"If you put your mind to it, you can accomplish anything."
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Tony pizza doc boss

Back to the Future: The Animated Series




12 (12 in series)


Peyton Reed & Mark Gowen and John Ludin & John Loy


John Hays


December 7, 1991

Episode chronology
Previous episode

"Gone Fishin'"

Next episode

"Clara's Folks"

"Retired" is the twelfth episode of the first season of Back to the Future: The Animated Series, and the twelfth episode overall. It first aired on December 7, 1991.

The comic book Back to the Future 4 is an adaptation of this episode.

Brief synopsis[]

On April Fool's Day, Jules and Verne "sabotage" many of Doc's inventions, including his Brain-wave analyzer. After using the tampered machine, Doc thinks he has used up 99.9% of his brain and retires from science. After many attempts at seeking other employment (parking cars, mowing lawns, making pizzas), he goes back in time to the Cro-Magnon period and unsuccessfully tries to show the proto-humans how to make fire. Realizing that there are still things left to invent (the wheel, etc...), he decides to go to Marty's rock and roll concert - it is something totally mindless. Marty has "borrowed" one of Doc's tampered inventions - the Environmental Adjuster - to create special effects for the concert and in doing so, creates a catastrophic rainstorm/flood. After accidentally tearing up the curtain, when Marty lands into the water along with Jules and Verne, it's up to Doc to use his remaining "0.01%" of his brain to get everyone out of danger. The boys confess to their pranks and the inventor returns to his life of science.

Behind the scenes[]

  • Marty's band The Pinheads had last been seen in 1985 in Back to the Future.
  • April 1, 1991 was on a Monday (Doc introduces the episode by explaining that this happened on the most recent April Fool's Day), and Marty's concert is four days later on a Friday.
  • The song that Doc plays on piano If I Only Had a Brain is from the 1939 film version of The Wizard of Oz.
  • While in the Cro-Magnon period, Doc at one point says "D'oh," Homer Simpson's catchphrase. Dan Castellaneta voiced both Homer and the animated version of Doc.
  • When Clara said that there's a lot of jobs that doesn't require brains, Doc thinks of the rumor that politics don't think of what they do.


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