The series continues to display his morally ambiguous personality. After Callaghan's defeat and Abigail's rescue, Krei went back to business now somewhat more aware of his actions. Krei is soon attacked by a vengeful Callaghan, but is rescued by Hiro and his friends who became the Big Hero 6 superhero team. Despite this, he has continued in his illustrious career as if nothing happened revealing a morally dubious side. The test went wrong and Abigail was thought lost somewhere in the unknown and since then Krei has been blamed. It is soon revealed that Krei had helped develop a special teleportation device for the government of which Callaghan's daughter, Abigail, was a test pilot to. He is heavily impressed with Hiro's microbot project and ask that his tech be bought by his company, but he is turned down after a stern talking to by Professor Robert Callaghan with whom he had a rough past with. Considered an influential man, Krei is always searching for the next best thing and found it in Hiro Hamada's microbots at SFIT.
Alistair Krei Alistair KreiĪlistair Krei is the self-made CEO of Krei Tech. They in turn, affectionately call her "mom", which she admits is weird. At the end of the series, she adopts Noodle Burger Boy and his robot family as her staff. She is also shown to be heavily oblivious to major events happening throughout the city, usually due to Hiro and his friends stopping her from seeing anything major happening. ĭespite being Hiro's aunt, she acts more like a mother setting him up to have a date with a girl his age and taking pictures of them when they are going to a dance. In season three, she displays some athletic ability revealing that she used to play softball when she was in college, and is also very good at singing. In season two, she starts dating Chief Diego Cruz, whom she had known since high school. She also has never dated or gotten married prior to the events of "Aunt Cass Goes Out" and while she did find Alistair Krei interesting and romantic, she ultimately saw his flaws enough for her to dump him. Though once she does become aware she takes her situation seriously. Cass also displays a ditsy personality that sometimes hinges on ignorance. This is further shown in the episode "Food Fight" where she not only is shown mastering many uncommon dishes with a variety of unfamiliar ingredients, but she is shown to love doing so to challenge herself. The television series expands on her character, depicting her as not only being unaware of her nephew's heroics, but displaying some eccentricities when it comes to cooking and food. Hiro eventually begins attending SFIT much to Cass' happiness and support. Weeks later, Cass tries to cheer Hiro up and get him out of the house, leading into a series of events involving Hiro, Baymax and his friends becoming Big Hero 6, all while Cass remains blissfully unaware. Cass planned on an after party for her nephews and friends, but Tadashi is killed in a fire, devastating her and Hiro. She is present when Hiro presents his microbots at the SFIT showcase and expressed joy at seeing him succeed. She bailed them out of jail after an incident involving bot fighting and regretted the fact that she never picked up a book on parenting. Cass continued to care and love them as if they were her own children though like any other parent she would feel concern and anger whenever they got into any trouble.
Aunt Cass is Hiro and Tadashi's aunt and guardian who was granted custody of them after the death of her sister and brother-in-law.