Doomsday Duel: Part 2 - S1-E30
Other mistake: Jaden activates the spell card Silent Doom and summons Elemental Hero Sparkman to the field in defence mode. He then activates the field spell Fusion Gate, but when he goes to insert the card into his duel disk, Sparkman is shown at a portrait angle on the duel disk, indicating that it is in attack mode instead of defence mode. (00:06:36)
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)