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* When [[Jack Atlas]] summons this card, he chants ''"The ruler's heartbeats will now file through here! Take witness to its creation-shaking power! Synchro Summon! My very soul, Red Demons Dragon!"''.
* In [[Yu-Gi-Oh! 5D's - Episode 113|Episode 113]]; according to Jack in the Japanese version, he says that Red Demons Dragon is part of his own soul.
* Its attack names in the Japanese anime are "Blazing Crimson Hell Flare" and "Absolute Power Force" and its effect is "Demon Meteor". In the English anime, its attack names are "Scorching Crimson Flare" and "Absolute Power Force". Also, unlike most dragons who shoot their attacks from their mouths, "Red Dragon Archfiend" gathers a ball of fire above its fist, and then lets fly with its [[Attack]].
