As of October 2023, there has been no official announcement regarding a "Big Hero 6 2." While there have been discussions about potential sequels and spin-offs, including a Disney+ series titled "Baymax!" that focuses on the character Baymax, a direct sequel has not yet been confirmed. Disney often revisits popular franchises, so it's possible that a follow-up may be considered in the future, but fans should stay tuned for any announcements from Disney.

In "Big Hero 6," the character Hiro Hamada is often interpreted as being on the autism spectrum. He demonstrates traits such as intense focus on his interests, difficulty with social interactions, and a strong emotional connection to his inventions and his brother. While the film does not explicitly label Hiro as having autism, his character resonates with many viewers who see parallels with autism spectrum characteristics. The film highlights his journey of growth, friendship, and coping with loss, emphasizing the importance of support and understanding.

In the movie "Big Hero 6," Tadashi Hamada, Hiro's older brother, is initially believed to be dead after a tragic accident involving a fire at the robotics lab. His death serves as a pivotal moment in the story, motivating Hiro to use his skills in robotics and ultimately form the superhero team. While Tadashi's legacy lives on through his contributions to robotics and the impact he had on Hiro, he does not return to life in the film, and his death remains a significant emotional element of the narrative.

Yes, "Big Hero 6" is one movie. Released by Walt Disney Animation Studios in 2014, it is an animated superhero film inspired by the Marvel comic of the same name. The story follows a young robotics prodigy named Hiro Hamada and his inflatable healthcare companion, Baymax, as they team up with a group of friends to form a superhero team and confront a mysterious villain. The film received critical acclaim for its animation, humor, and emotional depth, winning the Academy Award for Best Animated Feature.