Disney Wiki
Disney Wiki

We were asked to do the impossible. That's what we did. We've reinvented the very concept of transportation. Friends, I present Project Silent Sparrow.
―Krei, presenting his project

Project Silent Sparrow is the name of a portal that was built by Krei Tech Industries as Alistair Krei tried to make science fiction a reality and to create a new way of transportation on Akuma Island. Yokai, however, took the portal for himself used it as a destructive weapon against Alistair.

Role in the film[]

Teleportation. The transport of matter instantaneously through space. Not science fiction anymore.

Hiro Hamada saw blueprints of Silent Sparrow at the warehouse, where he first encountered Yokai and then later saw the masked man bringing one of the three parts of the portal to San Fransokyo Bay, but had no idea what it was, what it is for or what the red bird logo on it means. After upgrading himself, his friends and Baymax, the team headed to Akuma Island and discovered the last part of it as they were trying to find Yokai. The team watched footage from the control pit and saw Alistair Krei demonstrating the portal to the garment.

There were two portals and as something went through one, it will out of the other. They had planned to send a human pilot inside a pod through and out it. Even when anomalies were showing in the scans, Krei still went through with it to show the general that it was safe. But after the pod went in the scientists lost contact with it and the second portal destroyed itself, while the other one became a vortex and began sucking everything in until it was forcibly shut down, trapping the pilot in the space between the portals.

The team's theory of Krei being the masked man grew as they "realized" the reason why Krei had started the fire and stolen Hiro's Microbots, so he could take his technology back, but Yokai turns out to be Professor Robert Callaghan and he escapes with the end of the portal when Baymax had his healthcare chip reasserted into him. After Hiro calms down and the team saw the rest of the footage, they realize why Callaghan wanted it: the pilot was his daughter, Abigail Callaghan and he blamed Krei for her "death" because he sent her into the portal despite knowing that it was unstable.

As Krei introduces his new Krei Tech Building, Callaghan uses the microbots to capture Krei, to put the three parts of the portal together again and to hold it up as the portal starts to suck the building into it. He planned to use the portal to destroy everything that Krei built, before sending him into like he did with Abigail. Hiro was nearly sucked into the portal himself until he was saved by Baymax, he then gets the team to use the portal to their advantage as it takes care of the microbots and slower the number of them. Callaghan is caught, but as the team try to find cover from the portal's growing destruction, Baymax picks up Abigail's life reading within the portal, meaning that she is still alive. Hiro and Baymax go into the portal to save her and discover its void universe, as parts of Krei Tech floating around them. After the two find Abigail and are about to bring her home, Baymax's suit is damaged and uses his rocket fist (with his Healthcare chip clutched in it) to send Hiro and Abigail back, Hiro didn't want to leave Baymax in the void universe as the portal's shield was tearing it apart, but time was running out and it was the only way for them to get Abigail Callaghan back home to their universe. The portal then explodes when the two get out safely through and Abigail is sent to the hospital. Meanwhile, a seemingly regretful Callaghan is arrested and taken away by the police.



  • The portal's demonstration was set to open the film, with "Doctor" Robert Callaghan as its creator, but the directors replaced it with the Bot Fight scene. They thought that it would be better if the audience discovered both the portal and the incident with the Hiro and the team.
    • After the pilot went into the portal in the original layout of the scene, "something" came out of it.
  • The Silent Sparrow alludes to the sparrow of Japanese folklore, where the sparrow is said to be a symbol of unexpected fortune and a reward for kindness. This foreshadows the film's climax of Hiro rescuing Abigail from the portal and unknowingly Baymax's chip because of Baymax's sacrifice.
  • In the Big Hero 6 manga Tadashi was helping Callaghan with the portal so they could save Abigail. When Hiro first discovers the portal, however, Tadashi was sucked into it. To make the portal work Yokai stole the city's power.
    • Like one of the deleted scenes in the film, Callaghan was the portal's creator in the manga.

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