Unwanted Guest: Part Two - S5-E2
Revealing mistake: When Yugi and Rick walk down the steps of the duelling platform after the duel has finished, Yugi is holding onto Rick's deck before handing it back to him. In this shot, the front side of one of Rick's cards can be seen, and it is missing the illustrations. (00:12:20)
Unwanted Guest: Part Two - S5-E2
Other mistake: When Slate Warrior is destroyed by Luster Dragon, the DuelTek's life points go down to 3400. However, the points begin counting down from over 4000. First, duelists only have 4000 life points at the start of a duel, and second, the DuelTek's life points were 3700 at the end of the previous turn due to Luster Dragon destroying Airknight Parshath. (00:07:36)
Unwanted Guest: Part Two - S5-E2
Continuity mistake: On the DuelTek's first turn, it has four cards in its hand. Then there is a close-up of the cards in its "hand", where there are only three cards visible, and then it draws a fourth card. In the shot after that, there are now five cards in its hand. (00:04:03)
Unwanted Guest: Part One - S5-E1
Continuity mistake: When Yugi hands Rick the Heart of the Underdog card, Rick has the card raised to his face when it is handed to him. When the shot cuts to focus on Yugi, the card is suddenly away from Rick's face. (00:15:57)
Unwanted Guest: Part One - S5-E1
Revealing mistake: When Mokuba is showing everyone the new duelling field, in the shot of Joey saying "Not too shabby," the Millennium Puzzle that Yugi is wearing is animated completely wrong. Instead of the hole in the centre and the designs that are shown on the front side of the puzzle, there is only one awkwardly drawn shape. (00:12:06)
Unwanted Guest: Part One - S5-E1
Continuity mistake: When Kaiba is speaking to Mokuba and Roland in his office, his computer is positioned toward the centre of the desk. Later in the scene, when Mokuba says, "It'll be the biggest thing since Battle City," the computer has moved closer to the edge of the desk. The computer goes back to being in the centre of the desk shortly after, and also changes position from being near the rear side of the desk to being closer to the front side of the desk. (00:06:43 - 00:07:13)
Unwanted Guest: Part One - S5-E1
Continuity mistake: When Joey is sleeping on the couch at the start of the episode, the table beside him has numerous items on it. There is a red Pringles can next to a blue paper box, a purple box behind the blue box, and a crisps bag beside the purple box. A few seconds later, when Joey sits up, the Pringles can is now ahead of the blue box, and the crisps bag is now ahead of the purple box. (00:01:15)
