Other mistake: At the end of the intro, before the logo appears you can see Mojo Jojo's brain. His brain is green and it should be pink.
Other mistake: During the first dozen or so episodes, during the opening credits, Onizuka is shown spray-painting a picture of a woman on a wall, with the words "Love" and "Piece" written next to her. Obviously, "piece" is a mistranslation, and the wrong spelling. The correct text should read "Love" and "PEACE."
Clash in the Coliseum: Part 4 - S3-E35
Other mistake: When Kaiba sets the trap card Cloning face down on the field, he has five cards in his hand. On Kaiba's next turn, he still only has five cards in his hand, even though duelists are supposed to draw one card from their decks at the start of their turn. (00:10:20 - 00:11:29)
Other mistake: When Gamora is showing the court the footage of the destruction of the planet Vergilia, she says the images were taken from one of the planet's moons. However, much of the footage shown is from the point of view of the planet surface, which is not a view that could be achieved from a moon.
Other mistake: When the monk returns the water bottle to Siro and Taja, not long after talking to them (not realising the water bottle belongs to Kung Lao), how did Siro and Taja get so far ahead of the monk in that short amount of time? (00:05:35 - 00:06:35)
Other mistake: They keep saying the taxi cab is 20 years old, but that cab is brand-new in the episode.