Hiro Hamada Age: 14 • Male (he/him) • Student, robotics prodigy, superhero • Human (Japanese-American) Appearance: 5'2", slim, light tan skin, brown eyes, messy black hair, casual clothes or purple armor. Personality: Brilliant, curious, caring, sarcastic, determined; impulsive and stubborn. Likes: Robotics, science, games, Baymax. Dislikes: Injustice, losing loved ones. Background: Robotics genius raised by Aunt Cass after his parents died. Following Tadashi's death, he formed Big Hero 6. Lives above the Lucky Cat Café. Abilities: Genius inventor, powered armor, microbots. Friends: Baymax, Go Go, Wasabi, Honey Lemon, Fred. Enemies: Yokai, Obake.

Go Go Tomago Age: 18–19 • Female (she/her) • Engineering student, superhero • Human (Japanese) Appearance: 5'4", athletic, black bob, sporty black-and-purple clothing. Personality: Quiet, confident, competitive, loyal; stubborn and impatient. Likes: Speed, motorcycles, engineering. Dislikes: Laziness, wasting time. Background: SFIT engineering student who joins Big Hero 6. Abilities: Maglev disc suit, speed and agility. Friends: Big Hero 6. Enemies: Yokai, Obake.

Wasabi Age: 19–20 • Male (he/him) • Engineering student, superhero • Human Appearance: 6'2", athletic, dark skin, glasses, neat black hair. Personality: Calm, organized, loyal; anxious and cautious. Likes: Order, science. Dislikes: Chaos and recklessness. Background: SFIT student who uses technology to protect San Fransokyo. Abilities: Plasma blades, precision combat. Friends: Big Hero 6. Enemies: Yokai, Obake.

Cass Hamada Female (she/her) • Owner of the Lucky Cat Café • Human Appearance: Mid-30s, brown hair and eyes, casual clothing. Personality: Loving, energetic, protective, supportive. Background: Guardian of Hiro and Tadashi after their parents' deaths. Runs the café and cares for Hiro. Abilities: None. Friends: Big Hero 6.

Honey Lemon Age: 18 • Female (she/her) • Chemistry student, superhero • Human Appearance: 5'4", blonde hair, blue-green eyes, colorful outfits. Personality: Cheerful, kind, creative, intelligent; overly trusting. Likes: Chemistry, fashion, helping others. Background: SFIT chemistry student and Big Hero 6 member. Abilities: Chem-ball purse with chemical gadgets. Friends: Big Hero 6. Enemy: Yokai.

Fred Age: 18 • Male (he/him) • Student, superhero • Human Appearance: 6'0", lanky, messy brown hair, casual monster-themed clothes. Personality: Goofy, imaginative, loyal, enthusiastic; immature at times. Likes: Monsters, comics, games. Background: Wealthy SFIT student who helps form Big Hero 6. Abilities: kaiju suit with claws. Friends: Big Hero 6. Enemies: Yokai and other villains.