"Cobra and Mongoose" is the first segment of the fifty-fourth episode of Big Hero 6: The Series. It premiered on October 26, 2020 alongside "Better Off Fred", and is the first segment of the fifth episode in the third season.
- Ryan Potter as Hiro Hamada
- Scott Adsit as Baymax
- Brooke Wheelan as Fred
- John Michael Higgins as Mini-Max, Game Announcer
- David Shaughnessy as Heathcliff
- Kirby Howell-Baptiste as Cobra
- Zehra Fazal as Basemax
- Some of Heathcliff's personal life is revealed.
- Boss Awesome is shown, but has no speaking lines, most likely due to Stan Lee's passing.
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