Season 1
(2003)
Overview
After discovering a parallel universe hidden inside a supercomputer, four students must stop a renegade virus from destroying the secret world.
Cast
as Jeremie Belpois / Odd della Robbia (voice)
as Yumi Ishiyama (voice)
as Ulrich Stern (voice)
as Aelita Schaeffer (voice)
as Sissi Delmas (voice)
Episodes
Teddygozilla 7.5
September 3, 2003
A student named Milly seeks the comfort of her teddy bear after being embarrassed and ostracized due to her young age b…
Seeing Is Believing 9.0
September 10, 2003
Odd decides to start a music band with his friends. But Jeremy can't play, so they try to hire a drummer. In the end, …
Holiday in the Fog 9.0
September 17, 2003
Ulrich and Jeremy are doing graffiti on a wall on campus while Kiwi wakes up Jim. When Jim passes Ulrich and Jeremy, Ul…
Log Book 9.0
October 1, 2003
Sissi has found something very special and dear to Ulrich, his diary! Unfortunately the diary contains some informatio…
Big Bug 9.0
October 1, 2003
The day starts off when two girls are talking about Ulrich and then Sissi goes and interrupts and tells the girls that …
Cruel Dilemma 9.0
October 8, 2003
Jeremie is working on the materialization program, and finally gets it. Jeremie wants to matierialize Aelita, but real…
Image Problem 9.0
October 15, 2003
This episode starts out as Yumi and Aelita are running inside Lyoko looking for the activated tower. Then Yumi suddenly…
End of Take 9.0
October 22, 2003
When a director comes to town to film a movie, XANA posseses a plastic alien model in order to destroy Ulrich and the o…
Satellite 9.0
October 29, 2003
When all the student's cell phone goes off in class, it starts Sissy on a petition to save her cell phone--but it's goe…
The Girl of the Dreams 9.0
November 5, 2003
Jeremie mysteriously loses contact with Aelita. The same day, a new student named Taelia (who looks alot like Aelita) a…
Plagued 9.0
November 12, 2003
Jeremie learns that he has to take a test. If he passes, he'll get transfered to a new school and nobody will be able t…
Swarming Attack 9.0
November 19, 2003
Ulrich is fussing over a mysterious letter found slipped under his door one night... a love letter signed by Yumi! Mea…
Just in Time 10.0
November 26, 2003
The episode starts with Jeremie still trying to materalize Aelita. He calls the team to the factory to show them his l…
The Trap 9.0
December 3, 2003
It's the anniversary of the day Jeremie and the others met Aelita. They begin planning a surprise for her, unaware tha…
Laughing Fit 10.0
December 10, 2003
After seeing laughing gas in Science class, Team Lyoko has to see it again - working for Xana. While working for Sissy…
Claustrophobia 10.0
December 17, 2003
After a quick game of soccer, Yumi heads home for the night, but Odd and Ulrich head in for dinner, and Jeremie is alre…
Amnesia 10.0
December 24, 2003
When learning about NanoDoctors, small robots being designed to cure dieases, Ulrich holds some gel that the NanoDoctor…
Killer Music 9.0
December 31, 2003
A new rock song Odd downloads sends him into a coma, and the same song is passed through the school. XANA's new beat i…
Frontier 9.0
January 7, 2004
Jeremie is now taking his ""Materalize Aelita!"" campaign to levels unknown - quite literally. He virtualizes himself,…
The Robots 9.0
January 14, 2004
Both Herb & Jeremy are in a robot competition Herb with ""Iron Sissy"", and Jeremy with ""Kiwi 2."" Herb cheats by lau…
Zero Gravity Zone 9.0
January 21, 2004
Xana decided to get rid of everyone by using the power of Gravity, and Yumi, Odd, and Jeremy went to the factory, but U…
Routine 10.0
January 28, 2004
Ulrich is getting tired of getting being rebooted so many times and waiting to find out if Yumi has feelings for him or…
Rock Bottom? 10.0
February 4, 2004
Well, it starts off as Yumi wanting to have a party at her house. Of course, Odd jumps into action, and says that he ha…
Ghost Channel 10.0
February 11, 2004
One day at school, Jeremy notices that Odd, Ulrich, and Yumi are missing. Meanwhile, Odd, Ulrich, and Yumi ARE at schoo…
Code: Earth 10.0
February 18, 2004
As Jeremy is perfecting his materialization program for Aelita, Yumi, Ulrich and Odd are making preparations for her ar…
False Start 10.0
February 25, 2004
Aelita is materialized, but unfortunately, Xana implanted a virus inside of Aelita, so if Xana dies, so does Aelita. Th…