Character mistake: The Shadow Duelist activates the effect of Terrorking Archfiend, where he states if the monster is targeted by an opponent's card, a number between 1 and 6 is chosen at random, and if the number selected is 2 or 5, then Terrorking Archfiend won't be affected by it. Chumley then states the odds are in Jaden's favour, to which Syrus dismisses this, saying he flunked math. However, Chumley is actually correct, as the odds for Jaden are 4 in 6, whereas the odds for the duelist are 2 in 6. (00:15:45 - 00:16:09)
Character mistake: When Chumley falls off the tree and his cards fall on the ground, Jaden picks up one and comments "There's like, a zillion koala cards down here" when he looks at it. However, all the other cards on the ground are face down and he only looked at one card, so there would be no way for him to know if there were a lot of koala cards. (00:03:58)
Character mistake: Jaden tells Damon that because of Elemental Hero Flame Wingman's ability, he will lose life points equal to half his destroyed monster's attack points. This is incorrect, as Damon will actually lose life points equal to the full attack points of the destroyed monster. He has used this card multiple times throughout the series, so this isn't a mistake he should have made. (00:18:25)
Character mistake: The episode opens late at night when Syrus overhears Banner on a call where he discusses burying Jaden alive. The next morning is a classroom scene where Banner says the field trip will take place on Saturday at 7am, and the next scene shows Jaden, Syrus, Chumley and Alexis outside the school at 7am waiting for Banner to arrive. In this scene, Syrus tells Jaden he heard Banner talk about burying Jaden alive the previous night, but by this point, at least two nights must have passed. (00:03:48)
Character mistake: When Slade is giving Chazz the conditions for the duel, he says "You're only allowed to duel with monsters with less than 500 life points." What he meant to say was attack points, as life points are the amount the duelist has during the duel, whereas attack points are the points that the duel monsters have. (00:04:18)
A Hassleberry Hounding - S2-E3
Character mistake: At the start of the episode, Jaden says that he and Syrus have to carry 14 replacement duel disks across campus, which is later revealed to be because Hassleberry beat each of the 14 students in a duel and then stole their duel disk. But during the duel later on, Hassleberry says "I'm beating you the same way I beat my last 12 rivals", instead of the 14 students that were stated earlier. (00:00:09 - 00:15:35)
Character mistake: When Jaden uses the spell card Gift of the Martyr to increase Neos' attack points to 5400, T-Bone shouts "That ain't right. Fifty-four grand?", but fifty-four grand would be 54,000 and not 5400. (00:17:52)
Character mistake: After Alexis has White Knight Queen attack Sparkman and then has Snow Fairy attack Card Trooper, Jaden tells her that Sparkman's ability activates, which allows him to draw one card. This is not correct; it is actually Card Trooper that has the ability to let him draw one card, not Sparkman. (00:06:44)
Character mistake: When Jaden has his Elemental Hero Neos and Neo-Spacian Flare Scarab fuse together, he says "Roll call, Flame Scarab, Neos, contact fusion." When he says this, he incorrectly refers to Flare Scarab as Flame Scarab. (00:17:20)
Tough Love - S2-E43
Character mistake: When Zane activates the trap card Power Wall, he explains that for every card he sends to the graveyard, Syrus loses 100 points. What he meant to say, was that for every card he sends to the graveyard, the amount of life points he loses during the attack is reduced by 100 points. Since neither Zane nor Syrus lost life points during this, what he said was obviously incorrect. (00:14:47)
Tough Love - S2-E43
Character mistake: When Zane is explaining Cyberdark Dragon's ability to Syrus, he says that for every card in his graveyard, his dragon gains 100 points, before saying "Since there are 38 dragons in my graveyard, Cyberdark Dragon gains 3800 points." However, his deck consists of monster cards, spell cards and trap cards, his statement that there are 38 dragons in his graveyard is incorrect. (00:18:00)
Trapper Keeper: Part 1 - S3-E11
Character mistake: When Jesse is explaining Crystal Beast Amethyst Cat's ability to Trapper, he says "When I give up half my life points, you'll see what I mean." Amethyst Cat's ability allows it to attack an opponent directly by giving up half of its attack points, so Jesse was incorrect in saying he would be giving up half his life points. (00:10:30)
Breaking of the Sacred Seal - S3-E23
Character mistake: When Marcel activates his two face-down cards, he says "I'll start by revealing my two face-down cards which both happen to be Break the Seal spell cards", but they are trap cards as they are pink and spell cards are green. (00:15:10)
Character mistake: On Jaden's first turn, he considers fusing his Bubbleman and Clayman to summon Elemental Hero Mudballman because "he'd have enough attack points to take down the Sky Scouts' Simorgh." This is not true, as Mudballman has 1900 attack points and Simorgh has 2700 attack points. (00:10:57)
The Forbidden Ritual: Part 1 - S3-E40
Character mistake: Aster uses his Diamond Dude's ability to activate Destiny Draw from his graveyard, allowing him draws two cards from his deck. After doing this he then refers to Destiny Hero Diamond Dude as Destiny Dude instead of Diamond Dude. (00:14:30)
The Forbidden Ritual: Part 1 - S3-E40
Character mistake: When Aster attempts to attack Adrian with his Destiny Hero Dread Master, Adrian activates a face-down card Dimensional Prison, to which Aster replies "Great, a Counter Trap", however, this card is actually a Normal Trap card. (00:17:05)
Conquering the Past: Part 1 - S3-E42
Character mistake: Just after Zane destroys Jaden's Spark Blaster, he says "You were too afraid to fuse your Sparkman with your Spark Blaster last turn", however he used the wrong wording. "Fuse" means to combine two monster cards into one Fusion monster. He meant to say "equip" as equip spell cards like Spark Blaster are equipped to monster cards like Sparkman. (00:06:52)
Conquering the Past: Part 1 - S3-E42
Character mistake: When Zane destroys Jaden's Hero Barrier card with the effect of his Armoured Cybern, he says "Why wouldn't you play that spell?", but Hero Barrier is a trap card. (00:07:08)
Conquering the Past: Part 1 - S3-E42
Character mistake: When Zane destroys one of Jaden's face-down cards, which is then revealed to be E - Emergency Call, he says "That was the trap, Emergency Call." However, E - Emergency Call is a spell card, not a trap card. (00:07:33)
