Starring: Eric Stuart, Amy Birnbaum, Dan Green, Darren Dunstan
Genres: Action, Adventure, Animated, Family, Fantasy, Thriller
Clash in the Coliseum: Part 5 - S3-E36
Other mistake: Kaiba activates The Flute of Summoning Dragon, which allows him to summon any Dragon-type monster from his hand. At this point, he has four cards in his hand. He then holds up two Blue-Eyes White Dragon monster cards in his right hand, but there also appear to be four cards in his left hand, even though there should now be two instead of four. (00:08:55 - 00:09:16)
Duel Identity, Part II - S1-E30
Character mistake: Yugi mistakenly says if he doesn't get a monster out to defend himself Mai can attack him directly, which wouldn't be possible since the rules of Duel Monsters during the Duelist Kingdom arc forbade direct attacks on defenseless opponents. That rule wouldn't be implemented until the Battle City arc.
Seto Kaiba: I'm surrounded by superstitious nitwits.