Right of Passage (Big Hero 6: The Series)

Right of Passage is the first episode of the fourth season of Big Hero 6: The Series and the sixty-first episode overall. It's also the fourth series' special after "Countdown to Catastrophe", "City of Monsters", and "Legacies".

Synopsis
Callaghan's crimes in San Fransokyo weren't the only incidents to inspire the rise of villains: his tragic death also sparked a mysterious Robin Hood-esque vigilante to not just break out Ian (aka Hardlight), Celine Simard (aka Sirque), and Mel Meyer from prison, but also set their sights on the one true mark; Alistair Krei. But when Big Hero 6 go to confront this vigilante, it was someone they did not expect.

Big Hero 6

 * Hiro Hamada (voiced by Ryan Potter)-The founder and leader of Big Hero 6, and love interest now turned official boyfriend of Karmi. At 18 years of age, he has grown taller, even surpassing Karmi's height by the head, his hair having grown out more at neck's length and brushed down with bangs swept to the side, and his body is bulkier and leaner. As a civilian, he wears a black blazer jacket over a blue dress shirt, light brown slip-on jeans, and mint green sneakers in honor of his brother, Tadashi. As a superhero, he's updated to a black full bodysuit with indigo armor, his gloves are much slimmer with red circles on the palms where the magnets are located, his black and indigo forearm gauntlets are less thicker but more re-inforced to deflect attacks and generate forcefields, and black steel-toed motorcycle boots. Plus, his helmet is retrofitted with the neurotransmitter headband to control his microbots that he keeps in his canteen waistbag, and his bodysuit is updated with Flexible Display Technology to give him more agility and flexibility, making him as fluid like a ninja.
 * Go Go Tomago (voiced by Jamie Chung)-One of the members of Big Hero 6. Her hair has grown out more and less scruffy than it was, and is neatly parted with purple highlights while braided over the left shoulder. As a civilian, she wears a white, purple orchid-printed, hanbok-style halter top with a black leather bolero jacket over it, black choker gloves, dark gray high-waisted, denim pants, and black tall boots with a side zipper and buckle near the edge. As a superhero, she's updated to a full-bodied armor vaguely similar to her Ultra Armor, only her Mag-Lev Disks can detach and reattach from her back, and the ones on her legs fan out into a half circle, forming one Hover Disk.
 * Wasabi (voiced by Khary Payton)-One of the members of Big Hero 6. He trimmed his beard to a French cut, and his dreads have grown out more, now styled into a ponytail. As a civilian, he wears a white, short dress shirt with a sweatvest the same color as his sweater, dark gray trousers, and black dress shoes. As a superhero, his dreads are in a bun tied with a red hairband and retains his black jikatabi boots, only he now wears a Flexible Display Technology Bodysuit under his armor to give him a more ninja-like appearance, and his Plasma Blades are infused with refined titanium Hiro requested to Honey Lemon to fend off Momokase's graphene weapons much easily.
 * Honey Lemon (voiced by Génesis Rodriguez)-One of the members of Big Hero 6. Her hair is styled in a long braid with thick bangs covering her forehead. As a civilian, she wears a sleeveless, misty rose dress with a carnation pink tunic over it, lavender pink leggings, and replaces her platform heels with midwedges for the sake of stopping being called "tall" all the time. As a superhero, she's updated to a black full bodysuit with a lavender armor dress and matching midwedges. Her Chem-Purse is now replaced with a Chem-Waistbag that will provide her mobility for combat.
 * Frederick "Fred" Frederickson IV (voiced by Liam O'Brien)-One of the members of Big Hero 6. He has a more mature, decent, unhunched appearance compared to his unkempt style, and his hair has grown out into a mullet to honor his father's classic lifestyle. As a civilian, he replaces his monster hat with a backwards baseball cap to honor Tadashi, and wears a short blue hoodie with his signature kaiju logo, red long-sleeved shirt, denim trousers, and yellow converse high tops. As a superhero, his battlesuit is a combination of his default and new ultra armor. The material is made with the Flexible Display Technology fabric fused with refined titanium to make the suit water-proof and insulated so that the camouflage ability doesn't short out.
 * Baymax (voiced by Scott Adsit)-Hiro's personal healthcare companion, and the final member of Big Hero 6. His vinyl material is upgraded with fusions of platinum, carbon, and resin, making it tear-proof and bouncy as rubber, and his access port is now hexagon-shaped with six slots instead of four. As a superhero, his battlesuit is a combination of super armor and new ultra armor, giving him more durability even upon impact.

Allies

 * Professor Granville (voiced by CCH Pounder)-The new dean of SFIT, and ally of Big Hero 6. Her hair has grown out more like in her earlier years as a professor, but pulled back in a ponytail with a gold hair clip. As a civilian, she kept her gold necklace, but now wears a black sleeve turtleneck dress with a dark gray pencil skirt, a black belt at the waist, dark gray tights, and black flats. As a superhero, she wears a golden yellow armor dress with chrome yellow sleeves, metallic gold leggings, and golden brown knee-high flats. Her necklace becomes part of her armor resembling a magpie, along with a visor around her head acting as an Egyptian sarcophagus of sorts, and her weapon is a long gold staff with a gold magpie at the top which she utilizes for turning her enemies into gold statues for a short period of time.
 * Karmi (voiced by Minae Noji)-The current intern of the new Sycorax, a love interest now official girlfriend of Hiro, and ally of Big Hero 6. Despite being two years older than Hiro, Karmi's a head shorter than him, and her hair is grown to a knee's length with bangs neatly parted while in a braid and wearing an orange headband. As a civilian, she wears a cream-colored, long-sleeved blouse with the cold shoulder, deep red earrings, red wristbands with yellow beads, orange high-waisted denim skirt, black capri-style leggings, and cream-colored flats. As a superhero, she wears a full black bodysuit with a chrome orange chest armor, gauntlets, and skirt, white forearm gloves, a dark orange belt with a gold hexagon-shaped belt buckle, and chrome orange boots with fronts the same shape as her buckle. Her visor has an electric indigo tint along with a hidden microphone, and her gauntlets are equipped with launchers at the ends of her wrist for her extra-dermal nano-receptors to knock her enemies out unconscious.
 * Wendy Wower (voiced by Erica Lindbeck)-The real scientist who wrote her thesis, a host of her own TV show, "Wendy Wower's Science Hour", and an ally of Big Hero 6. Her hair is grown out more at an elbow's length and dyed in neon green with turquoise streaks, now styled into a braid with curved bangs. After being recognized as the true genius behind her thesis thanks to Trevor, Wendy wears a lavender pink sleeved blouse under an alloy orange jacket with purple trimming, an electric violet skirt with electric purple frills aligning the bottommost hem and six buttons on the top half, electric indigo tights, and electric purple boots with yellow buckle straps and heels. As a superhero, she wears a blue-gray dress with black sleeves and tights, blue-gray boots, and white armor-like tunic with grayish-purple around the shoulders and a yellow belt at the waist, along with gauntlets, greaves, and a helmet like Go Go's to match. The visor on her helmet has an aquamarine tint, and she carries an axe guitar with titanium-fused plasma blades hidden in the body, and a laser gun in the headstock.
 * Mini-Max (voiced by John Michael Higgins)-A tiny robot invented by Hiro to assist Fred, and ally of Big Hero 6. He is the close look-alike of Baymax, but with a head bigger than his body and has blue eyes. Like with Baymax, his new access port has six slots instead of just one. As a superhero, his battlesuit is a combination of super armor and ultra armor like Baymax's, but black with dark blue accents.
 * Megan Cruz (voiced by Aleyse Shannon)-The officer-in-training of SFPD, private eye, and ally of Big Hero 6. Despite being the same age as Hiro, Megan is roughly at Karmi's height by the head, and her hair is grown at a waist's length while styled into a braid with thick bangs curved from the side. As a civilian, she wears a black, long, sleeveless jacket with spring green zipper and stripes over an office green mid-sleeved shirt, light sea green slip-on jeans, and navy blue denim boots with tan heels and toes. As a superhero, she wears a full light blue and dark blue bodysuit, which are the colors of a rookie police officer, with the excess fabric hanging hanging above the knees like a skirt, black gloves, dark gray armor, gauntlets and greaves, and black boots. The dark blue parts of her bodysuit are hexagon-shaped. Her navy blue helmet's visor fades from red on top to blue on the bottom like police lights, and the gauntlets shoot out elastic cuffs to keep the enemies restrained.
 * Roddy Blair (voiced by Nolan North)-The architect of BH6's headquarters and inventor of Basemax, the team's AI. He now has a lean and stocky build, his beard is trimmed with a five o'clock shadow, and his hair has grown out at a shoulder's length. After learning of the team's identities, Roddy now wears long-sleeved overalls with a halfway zipper and having the BH6 logo, which is a blue hexagon with the red number six in the center, a blue cap, dark gray thick gloves, his tool belt, and black boots. Whenever he's not working or when he's teaching his students, Roddy wears his green shirt with a brown hoodie over it, black pants, and dull brown slip-ons.
 * Basemax (voiced by Zelda Williams)-Big Hero 6's AI of their base invented by Roddy Blair. Using the parts for creating Baymax, the Skymaxes, Big Hero 6's gear, and the Bunny Shuttle, she manages to create a robotic body for herself. It is a slender build out of a cobalt blue metal plating that covers her carbon-fiber skeleton to give her a feminine appearance, biomechanical arms and legs to resemble human limbs, and a helmet like Baymax's for the head with a dark cyan screen to project a female human-like face intending to be beautiful. Her "hair" is made of strips of neoprene and vinyl that allows her to change hairstyles in any way she wants. For "clothing", Basemax can materialize titanium from a hexagon embedded in her chest for projecting crystal-based nanoparticles into a suit or a tunic.
 * Olivia Mole (voiced by Elizabeth Gillies)-Fred's girlfriend and ally of Big Hero 6. She no longer wears her nose ring or glasses, replaced her cat hat with a shocking pink headband, and her hair has grown out at a shoulder's length. As a civilian, she wears a hot fuchsia bare-shouldered, short-sleeved blouse with a vivid sky blue strapless, vest-like crop top with three hot pink buttons over it and Capri blue bunnies on the left corner, vivid sky blue ruffled miniskirt, hot pink leggings, and Capri blue, mid-thigh, heeled boots with light blue ribbons tied around the edges. As a superhero, she wears a black dress over an azure bodysuit with purple thin stripes, and black gloves and boots. Her hot pink chest armor has a cyan powerline in the back that channels electricity to her gauntlets for generating energy orbs, as well as her greaves for cyclonic lightning, and her helmet's visor has a pink tint like her glasses.
 * Rishi Patel (voiced by Zeno Robinson)-A new student who enrolled in SFIT with hacking capabilities, and an ally of Big Hero 6. At 15 years old, he's grown to Karmi's previous height, and his hair is at a neck's length, though somewhat scruffy. As a civilian, he wears a dark green turtleneck under a light gray short-sleeved hoodie with the SFIT logo in the center, dark blue denim trousers, and black sneakers with gray soles and toes. As a superhero, he wears a white bodysuit with pale green armor, matching helmet with pale blue visor, and pale green gloves and boots. His gauntlets allow him to summon a tablet with a wave of his hands to get a layout of any building and its security system, and his greaves can summon a hoverboard when he jumps mid-air.
 * Judy (voiced by Idina Menzel)-The former assistant at Krei Tech, now made supervisor for Big Hero 6. Her hair grew out in a pixie bob style with thick fringes parted from the left, and no longer wears her glasses. After her former boss has been arrested due to criminating evidence in his computer system, Judy wears a black dress shirt with the sleeves rolled up under gray rompers, and black boots. When working at BH6's base of operations, she wears a denim lab coat with the team's logo.
 * Dibs/Globby (voiced by Alex Hirsch)-The formerly sub-par villain now turned superhero and ally of Big Hero 6. After being turned back into a human by one of Kumotome's chemically fused "web balls", Dibs wears a beige trenchcoat over his olive shirt, khaki-colored trousers, and black dress shoes. His curly hair can be seen under his dark gray fedora, and he wears black shades to keep up his cover.
 * Sara (voiced by Jordin Sparks)-The former manager of Noodle Burger and Hyper-Potamus Pizza-Party-Torium, now made assistant manager for Lucky Cat Café, and ally of Big Hero 6. Her hair has grown longer than her previous appearance, now having curls by her ears, and pulled back with a sakura hair clip. As a civilian, she wears her signature uniform, consisting of a white kimono-style blouse with black trimming and sash, and orange splotches, black skintight jeans, and red flats. As a superhero, she wears a suit and armor similar to Go Go's, only light blue for the armor and carmine with with silver lining for the bodysuit, along with solid light projectors on the gauntlets for materializing any choice of weapons, and photon powerlines on the greaves to give her speed that matches Go Go's own. Her visor has dark red tint, but having digital screening that change her expression.

Robots

 * Noodle Burger Boy (voiced by Lucas Grabeel)-The former mascot of the Noodle Burger restaurant, now a doorman for Lucky Cat Café. He kept his shoes, but replaces his red overalls with a red kimono-style shirt with white trimming and sash with a cat belt buckle, and black pants.
 * Skymax (voiced by Dee Bradley Baker)-The delivery bots for Big Hero 6, now messengers to their allies. Thanks to the modifications done by Hiro, the robots now have mag-lev systems to replace the rocket boosters, making them silent and stealthy in the air.
 * Hyper-Potamus (voiced by Ariana Grande)-The former mascot of Hyper-Potamus Pizza-Party-Torium, now a barista of Lucky Cat Café. She kept her kimono-style look, only the colors are repainted to suit the theme of the café; the top is black with white trimming and red sash with a cat belt buckle, along with a cat hair clip, and white pants.
 * Hangry Panda (voiced by Shelley Longworth)-The former mascot of the San Fransokyo Zoo's Snack Shack, now a waitress of Lucky Cat Café. Her zookeeper hat is replaced with a waitress hat in white with black trimming and a cat decoration, as well as her vest with a white cheongsam dress with cherry blossom prints.
 * Crushroom (voiced by Jasmine Guy)-The former mascot of Vegan-Nam Café, now a dishwasher of Lucky Cat Café. She kept her sandals, but replaces her tank top with a black kimono-style blouse with red trimming and sash with a cat belt buckle, and red capris. She also has on an apron like Cass's.
 * Bunny Shuttle (voiced by Kelly Sheridan)-The self-driving vehicular AI designed by Honey Lemon and invented by Hiro. The interior of Bunny Shuttle is given newer additions; eighteen seats surrounding a tabletop touchscreen computer so that Basemax can send information to the team on the villains' location.
 * Biomax (voiced by Rebecca Shoichet)-Karmi's biological and ecological robotic companion invented by Hiro as a gift for her comeback to San Fransokyo, and an ally of Big Hero 6. Like Baymax, her body is made of a carbon-fiber skeleton, but is covered in chromium-fused aluminum plating to give her a feminine appearance, and she is at Karmi's height exactly. She also has biomechanical arms and legs to resemble human limbs, and a dome-shaped head with a hexagon face like Basemax's. Her "clothing" made of biodegradable fabrics like polyester, vinyl, neoprene, nylon, and carbon-fiber that is easily repairable through crystal-based nanotech.

Villains

 * Abigail Callaghan/Kumotome (voiced by Cherami Leigh Khuen)-The long-lost daughter of late Robert Callaghan, former test pilot of Krei Tech, and the mastermind of a prison breakout. Her hair grew out at an elbow's length and styled into a braid over her left shoulder with thick bangs curved from the side and a lock framing her face. As a civilian, she wears a black sleeved hoodie with cyan lining, dark gray skin-tight jeans, and black hi-tops with white laces. There's a black Flexible Display Technology Bodysuit hidden underneath her hoodie. As Kumotome, she wears a white, spider-themed, full bodysuit with black covering her torso and upper ribcage in a swimsuit manner, along with magenta underarms, a white hoodie with insides the same way, a hooded mask with cyan lenses outlined in magenta, and tall, black boots with a triangular front and cyan soles. There's also an imprint of a cyan golden orb weaver spider on the back of her suit.
 * Mel Meyer (Corey Burton)-The inventor of Flexible Display Technology fabrics and former employee of Krei Tech, now supervisor of Kumotome's team. He grew a beard before trimming it to a French cut, and his hair is grown out curly and luscious. He wore an orange prison jumpsuit when he was arrested, but after an emergency release, he was given a new set of clothes while wearing his tan dress shirt and brown tie; a black trenchcoat with a belt tied around his waist, dark gray trousers, and black dress shoes.
 * Ian/Hardlight (voiced by Ryan O'Flanagan)-The scientist who specializes in force fields, former employee of Krei Tech, and the gamer-based supervillain who's now partnered with Kumotome. His beard is shaved, but his hair remains scraggly yet more unkempt, and he no longer wears his glasses. After an emergency release, he wears an ultra armor similar to Big Hero 6's new ones, only it's black with glowing dark red-magenta accents, and he discards his cloak for a dark purple hooded armor tunic with glowing pink trimmings, but kept his helmet with a black screen. Both of his gauntlets power his suit as he now generates 3D solid light forcefields and weapons of his own choice, while also summoning creatures of BH6's pasts.
 * Celine Simard/Sirque (voiced by Emma Watson)-The circus acrobat thief and former professional physicist, now a member of Kumotome's team. She no longer wears red streaks, and her hair is grown out more, but tapered down at a neck's length with thick bangs curved from the left. After an emergency release from prison, she now wears a white V-neck "animatard" with the neck, collar, and legs being red, and her whole torso being black, white gloves, a red beaded belt, and white ballet flats. She also wears a butterfly-shaped eye mask that matches her animatard. The fibers of her outfit are made from the cells of certain animals like wildcats (cheetahs, serval, caracal), snakes, lemurs, and foxes to give agility, flexibility, and even superhuman strength to enhance her acrobatics without the use of Portal Magnets.

Others

 * Punk Bot Fighter AKA Regina (voiced by Alanna Masterson)-The young bot fighter who lost to Yama, participated in the Food Fight competition and Bot Fights, and was frozen by Honey Lemon's chem balls, now an informant for Big Hero 6. Her hair grew at a shoulder's length, now dyed in telemagenta with steel pink streaks, and she no longer wears dark eyeshadow. With the Bot Fights shut down after Yama was still in jail since an emergency release was issued for the other inmates, she wears a black, mid-sleeved dress, sky magenta pants, and black lace-up boots with steel toes and heel caps.
 * Aunt Cass (voiced by Kath Soucie)-The owner of Lucky Cat Café, nephew of Hiro and late Tadashi, and surrogate mother of Noodle Burger Boy, Hyper-Potamus, Hangry Panda, and Crushroom. Her hair has grown further past the shoulders, and clipped with a Maneki-Neko hair clip. Between working in the café and hiring new employees, Cass now wears mid-sleeved, V-neck minidress with a mint-colored, sleeveless tunic over it to honor his oldest nephew, denim capri-style leggings, and red slip-on converse shoes with white soles. Her real silver-turquoise necklace is replaced by a beaded turquoise necklace with a silver cat pendant, which has a built-in camera lens in the center, and a hidden microphone in the back for listening to faint audio.
 * Heathcliff (voiced by David Shaughnessy)-The Fredericksons' butler, a former spy, and ally of Big Hero 6. His scalp has somewhat of a 5 o'clock shadow around the crown thanks to Honey Lemon's natural hair stimulant pomade, giving the hair a little salt n' pepper effect. While maintaining his cover as a civilian, he wears a black trenchcoat over his tuxedo, a dark gray fedora on his head, thick-framed sunglasses, light gray gloves, black trousers, and spat-styled calf boots.
 * Momokase (voiced by Naoko Mori)-The official, world-renowned professional chef, master thief, and owner of her own restaurant, Sapphire Rose. Her hair grew out at a shoulder's length and styled into a low bun with bangs neatly parted, but kept her blue streaks. After the generous donation rewarded by Abigail Callaghan, Momokase wears a dark blue dress with a black pencil skirt under a black blazer, dark blue pantyhose tights, and black heels. As a thief, her hair is let down and she wears an outfit similar to the Mad Jacks; a dark blue, black, and grey armor. She kept her black gloves, belt, and boots, but discards her mask for a dark blue visor with a comm-link, and her graphene blades are concealed in her gauntlets.
 * High Voltage (Katy Mixon as Barb, Marÿke Hendrikse as Juniper)-The now-reformed mother-daughter duo. They no longer wear makeup, colored dyes, and jewelry, but have their hair styled differently; Barb wears hers in a small ponytail, and Juniper's is smooth and tapered down with a purple headband. After their emergency release from prison and finally redeemed themselves, Barb wears a cream-colored dress with an ivory cardigan, beige pants, and seashell white loafers, while Juniper wears a hot pink dress with a black, long-sleeved crop top over it, a black belt with a pocket at the waist, purple capri-style leggings, and black heeled boots with hot pink buckle straps and a gold side zipper.
 * 4 2 Sing (Nichkhun Horvejkul as Dae, John Kim as Hyun-Ki, Jae Park as Kwang-Sun, Leonardo Nam as Ye Joon)-The so-called crime-fighting boy band, which is also two sets of twins. Dae now has auburn highlights while his twin brother Hyun-Ki has blond highlights, and Ye Joon has his hair in a gradient style while Kwang-Sun has lighter shade with purple tips like his brother's. While making a comeback tour in San Fransokyo before being set up for an arrest, the boy band had on a new set of clothes; Dae wore a white, sleeved turtleneck with a pink vest over it underneath a white, sleeved, double-breasted, swallow-tailed tailcoat with pink interior, cuffs, and a pair of six horizontal stitched buttons, white gloves, black skin-tight, slip-on jeans, and pink knee boots, while Hyun-Ki wears the same outfit but with yellow attributes, and Ye Joon wears a white dress shirt with a green collared vest over it underneath a white tail jacket with green interior, cuffs and diamond-shaped brooch fastened at the collar, green gloves, white skin-tight, slip-on jeans, and green riding boots, while Kwang-Sun wears the same outfit but with blue attributes.
 * Liv Amara (voiced by Mara Wilson)-The self-made billionaire, founder, and current head of the new biotech company Sycorax after her clone's (Diane) downfall, an old friend of Grace Granville, a true mentor of Karmi, and an ally of Big Hero 6. Her hair is neatly parted with curls and put up into a ponytail with a sea green hairband. After making a new start with her company (while in a relationship with her new assistant, Chris), Liv wears a spring green dress with a deep sky blue cardigan over it, light green tights, and dark cyan heels to symbolize her comeback.
 * Chris (voiced by Ben Feldman)-The genetically engineered assistant of Sycorax created by Diane now an assistant to Liv, whom he's in a relationship with, and an ally of Big Hero 6. His hair is grown out and neatly combed down with thick fringes parted from the left. After an emergency release from prison and having witnessed a tragic incident of his former boss, Chris wears a pale blue T-shirt with a white, short-sleeved dress shirt over it, blue-gray trousers, and navy blue sneakers.
 * Richardson Mole (voiced by Jonah Hill)-Comic book enthusiast, Olivia's cousin, owner of Richardson's Rare Comics, and Fred's long-time rival. Thanks to Stu's gym lessons, Bolton's eating tips, and Juniper's "disciplinary shocks", Richardson is less chubby than his first appearance for he has a stock-built, lean body and has grown to Hiro's previous height. Before and after losing his comic book shop, he wears an off-white T-shirt with a black sleeveless hoodie over it, dark green capris, and black converse shoes with white soles.
 * Trina (voiced by Emily Hall)-The robotic thief created by Obake posing as a Bot Fighter, the surrogate sister of Noodle Burger Boy, and a love interest of Alex Miromoto. After transferring her consciousness into Diane's body, the latter's hair color turned from blonde to auburn and eye color from hazel to light blue, killing the clone in the process. Despite being Hiro's age, she is at Megan's height. Her civilian attire is a steel blue dress with an electric purple sleeved bolero jacket over it, baby pink, fingerless gloves, slate blue leggings, and tall, heeled dark purple boots with white soles and edges. She also wears a belt made from the parts of her robots to symbolize her redemption from Bot Fighting and the new start of her life after Obake.
 * Felony Carl (voiced by Diedrich Bader)-The ex-con living in the same neighborhood as Go Go, a boyfriend of Dibs, and an ally of Big Hero 6. He kept his red headband and cleaned up with having to remove his unibrow and combing his hair back in a swept position. After learning about the team's identities, Carl wears the same outfit as Roddy, only having purple goo splotches all over to represent his feelings for Dibs.
 * Yum LaBouché (voiced by Alton Brown)-The ringmaster of Food Fight, also a connoisseur of fine foods, and a love interest of Mayor Saito. His hair is now styled into a mullet, but kept his red glasses. After retiring from the food competition, he wears a deep red blazer over his white dress shirt, black trousers, and white shoes with red stripes across the top.
 * Bolton Gramercy (voiced by Gordon Ramsay)-The top celebrity chef who competed in the Food Fight competition until losing to Cass, and the secret romantic partner of Simone Dupree/Cobra. His hair is combed back with a small forelock dangling on the left side of his face. After having been hired by Momokase, Bolton wears a black turtleneck under a gray blazer, dark gray skin-tight jeans, and brown ankle boots.
 * Alistair Krei (voiced by Alan Tudyk)-The high-profiled, wealthy, and ambitious CEO of his own company, Krei Tech. His hair is gelled to give it a sheen and voluminous look. After his title has been taken away and been arrested for the long-time crimes since Silent Sparrow, he wears an orange prison jumpsuit, and his hair is disheveled and unkempt due to the loss of his business.
 * Orso Knox (voiced by Fred Tatasciore)-The current investor for the new Sycorax, a William Shakespeare fanatic, and the new English and Literature instructor of SFIT. Like with Heathcliff, his scalp has somewhat of a 5 o'clock shadow around the crown thanks to Honey Lemon's natural hair stimulant pomade, giving it a salt 'n pepper effect. As the professor of SFIT, he wears his white dress shirt with a deep blue vest over it, light brown trousers, and brown ankle boots.
 * Chief Diego Cruz (voiced by Nestor Carbonell)-The head of SFPD, now retired from the force, and father of Megan Cruz. His hair is a lighter shade than his daughter's with a graying streak, and he has shaved his beard and mustache to a neat trim. Despite not being on the force, he wears his white shirt with a dark blue sweater over it, light gray pants, and navy blue sneakers with white soles and toes. There is a Kevlar vest hidden under his sweater for protection.
 * Mayor Saito (voiced by Jeanne Sakata)-The mayor of San Fransokyo, and a love interest of Yum LaBouché. Her hair is styled into a bun with a sakura hair comb. She wears an ice blue dress with a teal skirt under a dark cyan blazer, black pantyhose tights, and verdegris flats.
 * Bluff Dunder (voiced by John DiMaggio)-The former news anchor of San Fransokyo's 7 News network. He has shaved his beard, but kept his glasses. After being set up for an arrest on writing scandalous stories, he wears an orange prison jumpsuit and his hair is shaggy and unkempt.
 * Duff Dunder (voiced by Brian Dobson)-The retired news host of a TV news show called Channel 9 News Couch in the 1970s. His hair is graying, and he has wrinkles under his eyes. Since his retirement, he wears a beige dress shirt, light blue pants, and white shoes.
 * Supersonic Stu (voiced by Matt Hill)-The now-reformed roller-derby villain, grandson of late Supersonic Sue, and boyfriend of Juniper. His hair is cut to reveal his eyes and he no longer wears a bandaid on his face. After choosing to redeem himself from crime while his grandmother serves prison (before her death), Stu wears a black letterman jacket with the SFIT logo on the right side and scarlet trimming over a red tank shirt with v-shaped yellow and orange stripes over the chest, red pants with black on the front, back and insides, and black shoes with a red stripe. There's a small scar on the right side of his neck where one of Karmi's extra-thermal nano-receptors was placed to induce sleep and anesthesis for treatment on the concussions he has suffered from when he broke his grandmother out of prison, allowing newer microorganisms invented by Liv and Karmi called "parazymes" to repair damages to the brain and skull caused by head impact and induce memory repair and improvement, but die out when the process is complete.
 * Nedd Ludd (voiced by Jon Rudnitsky)-The former "real estate king" now forest guardian, the "Hibagon" of the Muirahara Woods, a natural remedy and herbal mixologist, and a love interest of Momokase. His beard is shaved and his eyebrows are trimmed and threaded, but his hair has grown past the waist and kept in an untamed state while tied with two brown bands. He wears a sleeveless, khaki-colored turtleneck, forest green bandage-like wristbands, tawny pants, a tan-colored multi-purpose belt, and brown ankle-strap sandals. After Abigail had "borrowed" equipment from Sycorax to genetically engineer superhuman strength, agility, and enhanced senses into him without the need of a biochip, Ned wears a pale brown and hunter green battlesuit that is a combination of forest armor and new ultra armor like BH6's, only with a forest green hoodie and a brown mask, and there's a hidden ear mic he uses for communication. With the help of Bessie's cubs, Ned's wooden stick is now a black-cobalt staff with a wrench head holding a neon green hexagon-shaped gear at the top for emitting EMP shockwaves, and a curved arch on the end resembling a fish hook.
 * Cobra (voiced by Kirby Howell-Baptiste)-The notorious thief who steals technology from around the world, an adversary of Heathcliff, and the secret romantic partner of Bolton Gramercy. Her hair is less frizzled and styled into a ponytail resembling a snake's body with bangs sideswept like a cobra's hood, and hides her headband neurotransmitter with a black beret. As Simone Dupree, she wears a gray, V-neck blouse with a layered frill collar under a black vest with green trimmings, red scarf, gloves, and skin-tight jeans, a black belt with a cobra belt buckle, and tall, heeled black boots with green heels. As a thief, her hair is let down with her neurotransmitter headband, and wears an outfit similar to Momokase's; a dark green, black and gray armor, but with her cobra whip that she wears like a belt, and a dark green visor with a comm-link.
 * Yama (voiced by Paul Briggs)-The ultimate Bot-Fighting champion, mob boss of Good Luck Alley, a student of samba classes, and a romantic partner of the Bot Fight Ringleader. His hair is styled in a top knot with a red hairband, grew a neatly, thick beard, and his time in prison allowed him to trim down his weight and give his body a stocky yet toned build. He wears a dark blue and yellow kimono-style shirt with a black hoodie over it and dark blue pants, but his civilian outfit hidden under his orange prison jumpsuit while conspiring with his other partner-in-crime, El Fuego.
 * El Fuego (voiced by Horatio Sanz)-The former mech wrestler now turned criminal, and a partner-in-crime of Yama. He grew a brown beard, and his hair is grown out into a short mullet. He wears a helmet that is the same design as his mask, and a battlesuit that is similar to BH6's new ultra armor and his mecha suit with the gauntlets retrofitted with flame throwers.
 * Mad Jacks (Rob Riggle for "Greg" Jack, Kevin Michael Richardson for second Jack, and Kerri Kenney for Jaq)-A formerly professional group of high-tech mercenaries with a peculiar extreme way of operating, now hosts of a kids' show, Bright Lights, Loud Noises. Two male Jacks have since shaved their beards with "Greg" Jack having grown out his hair, while Jaq grew hers out and styled into a low ponytail. After making a clean slate from their alliance with Obake, Greg and Jack are wearing white T-shirts, denim pants, and white shoes, while Jaq wears a pale blue T-shirt with denim overalls that has the show's logo, a black and red baseball cap worn backwards, and light brown boots.
 * Sayaka (voiced by Awkwafina)-One of Cass's customers who now works at Lucky Cat Café as a beverage mixologist and bartender. Her hair is styled in a bun with a red hairband and clipped with a Maneki-Neko hair clip. After being hired by Cass and Sara, her uniform is a white kimono-style blouse with black trimming and sash, and orange splotches, black skintight jeans, and white flats with a pink bellflower on the toes.
 * Gus (voiced by Brooks Wheelan)-The former professional Bot Fighter who got framed by Trina, now the maître d' for Momokase's restaurant, and a love interest of Regina. His hair is less spiked than it was but more tousled compared to Hiro's, and he gave his face a clean shave for a more decent appearance. After being hired by Momokase, his uniform is a black kimono-style shirt with blue trimming and sash, blue pants, and black shoes.
 * Marys Iosama (voiced by Kate Eastman)-A new student who enrolled in SFIT with engineering and cyber capabilities, a love interest of Rishi, and an ally of Big Hero 6. She has light brown hair at an elbow's length tied in a braid over her left shoulder with thick bangs curved from the left, green eyes, fair skin, and red cat's eye glasses over the eyes. Despite being the same age as Rishi, she is a head taller than Hiro's previous height. As a civilian, she wears a neon green short-sleeved minidress with pastel green edges, collar, and ruffled cravat around the neck, lime green, elbow-length, fingerless gloves with bright green edges, dark pink scarf-like belt at the waist, pastel green leggings, and light green, heeled boots with neon green soles, edges, and ankle strips. There's a hexagon-shaped wristwatch on her left wrist that she uses for changing into her superhero form. As a superhero, she wears a carnation pink full bodysuit with amaranth pink collar, arms, and legs, and a cyclamen-colored torso and hoodie, rose pink chest armor, gauntlets and greaves, and orchid pink gloves, skirt, and boots. Her rose pink visor has a lavender pink tint, and her gauntlets can produce energy fields, as well as project solid light wings on her back with a swipe of her hands.
 * Alex Miromoto (voiced by Alex Pettyfer)-The thieving apprentice of Momokase, genius teen prodigy, known by a few as the Silver Shinobi, and a love interest of Trina. He has very short brown hair in a bob cut with thick fringes parted from the left, brown eyes, fair skin, and is half British-half Japanese with an Old English accent. He is also the same age and height as Hiro. As a civilian, he wears a black biker jacket over a light gray, O-neck long sleeve shirt, dark gray skin-tight jeans, a brown belt with a silver three-toed dragon claw belt buckle, and black motorcycle boots. As a thief, he wears a dark gray tunic under a short-sleeved, silver cobalt shirt with a dark gray hooded cowl, a silver half-face face mask, black gloves, a silver cobalt belt with a gray belt buckle, dark gray pants, and black knee boots. His belt is really a disguised kusarigama-manriki chain with a graphene-fused plasma blade on the end, and the chain itself has an infinite reach, capable of grappling onto objects further away.
 * Eric Knox (voiced by Freddie Highmore)-A nephew of Orso Knox, a writer of his own mystery novels, music, and poetry, a steampunk enthusiast, a love interest of Megan Cruz, and an ally of Big Hero 6. He has light tan skin that is the color of light mocha, medium-length black hair with thick bangs curved from the side and copper-colored streaks, blue eyes like his uncle, and is the same height and age as Hiro. As a civilian, he wears a beige long-sleeved turtleneck with a short-sleeved, steampunk-esque argyle hoodie in black, blue, and copper over it, along with a cobalt blue jacket with bronze lining and three black buckle straps on the sleeves and shoulders, khaki-colored, skin-tight, slip-on jeans, a triple-wrapped, metal-studded black belt with a bronze cogwheel buckle, and steampunk spat calf boots. As a superhero, he wears a black suit of armor with a bronze metallic tunic, copper gauntlets and greaves, and cobalt blue helmet, belt, gloves, and boots. The visor of his helmet has a slate blue tint, his boots have rocket thrusters embedded in the soles for emitting steam, and he is equipped with a titanium-fused plasma double sided axe that is hinged in the middle, letting him fold it in half and place it behind his back when not in use.

Deceased

 * Robert Callaghan/Yokai-The former professor who enrolled Hiro into SFIT after the showcase, stole his neurotransmitter headband and microbots, and plotted revenge against Alistair Krei for the "loss" of Abigail until he was arrested for his crimes after seeing his daughter alive and rescued from the portal, but he eventually committed suicide in his own cell. His hair is thinning during his time in prison, and his face showed wrinkles upon aging.
 * Di Amara (voiced by Lucy Taylor)-The clone posing as her creator, Liv, to run Sycorax in her absence to find a cure, a mad biotech scientist who transforms certain people into monsters through coercion, genetically engineered Chris as the perfect assistant, and created monsters with the use of animal and plant DNA through a monster maker in her lab's sublevel until her and Chris's arrest were made, but she is eventually killed when Trina transferred her consciousness into Diane's body. Her hair is disheveled like her creator after waking up from cryostasis, and she has a weary demeanor after being put into a heavily secure cell with Chris before his release. She wears a long short-sleeved orange prison jumpsuit with a white shirt underneath. After Trina gained a new body, Di's hair and eyes changed colors and her clothes are torn, killing the clone in the process.
 * Nega-Globby (voiced by Rob Rackstraw)-The chemical mutant created by Di Amara used from Globby's body substance, and a friend of Richardson Mole until the latter's loss of his comic book store and the goop monster is reduced to a lifeless puddle by Kumotome's web ball, which cuts off Dibs/Globby's psychic link to him.
 * Baron Von Steamer (voiced by Jeff Bennett)-The steampunk-esque adversary of Fred's father, Frederick Frederickson III AKA Boss Awesome, a villainous rival of Supersonic Sue, and an old-fashioned cyborg with certain parts of his body made of steam-powered components. After being arrested, his mechanical arm was confiscated, and he had an eye patch over where his robotic eye used to be. While wearing his prison jumpsuit, his sleeve is rolled up to a stub where his right arm is missing, and he kept his steam gun hidden in his shirt.
 * Supersonic Sue
 * Mr. Sparkles

Minor

 * Trevor Trengrove
 * Bob Aken/Obake