It stars the voices of Ryan Potter, Scott Adsit, Daniel Henney, T.J. Miller, Jamie Chung, Damon Wayans Jr., Genesis Rodriguez, James Cromwell, Maya Rudolph and Alan Tudyk.

The film received positive reviews from critics with praise for its animation, pacing, action sequences, screenplay, entertainment value and emotional weight.

After meeting Tadashi's mentor Professor Robert Callaghan, Hiro applies to the university, impressing the school's showcase with his project: a swarm of microbots that can link together in any configuration using a neural transmitter.

Inside, they discover the microbots being mass-produced by a Kabuki mask-wearing supervillain known as "Yokai", who tries to dispose of Hiro and Baymax, but they narrowly escape.

The group are soon ambushed by Yokai, but they manage to remove their mask and is revealed to actually be Callaghan, who had faked his death using the stolen microbots to shield himself from the blaze.

"Don Hall, Kristina Reed and the entire crew are such amazingly talented people and have such a love for all things Marvel that it's been an absolute blast working with them.

[31] While directing Winnie the Pooh (2011), director Don Hall was scrolling through a Marvel database when he stumbled upon Big Hero 6, a comic he had never heard of before.

[45] Conversely, Lasseter dismissed the idea of a rift between the two companies, and producer Roy Conli stated that Marvel allowed Disney "complete freedom in structuring the story".

[46][47] Disney Animation Studio President Andrew Millstein stated: "Hero is one example of what we've learned over the years and our embracing some of the Pixar DNA.

"[48] Regarding the film's story, Quesada stated, "The relationship between Hiro and his robot has a very Disney flavor to it ... but it's combined with these Marvel heroic arcs.

"[60] Hall stated that the technology "will have potential probably in the medical industry in the future, making robots that are very pliable and gentle and not going to hurt people when they pick them up."

[64] The entire film became much stronger by establishing the relationship between Hiro and Baymax early on, but the filmmakers ended up having to reconstruct "a fair amount of the first act" in order to make that idea work.

[71] Another one named Bonzai was responsible for the creation of the city's 250,000 trees,[72] while a new rendering system called Hyperion offered new illumination possibilities, like light shining through a translucent object (e.g. Baymax's vinyl covering).

[65] Disney, in turn, had to assemble a new super-computing cluster just to handle Hyperion's immense processing demands, which consists of over 2,300 Linux workstations distributed across four data centers (three in Los Angeles and one in San Francisco).

[65] This was all backed by a central storage system with a capacity of five petabytes, which holds all digital assets as well as archival copies of all 54 Disney Animation films.

[74] The post-credits scene was only added to the film in August 2014, late in production, after Hall and his crew went to see Marvel Studios' Guardians of the Galaxy (2014).

[88] For the South Korean release of the film, it was retitled Big Hero, to avoid the impression of being a sequel, and edited to remove indications of the characters' Japanese origin.

Nonetheless, the film caused some online controversy in South Korea, because of small images resembling the Rising Sun Flag in the protagonist's room.

[90] Disney had retained the Japanese elements of the film in mainland China during the pre-release marketing, but used the modified version for the theatrical and Blu-ray/DVD releases as it did in South Korea.

[91] Big Hero 6 was released in the United States by Walt Disney Studios Home Entertainment on Blu-ray and DVD on February 24, 2015.

By grossing over $500 million worldwide, it became the fourth Disney release of 2014 to do so; the other titles being Guardians of the Galaxy, Maleficent, and Captain America: The Winter Soldier.

1 with $14.8 million in China, which is the biggest opening for a Disney and Pixar animated film (breaking Frozen's record)[128] and topped the box office for three consecutive weekends.

[135] Michael O'Sullivan of The Washington Post gave the film 3.5/4 stars, writing that "The real appeal of Big Hero 6 isn't its action.

"[141] Bill Goodykoontz of The Arizona Republic gave the film a positive review, writing, "Directors Don Hall and Chris Williams have made a terrific movie about a boy (Ryan Potter) and his robot friend, who seek answers to a deadly tragedy," calling it an "unexpectedly good treat".

[142] Soren Anderson of The Seattle Times gave the film 3.5 out of 4 stars, saying that "Clever, colorful, fast on its feet, frequently very funny and sweet (but not excessively so), Big Hero 6 mixes its myriad influences into a final product that, while in no way original, is immensely entertaining.

"[143] Michael Rechtshaffen of The Hollywood Reporter gave the film a positive review, saying that "the funny and heartwarming story about the bond between a teen tech geek and a gentle robot represents another can't-miss proposition by Walt Disney Animation Studios.

[146] Rafer Guzmán from Newsday gave the film 3 out of 4 stars, saying that "Marvel plus Disney plus John Lasseter equals an enjoyable jumble of kid-approved action", with "rich, vivid colors and filled with clever details".

One is a soft plastic 10-inch version that includes a series of projected stills from the film on his stomach, which can be changed when the figure's arm is moved, and which emits accompanying sounds.

Deluxe Flying Baymax, which retails for $39.99, depicts the armored version of the character and features lights and sounds that activate at the push of a button.

The other characters from the film, including the other members of team and Professor Callaghan (who is called Yokai) are issued in 4-inch action figures, each of which have eight points of articulation.