The Final Face Off: Part 5 - S3-E45
Continuity mistake: In the wide shot where evil Marik tells good Marik, "Don't be a fool, Marik," Kaiba and Mokuba can be seen standing behind Yugi, while Ishizu and Odion can be seen standing behind Roland at a different corner of the duelling field. Minutes later, after the duel has finished, in the wide shot where Roland announces the winner, Kaiba and Mokuba are standing next to Ishizu and Odion. (00:09:25 - 00:11:30)