About the characters

- The principal thinks Odd has a lot of potential but that he’s as lazy as the day is long.
- Jim says he was a professional ballroom dancer in Buenos Aires.
- Mr Hertz wants to impress a man named Pedro by learning ballroom dances.
- In this episode, Odd defeats Ulrich’s virtual envelope while it’s controlled by XANA, giving it extra powers. This can be seen as a sort of revenge, as in episode 51 “Revelation” Ulrich declares that Odd has never beaten him.
Also, the combat itself of Odd against XANA-Ulrich is an inversion of the fight in episode 51 when Ulrich faces off against a polymorphic clone of Odd.

About errors

- The principal’s eyebrows are grey when he tells Ms Hertz she was an adolescent once.
- How did Ulrich get out of the scanner room if he couldn’t operate the lift?
- When Jeremy says “Oh no! Impossible!” it shows a clip of him later in his room figuring out what happened to Ulrich. Strangely, this error didn’t occur in the original French episode.
Similarly, when Ulrich says “Great, that’ll give me time to see about my future," we see Jeremy talking. He’s in the same pose as when Jeremy was saying he’ll have it worked out by that afternoon, but his face is shaded the opposite way and he moves slightly. It looks like Ulrich accidentally walked into Jeremy’s body at this point, but it was just an animation error. Again, this didn’t occur in the original French.
- The door handle to Odd and Ulrich’s room is on the left instead of the right.
- The marks under Nicolas’ eyes are absent when he talks about his soap with Jim (Ulrich in Jim’s body)
- The handle to Jim’s room is on the left instead of the right at the moment when Ulrich (in Jim’s body) leaves.
- Ulrich takes control of Kiwi’s body and talks to his friends. However, dogs, like most animals, don’t have the necessary organs in the throat to make the same sounds humans can.
- When Ulrich (as Jim) enters the cafeteria and tries to stop the food fight, we can see Odd, Yumi and Aelita. Then a moment later, when he leaves with Odd and Yumi, they receive a call from Jeremy who’s at the factory with...Aelita!

About the series

- French title: Désincarnation

- XANA can send green energy bursts from Ulrich’s sword.
- It’s academic review day for year 9.
- First mention of a man Ms Hertz is dating: Pedro!
- First time a vehicle (the Overboard) is used in the Core Chamber!
- The key to deactivate the countdown is the same as in episode 34 “Missing Link”. Aelita and Yumi even run in similar paths to the ones Odd and Ulrich did, for the most part!
- Ms Meyer, Ms Kensington and Mr Caggiat are strangely absent from the academic review.
- Only episode in which Odd winks at the viewer.
- Like in episode 46 “Déjà Vu” Nicolas says in his exam that a kilo of mercury weighs a tonne, which is what Sissi said when Ms Hertz asked her before.
- Jim is left unconscious in the scanner room, but we don’t know how he was returned to the school. Did he wake up in the scanner room and leave without saying anything or did the heroes carry him back?
- First and only episode in which the title screen shows not a tower, but a Holomap, where the Forest, Desert and Ice Sectors are missing after their destruction in episodes 54 “Lyoko Minus One”, 58 “The Pretender” and 61 “Sabotage”.

About references

- Odd: “…the great Ulrich, the first man to set foot on Sector 5 without passing Go!”
Reference to the first man to walk on the moon!
Passing Go is a reference to the game Monopoly in which all players start on Go, then make their way around the board and pass Go when they get back to the start again, collecting $200.

- Odd: “The shortest string bean is it!”
Modification of the game draw straws.

- Ms Hertz: “I’ve got to learn how to dance the tango by then!”
The tango is a dance often performed as a couple.

- When Yumi is in her room with the can, we can see a plush toy sitting on her desk that strongly resembles Ernie from the American children's series Sesame Street.