About the characters

- Second time Jim discovers Kiwi.
- Milly finds Ulrich attractive.
- Kiwi sleeps in the drawers of Odd’s closet.
- Ulrich thinks that Kiwi eats like Nicolas in the cafeteria.

About errors

- One of the two XANAfied trains passes a station which it has already passed though before.
- When Jeremy enters the lab, the buttons on the lift disappear.
- The tower activated before XANA attacks the two trains isn’t the same as the one deactivated at the end.
- Sissi’s bag disappears from her right shoulder after Kiwi jumps on her and appears when Herb does the same thing after the RTTP.
- When Kiwi throws himself at Sissi, the shed door is open towards the outside, when it’s meant to open towards the inside.
- The Yumi’s outfit is inversed when she is devirtualised and when she tells Jeremy that there were no problems with the transfer.
- It’s not Aelita’s icon (yellow) that we see on the factory computer during one shot but one of the others’ (green) before using her Creativity on the Megatank.
- We can see Kiwi approach his master’s feet during one sequence. But in a closer shot, we see that the dog doesn’t move towards the feet of his master, but those of Sissi.
- Odd’s pants are completely dark at the moment when Ulrich says “I think she’s hallucinating,” then the colours are inversed during his transfer and finally they become the lighter shade of purple when Ulrich says that Milly and Tamiya will have a good scoop for the paper.
- The marks under Nicolas’ eyes disappear when he (and Herb) join Sissi in mocking Milly and Tamiya, when he says Tamiya is dumb, when Sissi says she can have any boy she wants, and when Sissi stops him from trying to attack Odd.
- The factory computer microphone often changes (wired or wireless) and disappears from Jeremy’s ear just before Ulrich enters the scanner, before he says “Transfer Yumi,” when he tells Odd that Ulrich only has 10 life points left, the time remaining before the train collision, when Yumi says she did what she could, when Ulrich tells Aelita to save herself from the Megatank, when Jeremy says he knew Aelita would use her Creativity, when Ulrich, Yumi and Jeremy watch to see if the XANAfied trains will crash, just before the code is entered and at the moment Ulrich says “just in time.”
- The shot of Aelita entering the tower was reused from episode 1, “Teddygozilla”.

About the series

- French title: Big Bogue

- Animals are forbidden at Kadic.
- First time the three heroes are all virtualised.
- First use of the Blok’s ice beam, which shows that some monsters have more than one weapon.
- Ulrich says something prophetic to Jeremy when he says” "Great idea, only how do you suggest we do it? Sprout wings, huh?”
In season 4, Aelita has wings as part of her new combat outfit.
- Odd was hit by a blast from the Megatank without being devirtualised, which is the only time this happens in the series…