• Like the other "Frog" cards, this card's Japanese name is a pun: "machigaeru" (間違える) can mean "to make a mistake", perhaps referring to its ability to draw all attacks toward itself (the opponent's monster makes a "mistake" in attacking).
  • This card's name is also a pun in English - a dupe is a mislead fool, but is also part of the word "duplicate," both referring to the two effects of this card.
    • As a deliberate contrast, this card is wearing a mortarboard in its artwork.
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