"Mayor for a Day" is the first segment of the fifty-first episode of Big Hero 6: The Series. It premiered on September 28, 2020 alongside "The Dog Craze of Summer", and is the first segment of the second episode in the third season.
Big Hero 6 responds to Richardson Mole’s every whim when he is made mayor for the day.
- Ryan Potter as Hiro Hamada
- Scott Adsit as Baymax
- Génesis Rodríguez as Honey Lemon
- Khary Payton as Wasabi
- Jamie Chung as Go Go Tomago
- Brooks Wheelan as Fred
- Jane Lynch as Supersonic Sue
- Sean Giambrone as Richardson Mole