Mayoi, mysterious yet adorable creatures, begin to appear in San Fransokyo.

Upon discovering Baymax’s ability to detect if a person is lying, Hiro attempts to use him to uncover proof of deceit.

To try to prove Yama is behind a mysterious crime spree, perpetrated by tiny bots, Hiro is drawn back into the illegal world of bot-fighting.

Momakase blackmails Hiro into helping her steal her family's knives from Yama's safe.

Professor Granville becomes increasingly pushy with Big Hero 6 as she helps them figure out a mysterious series of food-related burglaries.

Hiro’s jealousy of Karmi’s internship at Sycorax leads him to intern at Krei Tech.

A new villain, Major Blast, appears in the city and targets Fred.

Big Hero 6 must stop a secret underground racing league.

After the gang goes to a spooky haunted house, Hiro keeps seeing Tadashi around the city and ultimately finds himself face to face with his brother.

Honey Lemon sets out to make Globby human again.

After Fred is attacked by mechanical cobras, he learns that they were actually sent after Heathcliff.

When Aunt Cass sets Hiro up on a date, he begins to wonder if he’s missing out on being a regular kid.

After Aunt Cass nearly discovers Hiro's secret membership in the Big Hero 6, Hiro tries to set her up with someone to distract her.

Karmi posts Big Hero 6 fan fiction, embarrassing Hiro.

Hardlight crashes Karmi’s autograph session.

Nega-Globby takes control of Globby’s body to cause chaos around the city.

Big Hero 6 face their greatest challenge as Obake unleashes his plan on San Fransokyo.

When a monster wreaks havoc in San Fransokyo, Big Hero 6 must go on a real-life monster hunt.

Hiro and Fred enlist Karmi to find out what happened to Orso Knox, the man who was mysteriously turned into a monster.

Evil villain Hardlight challenges the Big Hero 6 team to a real-life video game duel.

When Krei is lost in the old Sycorax building, the heroes must search the abandoned monster factory to find him.

When Big Hero 6 find Mr. Sparkles working at the Pizza Party-torium, he tells them he's decided to leave the world of crime behind.

When Basemax opens a spam email, she gets infected with a virus.

Noodle Burger Boy and the mascots abduct Fred.

In order to recruit child prodigy Rishi Patel, Professor Granville enlists Hiro to give him a tour of SFIT.

4 2 Sing, a famous boy band, decides to be crime fighters and challenge Big Hero 6 to a superhero-off.

Karmi and Hiro team up to help treat someone with genetically engineered parasites.

Globby and Honey Lemon feel guilty about trapping Nega-Globby in the Glop-Vac.

Hiro enlists the help of the team when Granville’s three dogs go missing while under his watch.

Richardson Mole blackmails his way into Big Hero 6.

Hiro switches Baymax’s chip with Mini-Max’s so that Baymax can rescue Mochi.

A low-charged Baymax and Mini-Max join forces with Noodle Burger Boy to save Big Hero 6.

Hiro, Fred, and Baymax follow GoGo into the mysterious Muirahara Woods where they get lost and everything electronic strangely fails including Baymax.

Fred meets the girl of his dreams, Olivia, only to be rejected by her for reasons he doesn’t understand.

When supervillain Baron Von Steamer crashes Fred’s Bro-Tillion, the Big Hero 6 team springs into action.

Go Go reluctantly goes undercover as the co-host of Wendy Wower's television show.

Big Hero 6 responds to Richardson Mole’s every whim when he is made mayor for the day.

Fred's invisibility function on his suit glitches during patrol.

As Hiro tries to find a way to connect to classmate Karmi, Go Go and Fred dive deep into comic book mythology to defeat High Voltage, a mother-daughter supervillain duo.

Hiro and a short-handed Big Hero 6 team attempt to stop Noodle Burger Boy and his new family.