• "Ryu" is the Japanese word for "dragon".
  • In its various appearances in the dub of the anime, this card's name has consistently been mispronounced. The closest anglicized equivalent to its written name is "Ree-you"; Seto Kaiba has pronounced it as "Rai-you", and Yami Yugi as "Roo".
  • This is the first card ever that specifically mentions the Battle Step in its card effect.
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