I love that robot!
~ Krei's comment about Baymax.

Alistair Krei is the former overarching antagonist/main anti-hero of Disney's 2014 animated feature film, Big Hero 6, and a major antagonist of Big Hero 6: The Series.

He is voiced by Alan Tudyk.

History

Big Hero 6 (film)

Krei first appears at the San Fransokyo Institute of Technology convention, where he was conversing with a young inventor about his invention before noticing Hiro's Microbots. He quickly takes interest and attempts to have Hiro sell him the Microbots, but Callaghan intervenes, saying Krei is known to cut corners and subtly manipulates Hiro into refusing Krei's offers. He leaves angry and disappointed. Later, while Hiro was tracking Yokai in the abandoned warehouse and after surviving a car chase from Yokai, he shows his friends a symbol of a bird in a circle which he noticed plastered on a wall of the abandoned warehouse where Callaghan had manufactured the microbots. Hiro shows this symbol to the team after they narrowly escaped a car chase with Yokai. This made Fred believe Alistar Krei was really Yokai, though everyone else dismissed this as it would bring Alistar Krei negative attention and be too risky for his public image.

Once Hiro and the team head off to an island off the coast where Baymax tracks Callaghan's location (having scanned Yokai's body) which turns out to be an abandoned Krei lab. As the team explores the lab, they discover an old computer with the same bird symbol Hiro had seen earlier. It then demonstrates a video of Alistar Krei performing a demonstration of a portal that can be used to teleport. He first uses the general's hat as an example, which was a success and next tried the same thing on a human being, who in this case was Abigail. One of his scientists stated there was a malfunction but he dismissed this and had the scinetists procceed. Unfortunately, the experiment failed as the portal began to malfunction and suck everything in with it, Krei was forced to shut his experiment down and abandon his lab under quarantine.

This incident would also later earn him the wrath of Callaghan, as it was presumed his daughter Abigail, who was the test subject, had died and he blamed Krei as Krei had proceeded with the experiment despite knowing their was malfunctions, indirectly killing her. This made Hiro and the team believe Krei became Yokai in an attempt to steal back his research. However, when they unmask Yokai, they are shocked to see that he is actually Callaghan. After he escapes and Baymax calmed down Hiro, who burst into anger after learning that Callaghan didn't have remorse for killing Tadashi, the team watches the rest of the clip to get some answers, and realize the test subject was Abigail who was Callaghan's daughter and that Callghan was seeking revenge against Krei for the accident.

Callaghan attacks Krei during his latest ceremony as he reveals his attentions to take away everything precious from Krei after he caused the accident that took away his daughter. Krei begs for mercy, saying it was an accident and that he would give Callaghan anything he wanted. However, this only angers Callaghan as he states that he wants his daughter back. Big Hero 6 intercepts Callaghan and attempt to reason with him, acknowledging his loss and how his daughter would not approve his actions. Callaghan for a moment expresses regret, however Krei's cowardice causes Callaghan to resume his plans and pins Krei to a wall while he battles Big Hero 6. Krei is soon freed from the wall and watches as Hiro and Baymax enter the portal to retrieve Abigail and Hiro comes back with Abigail safe at hand.

Krei is last seen opening a showcase hall in Tadashi's honor in the film's credits, apparently in consideration for the young man's sacrifice.

Big Hero 6: The Series

Unfortunately, the incident with Yokai barely humbled Krei as confirmed in the events of TV Series. In fact, his relationship with Big Hero 6 proved to be tense and that Krei's morally questionable methods led to Hiro and co. understood why Callaghan antagonized him to begin with.

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Other Animated Movies
Br'er Rabbit | Toaster | Blanky | Kirby | Lampy | Radio | Jack Skellington | Sally | Zero | Mayor of Halloween Town | Santa Claus | Valiant | Bugsy | Lofty | Toughwood & Tailfeather | Mercury | Victoria | Wing Commander Gutsy | Sergeant Monty | Charles de Girl | Rollo | Samson | Benny | Bridget | Nigel | Larry | Ryan | Blag | Cloak & Camo | Stan & Carmine | Silvermist | Rosetta | Fawn | Iridessa | Bobble and Clank | Terence | Ebenezer Scrooge | Milo | Gribble | Ki | Milo's Mother | Victor Frankenstein | Sparky | Elsa Van Helsing | Dusty Crophopper | Dottie | Skipper Riley | Sparky | El Chupacabra | Vidia | Lizzy | Periwinkle | Zarina | Gruff | Marianne | Dawn | Sunny | Bog King

Sequels
Ethan Dalloway | Cassim | Angelique | Fife | John Rolfe | Uttamatomakkin | Kiara | Kovu | Vitani | Ratso | Murgatroid the Snake | Melody | Tip and Dash | Sylvia Marpole | Scamp | Angel | Baker | Madellaine | Zephyr | Prudence | Jane | Ranjan | Messua | Ranjan's Father | Sparky | Reuben | Thunderbolt | Lars | Ting-Ting, Su, and Mei | Zugor | Cash | Atka | Dixie | Granny Rose | Waylon and Floyd | Queen Athena | Blade Ranger | Maru | Windlifter

Shorts, TV Shows, Comics and Video Games
Pete | Oswald the Lucky Rabbit | Mickey Mouse | Minnie Mouse | Horace Horsecollar | Pluto | Goofy | Donald Duck | Daisy Duck | Ludwig Von Drake | Scrooge McDuck | Huey, Dewey, and Louie | Mortimer Mouse | Chip and Dale | Max Goof | Gladstone Gander | Fethry Duck | Gruffi Gummi | Zummi Gummi | Grammi Gummi | Cubbi Gummi | Sunni Gummi | Tummi Gummi | Gusto Gummi | Cavin | Princess Calla | King Gregor | Sir Tuxford | Sir Gawain | Sir Victor | Princess Marie | Aquarianne | Kessie | Wooster | Nasty Jack | Bruno | Gyro Gearloose | Launchpad McQuack | Webby Vanderquack | Bentina Beakley | April, May and June | Darkwing Duck | Gosalyn Mallard | Monker Muddlefoot | Mona | Morgana Macawber | Pistol Pete | Peg Pete | P.J. | Kit Cloudkicker | Rebecca Cunningham | Chiro | Jinmay | Cassandra | Lance Strongbow | Adira | Varian | Kiera and Catalina | Gabriella | Spot the Killer Whale | Urchin | Sora | Kairi | Riku | Aqua | Terra (Lingering Will) | Ventus | Organization XIII | (Axel | Xion | Roxas | Vexen) | Lea | Ienzo | Zak William Lake | Lauriam | Elrena | Strelitzia | Naminé | Riku Replica | Ansem the Wise | Master Eraqus | Spirit Dream Eaters | Data-Naminé | Data-Riku | Data-Roxas | Data-Sora

See Also
101 Dalmatians Heroes | 20th Century Studios Heroes | A Bug's Life Heroes | Aladdin Heroes | Amphibia Heroes | Atlantis Heroes | Big Hero 6 Heroes | Buena Vista International Heroes | Buzz Lightyear of Star Command Heroes | Cars Heroes | Disney Fairies Heroes | Disney Junior Heroes | Disney Prince | Disney Princesses | DuckTales Heroes | Finding Nemo Heroes | Fish Hooks Heroes | Frozen Heroes | Gargoyles Heroes | Gravity Falls Heroes | Hercules Heroes | Incredibles Heroes | Kim Possible Heroes | Kingdom Hearts Heroes | Lilo & Stitch Heroes | Luca Heroes | Marvel Cinematic Universe Heroes | Milo Murphy's Law Heroes | Monsters, Inc. Heroes | Mulan Heroes | Muppet Heroes | Narnia Heroes | Onward Heroes | Peter Pan Heroes | Phineas and Ferb Heroes | Pirates of the Caribbean Heroes | Pixar Heroes | Ratatouille Heroes | Raya and the Last Dragon Heroes | Recess Heroes | Soul Heroes | Star Wars Heroes | Star vs. the Forces of Evil Heroes | Tarzan Heroes | The Hunchback of Notre Dame Heroes | The Jungle Book Heroes | The Lion King Heroes | The Little Mermaid Heroes | The Owl House Heroes | Toy Story Heroes | Treasure Planet Heroes | Wander Over Yonder Heroes | Winnie the Pooh Heroes | Wreck-It Ralph Heroes | X-Men Movie Heroes | Zootopia Heroes

           Big Hero 6 logo.png Heroes

Big Hero 6
Hiro Hamada | Baymax | Honey Lemon | GoGo Tomago | Wasabi | Fred

Other
Tadashi Hamada | Cass Hamada | Alistair Krei | Abigail Callaghan | Karmi | Professor Granville | Globby | Felony Carl | Mini-Max | Megan Cruz | Chief Diego Cruz

Comics
Big Hero 6 (Hiro Takachiho | Baymax | Honey Lemon | GoGo Tomago | Fredzilla | Wasabi-No-Ginger | Sunfire | Ebon Samurai) | Wolverine | Mariko Yashida

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