Fred answers an email that says he won a prize. He follows it and it turns out to be a trap by Noodle Burger Boy and his family who create a robot duplicate of Fred and send him out in the hopes of finding Big Hero 6's base and blowing it up. The rest of the team comically fail to recognize that Fred is not Fred as the robots get no closer to their goal. Eventually, El Fuego attacks a bank and the team fight him. When Noodle Burger Boy, in robot Fred's body, is about to be destroyed, the other robots fight El Fuego. Fred manages to escape and joins up to out Noodle Fred. The robots escape as the team come together.
s03e01 - The Hyper-potamus Pizza-Party-torium
s03e02 - Mayor for a Day
s03e03 - The Dog Craze of Summer
s03e04 - Trading Chips
s03e05 - Mini Noodle Burger Max
s03e06 - A Friendly Face
s03e07 - Big Chibi 6
s03e08 - Cobra and Mongoose
s03e09 - Better Off Fred
s03e10 - Big Hero Battle
s03e11 - Go Go the Wooweroo
s03e12 - The New Nega-Globby
s03e13 - De-Based
s03e14 - The MiSFIT
s03e15 - Return to Sycorax
s03e16 - A Fresh Sparkles
s03e17 - Noodle Burger Ploy
s03e18 - Krei-oke Night
s03e19 - The Mascot Upshot
As the new prodigy at San Fransokyo Institute of Technology, Hiro now faces daunting academic challenges and the social trials of being the little man on campus. Off campus, the stakes are raised for the high-tech heroes as they must protect their city from an array of scientifically enhanced villains.