Other mistake: When Jaden realises his arm is fading away, the Elemental Hero Clayman card shown on his duel disk is shaded orange. It should be shaded yellow, as it is not an effect monster, and effect monsters are shaded yellow. The same mistake occurs around a minute when the Shadow Duelist says, "It's your move, but make it count, it may be your last." (00:17:28 - 00:18:22)
Yu-Gi-Oh! GX (2004)
1 other mistake in Yami no dêmon dekki - chronological order
Starring: Vinnie Penna, Jesse Hooker, Kanako Irie, Tony Salerno
Continuity mistake: At the end of the battle between Jaden Yuki and Gravekeeper's Chief, just as the explosion settles, in one shot you see the Gravekeeper's Spear card to the left of Gravekeeper's Chief on the duel disk. However in the next shot Gravekeeper's Spear is replaced with Magician of Black Chaos, which Chief neither has in his deck or ever played in the match. (00:13:35)
Tag Team Trial: Part 1 - S1-E10
Syrus Truesdale: First, I'm going to summon Gyroid in attack mode.
Para: You must be joking. I am surprised that thing even has an attack mode.