You're referring to the English Dub exclusive episode 122.4 of Yu-Gi-Oh! Duel Monsters!
These episodes follow Yugi and his friends through the middle of the Duelist Kingdom tournament Episode 12: Trial by Red Eyes Joey Wheeler faces Rex Raptor. In the dub, Joey wins the Red-Eyes Black Dragon
Here’s a speculative story based on your prompt—an imagined “lost episode” of Yu-Gi-Oh! Duel Monsters, labeled as Episode 1224, produced exclusively for the English dub. yugioh duel monsters episodes 1224 english dub exclusive
Voice Differentiation: One of the most praised dub-exclusive choices is the massive shift in Dan Green's voice between the timid Yugi Mutou and the booming, confident Yami Yugi. In the original Japanese, voice actress Shunsuke Kazama kept the pitch much closer between both forms. 🎵 Dub-Exclusive Music
An Unofficial English Dub Exclusive Episode (Set after Episode 224) You're referring to the English Dub exclusive episode 122
Yugi duels Panik. In the U.S. broadcast, parts of these episodes were combined into a single episode titled Panik Attack Episode 19–21: Double Trouble Duel
that significantly altered the tone and character dynamics for Western audiences. Key Exclusive Features of the English Dub In the dub, Joey wins the Red-Eyes Black
KC Grand Championship (Episodes 185–198): A shorter tournament arc focusing on Zigfried von Schroeder.