Fred's Bro-Tillion is the fourth episode of Big Hero 6. It premiered on June 10, 2018.
- Baron Von Steamer (debut)
- This episode was released on March 15, 2018, in the United Kingdom before its official US release.
- It is revealed in this episode that Fred's father used to a superhero named Boss Awesome.
- Baymax received a new chip with a dance mode