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FILM · 2020

The War with Grandpa

9 archived facts 2 topics 1 source Last reviewed Oct 2026

9 Interesting Facts About The War with Grandpa

Interesting Facts (8)

  1. #001

    The War with Grandpa was released three years after filming took place.

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  2. #002

    The War with Grandpa was adapted from Robert Kimmel Smith's 1984 children's book of the same name.

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  3. #003

    The War with Grandpa had several failed release dates, including April 21, 2017, October 20, 2017 and February 23, 2018. It was finally released on October 9, 2020.

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  4. #004

    The War with Grandpa was supposed to be filmed in Toronto, but it was filmed in Georgia instead.

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  5. #005

    Uma Thurman and Christopher Walken both played villains in the Batman universe: Thurman as Poison Ivy in Batman & Robin (1997) and Walken as Max Shreck in Batman Returns (1992). Robert De Niro played Murray Franklin in Joker (2019), which is set in an alternate Batman universe.

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  6. #006

    Robert De Niro's handwriting is not seen in the film because it was written by someone else.

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  7. #007

    The role of Peter was originally to be played by Maxwell Jenkins, as he stated in a TIFF red carpet premiere interview with Josh Rachlis in 2016 for A Family Man (2016). A casting and location blog also reported the same at the time.

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  8. #008

    The War with Grandpa reunites Christopher Walken and Jane Seymour after Wedding Crashers (2005).

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Characters & Cast (1)

  1. #009

    The War with Grandpa reunites Uma Thurman and Christopher Walken, who both appeared in Pulp Fiction (1994). Thurman played Mia (Wallace) in that film, and Mia is also the name of her character's eldest daughter in The War with Grandpa.

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Sources & editorial notes

Reference databases

  • IMDb IMDb title page (trivia)

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