Starring: Dan Green, Gregory Abbey, Wayne Grayson
The Fiendish Five, Part 1 - S1-E9
Revealing mistake: After Joey and Tristan fail to remove the sword, Tristan asks Yugi to remove it instead. While he is asking, "Yugi, why don't you give it a go?", his eyes don't appear to be aligned with where Yugi is standing. Yugi is standing at the bottom of the stairs in front of Tristan, but Tristan is looking to the left. (00:10:35)
Revealing mistake: Just as the episode ends, the main characters are walking through the portal. When the shot is pulling back, they are walking, but they don't appear to be moving forwards. They are just repeating the same walking animation. This becomes apparent when the door frame is visible in the shot, and it's clear they aren't moving forwards. (00:20:35)