Revealing mistake: When the duel begins, the Shadow Duelist goes first. He has five cards in his left hand and draws a sixth card from his deck. He then places the sixth card next to the fifth card, and then picks up the fifth card in his hand, but the sixth card remains in the same position, without its position being affected by the fifth card being picked up. (00:12:32)
Revealing mistake: When Jaden says he's started hearing voices again, it cuts to a close-up of a flashback showing Jaden holding the Winged Kuriboh card. The shot appears to be flipped as the LIGHT symbol on the card, as well as the illustration of the card is reversed, compared to every other time this card is shown. (00:03:20)
Continuity mistake: Jaden picks up a card from a deck which is revealed to be a Level 1 monster. He then places it on the table, still face up, on top of two other cards. When the shot cuts, it is suddenly face down, and the two other cards have disappeared. Then over a minute later, in the close-up of Professor Banner picking a card up from the deck, one of the monsters has reappeared next to the Level 1 monster. (00:02:29 - 00:03:43)
Revealing mistake: When Jaden says "I got a whole army of vicious army of monsters in my deck just waiting to get at you", a small animation glitch occurs in the bottom right corner of the frame. Just as he begins saying "waiting", he moves his left arm slightly, and part of the red colouring on his blazer disappears from shot, almost as if the animators forgot to colour it in. (00:15:27)
Continuity mistake: After Jaden's life points have gone down to 1000, in the shot of Chazz saying, "Having some test anxiety", his arms are pointed down toward the ground. When the shot cuts to focus on Jaden, his arms are suddenly raised. (00:15:20)
Revealing mistake: When Chazz summons X-Head Cannon and Z-Metal Tank to the field, he is shown standing completely still, without any body movement in sight. He was in the middle of summoning monsters, so he shouldn't have been standing still like that. (00:13:02)
Continuity mistake: The duel starts with Jaden having five cards in his left hand, and then drawing one card from his deck with his right hand. The card is revealed to be Winged Kuriboh. Jaden never moves any of the cards in his hands around, but then he summons Elemental Hero Clayman, which he is shown holding in his right hand, even though Winged Kuriboh was just shown in his right hand. (00:09:58)
Revealing mistake: Right before Jaden and Chazz start the duel, in the shot of Crowler saying "Indeed, and in front of the whole school too", there are two Slifer Red students who appear to be standing completely still and motionless. (00:09:43)
Continuity mistake: When Jaden draws the Fusion Gate card, in the close-up shot of the card, it is facing toward him. In the next shot, the card is facing away from him and is also held differently (so that Jaden can place it on the duel disk). (00:14:00)
Other mistake: When the Elemental Hero Sparkman card is shown in Jaden's hand, the card is shaded orange. Monsters that have no special abilities (which Sparkman does not) are shaded yellow, whereas monsters that do have abilities are shaded orange, so there is no reason for the Sparkman card to be shaded orange here. (00:11:58)
Revealing mistake: When Chazz summons Reborn Zombie in Defence Mode, the monster appears on the duel field, as well as the playing card beneath it, positioned at a horizontal angle, for it to stand on. The card casts a shadow on the ground, but the shadow can be seen lifting above the ground. (00:11:22)
Revealing mistake: When Alexis places her Blade Skater card on her duel disk, there is a brief frame where the cards on her duel disk pass above her hand. (00:13:09)
Continuity mistake: When Jaden is finishing off his painting of Sparkman, in the shot of him saying "It's a work of art. It's pure genius", his left hand is placed against the lower left side of the pad. In the same shot, he brushes a huge smear of red paint against the bottom half of the page. When the shot cuts, his left hand is nearer to the top of the pad, there are now paint smears are now across the top half of the page, and the paint smear along the bottom of the page has disappeared. (00:02:02)
Continuity mistake: In class, Syrus holds up a painting he made on his notepad for Jaden to see. Take note of the size of the pad, because a couple seconds later, after Jaden's painting of Sparkman is shown, the notepad is suddenly much smaller than it was seconds earlier. (00:01:55)
The Seventh Shadow Rider - S1-E44
Continuity mistake: When Alexis loses the duel, she falls to the ground and there is a shot of her cards landing on the ground, including her Etoile Cyber card that lands face up. When the shot cuts, the cards surrounding Etoile Cyber have changed position. (00:12:55)
Duel Monsters Spirit Day - S1-E42
Revealing mistake: At the start of the episode, when each of the dorms are shown celebrating at their respective festivals, all the background extras are shown standing completely still, despite the primary characters moving around.
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)
Continuity mistake: After Jaden wakes up from his dream, he puts the back of his hand over his head. In this shot, his hand is positioned above his left eye, but in the next shot, his hand is positioned above his right eye. (00:01:05)
Field of Screams: Part 2 - S1-E32
Continuity mistake: When Jaden is lying in bed and says "That's it. I'm duelling her. Tonight", he is holding onto the blanket with his hands, but his hands change position between shots. (00:02:58)
Doomsday Duel: Part 2 - S1-E30
Continuity mistake: After Nightshroud destroys Elemental Hero Tempest, Jaden collapses to the floor. At first, his right hand is free, but when the shot cuts, his right hand is suddenly making a fist. (00:14:40)
