Yokai reveal
"Pro... Professor Callaghan?"

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Use that brain of yours
"Use that big brain of yours to think your way out."

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Hiro's Laptop
"Countdown to Catastrophe needs some upgrades."
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Countdown to Catastrophe is the three-part Season 1 finale of Big Hero 6: The Series. It premiered on October 13, 2018, and is collective the twenty-second, third and fourth episode.


Big Hero 6 face their greatest challenge as Obake unleashes his plan on San Fransokyo.


This section needs expanding.

In the final scene, Hiro and Baymax look for Obake underwater. Baymax says he still doesn't detect his body, but Hiro says it's impossible for him to have survived. However, Baymax reminds Hiro that, like he had said, "nothing is impossible". As they search for him, Obake's chip is shown at the bottom of the sea with no damage.


Main CastEdit

Supporting CastEdit




  • Baymax is shown as evil again, something that first happened in the film.
  • Young Obake had been shown in previous episodes, but it was officially confirmed to be him in this episode.
  • For the first time in the series, the episode's name is shown in the intro.


ve Episode Guide
Season 1
"Baymax Returns" • "Issue 188" • "Big Roommates 2" • "Fred's Bro-Tillion" • "Food Fight" • "Muirahara Woods" • "Failure Mode" • "Aunt Cass Goes Out" • "The Impatient Patient" • "Mr. Sparkles Loses His Sparkle" • "Killer App" • "Small Hiro One" • "Kentucky Kaiju" • "Rivalry Weak" • "Fan Friction" • "Mini-Max" • "Big Hero 7" • "Big Problem" • "Steamer's Revenge" • "The Bot Fighter" • "Obake Yashiki" • "Countdown to Catastrophe"
Season 2