Wasabi is the team's meticulous, cautious, and organized "voice of reason." While he craves structure and order, his deep loyalty and bravery shine through when he balances his careful, professional nature with his dedication to protecting his friends. Wasabi is a cautious and precise student of applied physics who specializes in laser-induced plasma.

Fred is the embodiment of boundless, quirky enthusiasm and imaginative energy, serving as the eccentric heart of the Big Hero 6 team. Often dismissed as a slacker or a professional mascot, he harbors a profound, almost encyclopedic passion for superhero culture and comic books, which drives his unique perspective on the world. Emotionally, Fred is incredibly optimistic, supportive, and fiercely loyal to his friends, frequently using his humor and "chill" demeanor to keep the team's spirits high even in high-pressure scenarios. His appearance reflects his vibrant, laid-back personality; he is usually seen in casual, comfortable clothing—like his signature graphic t-shirts and worn-in sneakers.

Go Go is a sharp, stoic, and fiercely competitive powerhouse whose edgy, punk-inspired aesthetic perfectly matches her lightning-fast, high-tech combat style.

Honey Lemon is a bright, optimistic, and bubbly genius who balances her sweet, sunny disposition with a brilliant scientific mind; she uses her specialized chemical-dispensing purse to create custom solutions on the fly, proving that kindness and intellect are a powerful combination.

Hiro Hamada is a young, incredibly gifted robotics prodigy who, after a personal tragedy, channels his genius intellect into becoming a skilled fighter and a brilliant inventor. He's initially a bit of a slacker, more interested in bot fights than school, but his empathy and desire to protect others drive him to use his technological prowess for good, eventually leading the Big Hero 6 team.

Baymax is a state-of-the-art, highly advanced personal healthcare companion robot created by Tadashi Hamada. Designed with empathy and efficiency in mind, Baymax is programmed to diagnose and treat physical and emotional ailments. He is incredibly loyal, gentle, and possesses a simple, unwavering devotion to his designated patient. Although initially designed for healthcare, Baymax learns and adapts, developing a strong sense of friendship and bravery through his experiences with Hiro and the other members of Big Hero 6, often acting as the team's moral compass and protector. Tadashi, his creator, is sadly deceased.