisney Sorcerer's Arena

Disney Parks
San Fransokyo SquareThe Happy Ride with BaymaxThe AnnexThe Magic of Disney AnimationPLAY!

Entertainment: Baymax Super Exercise Expo
Fireworks: Happily Ever AfterDisney EnchantmentIlluminate! A Nighttime CelebrationMomentousWonderful World of AnimationDisney in the StarsWondrous Journeys
Parades: Dreaming Up!Disney Harmony in Color! Parade

Original: Hiro HamadaBaymaxTadashi HamadaGo Go TomagoHoney LemonWasabiFredAunt CassRobert Callaghan/YokaiAbigail CallaghanAlistair KreiSergeant GersonMochiYamaMr. FredericksonMrs. FredericksonHeathcliffJudyThe Ringleader

The Series: Professor GranvilleObakeBaron Von SteamerKarmiHigh VoltageRichardson MoleGlobbyFelony CarlMomakaseMad JacksMini-MaxMr. SparklesWendy WowerTrevor TrengroveNoodle Burger BoyLenore ShimamotoTrinaLiv AmaraDi AmaraOrso KnoxMegan CruzChief CruzChrisAC and DCNega-GlobbyMayoiSupersonic SueHardlightRoddy Blair
Baymax!: Kiko TanakaSofiaAliMbitaYukioYachi
Deleted: The Fujitas

Big Hero 6: The Series

Shorts: "Baymax and Fred" • "Baymax and Go Go" • "Baymax and Wasabi" • "Baymax and Hiro" • "Baymax and Mochi" • "Baymax and Honey Lemon" • "Baymax Dreams of Too Many Baymaxes" • "Baymax Dreams of Evil Sheep" • "Baymax Dreams of Bed Bugs" • "Baymax Dreams of Mochizilla" • "Baymax Dreams of Too Many Freds"
Season One: "Baymax Returns" • "Issue 188" • "Big Roommates 2" • "Fred's Bro-Tillion" • "Food Fight" • "Muirahara Woods" • "Failure Mode" • "Aunt Cass Goes Out" • "The Impatient Patient" • "Mr. Sparkles Loses His Sparkle" • "Killer App" • "Small Hiro One" • "Kentucky Kaiju" • "Rivalry Weak" • "Fan Friction" • "Mini-Max" • "Big Hero 7" • "Big Problem" • "Steamer's Revenge" • "The Bot Fighter" • "Obake Yashiki" • "Countdown to Catastrophe"
Season Two: "Internabout" • "Seventh Wheel" • "Prey Date" • "Something's Fishy" • "Nega-Globby" • "The Fate of the Roommates" • "Muira-Horror!" • "Something Fluffy" • "Supersonic Sue" • "Lie Detector" • "Write Turn Here" • "City of Monsters" • "Mini-Maximum Trouble" • "El Fuego" • "The Globby Within" • "Hardlight" • "The Present" • "Hiro the Villain" • "Portal Enemy" • "Fred the Fugitive" • "Major Blast" • "Fear Not" • "Legacies"
Season Three: "The Hyper-Potamus Pizza-Party-Torium" • "Mayor for a Day/The Dog Craze of Summer" • "Trading Chips/Mini Noodle Burger Max" • "A Friendly Face/Big Chibi 6" • "Cobra and Mongoose/Better Off Fred" • "Big Hero Battle/Go Go the Woweroo" • "The New Nega-Globby/De-Based" • "The MiSFIT/Return To Sycorax" • "A Fresh Sparkles/Noodle Burger Ploy" • "Krei-oke Night/The Mascot Upshot"

Baymax!: "Cass" • "Kiko" • "Sofia" • "Mbita" • "Yachi" • "Baymax"

Big Hero 6
San FransokyoLucky Cat CaféSan Fransokyo Institute of TechnologyAkuma IslandFrederickson ManorKrei Tech IndustriesNoodle BurgerObake's LairSycoraxFrederickson Candy Co.
MicrobotsMegabotBaymax's ChipHoney Lemon's Chem-PurseYokai's MaskLittle YamaSilent SparrowSkymaxesLenore Shimamoto's JournalKentucky KaijuEnergy AmplifierGo Go's Cycle
StoryImmortalsWe've Got Dance PowerNoodle SongWe're Gonna Be GoodWe Are 4 2 SingDark MatterWoweroo RapB-A-Y-M-A-XA New AngleHappy SongBa La La La La La La La LaKoo Loo LeeOne Sweet Ride