The Master of Magicians: Part 1 - S2-E11
Character mistake: When Yugi activates the spell card Card Destruction, he places the card in his monster card zone and not in the spell and trap card slots that duelists are supposed to do when using a duel disk. (00:17:38)
Playing with a Parasite: Part 2 - S2-E15
Character mistake: Weevil tells Joey that the only monster cards that have enough attack points to defeat Perfectly Ultimate Great Moth are Gate Guardian and Blue Eyes Ultimate Dragon. However, at this point in the series, monster cards such as Dragon Master Knight and Five-Headed Dragon (which have 5000 attack points each) were established to exist and could defeat Perfectly Ultimate Great Moth, which has 3500 attack points. (00:02:29)
Legendary Fisherman: Part 1 - S2-E19
Character mistake: On Mako's second turn, he says, "I'll place a monster face down as well," but then he is shown placing a spell/trap card face down instead of a monster card. (00:13:47)
Character mistake: When Umbra activates Masked Doll, he says, "My Masked Doll will absorb any and all negative effects caused by my magic card." When he says "my magic card," he is referring to Mask of Brutality; however, he didn't activate this card. Lumis was the one who activated Mask of Brutality. (00:16:39)
Character mistake: When Kaiba summons Vorse Raider, he places the monster card face down on his duel disk, instead of face up, which is what he should do if he wants to summon a monster to the field. (00:17:28)
Character mistake: Just before Yugi summons Kuriboh, he says, "I'll place one card face down," but is then shown placing the Kuriboh card on his duel disk. Then he says, "I will summon Kuriboh," but is shown placing a card face down in one of the spell/trap card slots. (00:04:44)
Friends 'Til the End: Part 2 - S2-E27
Character mistake: When Yugi activates the spell card Exchange, Kaiba thinks to himself, "The Exchange card allows Wheeler to take any card he wants from Yugi's deck." This isn't quite true, as the Exchange card allows an opponent to take one card from the duelist's hand, not their deck. (00:09:00)
Awakening of Evil: Part 4 - S2-E40
Character mistake: Kaiba says he will give Joey and Odion five minutes to get back on their feet, and whoever gets up first will be declared the winner. Less than a minute later, the guard looks at his watch and says, "They each have three minutes," even though only 35 seconds or so have passed in real time. (00:08:58 - 00:09:35)
