Super Mario Bros.

Plot hole: After Mario and Luigi have defeated Bowser, Daisy's father and the man in New York re-evolve back to their human forms. This makes no sense as it is never explained, and none of the goombas or Koopa troopas ever revert.

Character mistake: After Spike comes out of the evolution device, he asks Iggy "Do you know what the square root of 26481 is?" And then answers "191". 191 squared is actually 36481. (00:47:20)

Yoshi

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Luigi Mario: Nothing's impossible, you just gotta believe.

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Trivia: Near the end of the movie when the Bob-omb is walking upsidedown, look at its feet during the close-up. There is a Reebok symbol and the English flag.

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