The WORST episodes of Code Lyoko
Every episode of Code Lyoko ever, ranked from worst to best by thousands of votes from fans of the show. The worst episodes of Code Lyoko!
Code Lyoko tells the story of a group of students who uncover a parallel universe called Lyoko inside a super-computer, which entraps a malevolent sentient AI called X.A.N.A.
#1 - Xana's Kiss
Season 2 - Episode 17 - Aired 1/11/2006
Xana creates a ghost called a polymorphic specter, that can change its shape or form at will and doesn't need to possess a host, then uses it to drive a wedge between the group by having it kiss people while disguised as them. At the end of the episode Aelita kisses Jeremy to see how he'll react. He (predictably) freezes up.
#2 - Tidal Wave
Season 3 - Episode 3 - Aired 9/23/2006
Xana attacks the Lyoko warriors by possessing a large amount of food. At the same time, he bugs up The Mountain Sector by rising the digital sea, but Odd and Aelita go to Sector 5 to stop him. Xana also mounts an attack on Lyoko's core at the same time.
#3 - Straight to Heart
Season 3 - Episode 1 - Aired 9/9/2006
Returning from a strangely calm summer vacation, our heroes are faced with three new problems: Odd is not in the same class as the others, XANA is coming back in force, and he is attacking in the 5th territory. To get into the same class as his classmates, Odd decides to blackmail Jim, telling him that he is going to show a disco film, in which the Jim is the lead actor. Jim still remains strict with Odd. Jeremie then discovers that XANA is attacking in a new room in the 5th territory, and that this room houses the heart of the virtual world...
#4 - The Key
Season 2 - Episode 26 - Aired 2/8/2006
Jeremy discovers the missing key to the link between Aelita and XANA. If they can get the missing piece from XANA, they can destroy him for good. But the evil super computer is ready for the ultimate battle to save itself from destruction.
#5 - Revelation
Season 2 - Episode 25 - Aired 2/8/2006
XANA tries to access a restricted area where Jeremy has stored all the data he's collected since the very beginning. Meanwhile, Yumi helps Odd, who has fallen into a trap on Lyoko, and Ulrich battles a spectre which is a clone of himself.
#6 - Contact
Season 2 - Episode 24 - Aired 2/1/2006
When Sissi begins acting strangely, it's believed she is being controlled by XANA. But when she doesn't seem interested in harming the heroes, they investigate further and discover it's Franz Hopper trying to communicate with them.
#7 - Franz Hopper
Season 2 - Episode 23 - Aired 2/1/2006
A man claiming to be Franz Hopper shows up at the computer lab and blames Jeremy for destroying his diary - the only hope of defeating XANA. With everyone now mad at Jeremy, XANA acts quickly to lure Aelita back to Lyoko.
#8 - Is Anybody Out There?
Season 2 - Episode 22 - Aired 1/25/2006
After hearing strange noises, Sissi conducts a séance at the school. XANA takes advantage of this and sends out a ghost, sending panic across the campus. Our heroes know this is the work of XANA, but can they deactivate the tower in time?
#9 - Tip-Top Shape
Season 2 - Episode 21 - Aired 1/25/2006
XANA possesses the school nurse during the annual Kadic physical fitness tests and she kidnaps Aelita. In order to prevent her from turning Aelita over to the Scyphozoa, Jeremy activates a tower of his own, but XANA is ready for them.
#10 - Déjà Vu
Season 2 - Episode 20 - Aired 1/18/2006
Aelita continues to have strange visions related to a past she does not recognize. It is in fact one of XANA's schemes to draw her to Sector 5 where the Scyphozoa is waiting for her, but no one knows where the visions are coming from.
#11 - Cold War
Season 2 - Episode 19 - Aired 1/18/2006
XANA takes control of the weather and sends temperatures plummeting so low that any outdoor exposure could cause breathing problems. Our heroes must come up with a plan to get to the factory and enter Lyoko to thwart their enemy.
#12 - Vertigo
Season 2 - Episode 18 - Aired 1/11/2006
Ulrich's fear of heights is embarrassingly uncovered in gym class. Upset, he goes off to brood in the woods and Yumi and Odd try cheer him up. However, all is quickly forgotten when XANA dispatches a pack of wolves to wipe them out!
#13 - False Lead
Season 3 - Episode 4 - Aired 9/30/2006
When Xana hacks into a weapon's manufacturing computer network and leaves a paper trail pointing to Jeremie, government agents arrive at the school looking for him. Then, the whole gang arrive at the factory. When they end up tracking Jeremie to the factory, Xana possesses them for an attack on the supercomputer itself in The Ice Sector, and in The Mountain Sector.
#14 - A Fine Mess
Season 2 - Episode 16 - Aired 12/14/2005
After another successful mission on Lyoko, our heroes rematerialize, but the program has malfunctioned and switched Yumi and Odd's bodies. It seems funny at first, until they realize if not reversed, they could both disintegrate for good.
#15 - Ultimatum
Season 2 - Episode 15 - Aired 11/30/2005
After Xana possesses the principal of the school and kidnaps Odd and Yumi, he gives Jeremie an ultimatum: deliver Aelita to the Scyphozoa or sacrifice Odd and Yumi. However, Jeremie and Aelita go to Sissi for help and Sissi agrees to be tempoarily part of the group to help save her father and eradicate Xana.
#16 - Attack of the Zombies
Season 2 - Episode 14 - Aired 11/23/2005
When Xana possesses Kiwi, it turns the little dog into the carrier for a virulent virus that turns those it infects into zombies. Aelita and Jeremie are stuck in the cafeteria and Odd is a zombie himself. Jeremie and Aelita escape but Ulrich and the other students fight the rest.
#17 - A Bad Turn
Season 2 - Episode 13 - Aired 11/16/2005
Ulrich and William battle to impress Yumi during Drivers Ed at school, but they must find a way to put aside their differences and work together when XANA unleashes an army of Krabes in the real world.
#18 - Temptation
Season 2 - Episode 12 - Aired 12/7/2005
Jeremy strangely continues to insist that the group keep returning to the past, despite knowing that it only strengthens XANA's powers. What they don't realize is that XANA has tricked him and now they must help him break this obsession.
#19 - Common Interest
Season 2 - Episode 11 - Aired 11/9/2005
When the supercomputer's uranium power source begins to fail, Xana is forced to possess a local criminal named Peter Duncan to replace it. The supercomputer's periodic shutdowns threaten not only Xana, but also Aelita, whose heart stops beating with each shutdown.
#20 - Marabounta
Season 2 - Episode 10 - Aired 11/2/2005
Jeremy uses lessons from Franz Hopper's journal to create Marabounta, a program designed to combat XANA's monsters. But when his own creation turns against him, Jeremy must combine forces with XANA to defeat the monster.
#21 - The Chips Are Down
Season 2 - Episode 9 - Aired 10/26/2005
When he learns Yumi may be leaving, Ulrich secretly goes back in time, in order to help her family, even though he knows this will make XANA stronger. Jeremy and Yumi decide he's gone too far and consider removing him from the group.
#22 - Missing Link
Season 2 - Episode 8 - Aired 10/19/2005
Yumi wins a brutal battle with the Scyphozoa, but in the process, it takes away her human DNA and she can no longer return home. After numerous rescue attempts by our heroes fail, the only solution seems to be entering the dreaded Sector 5.
#23 - Final Mix
Season 2 - Episode 7 - Aired 10/12/2005
Aelita discovers she has a talent for deejaying after filling in at the school dance. Meanwhile, XANA possesses a teacher who kidnaps Aelita and sends her to Lyoko so the Scyphozoa can steal her memory - unless our heroes can save her.
#24 - Saint Valentine's Day
Season 2 - Episode 6 - Aired 10/5/2005
Aelita receives a necklace which she believes is from Jeremy but is actually a poisoned gift from XANA. She puts it on and becomes powerless to resist the urge to go to Lyoko where XANA's trap awaits her.
#25 - Opening Act
Season 4 - Episode 3 - Aired 8/30/2007
The drummer for a famous rock group, The Subdigitals, visits Kadic in search of young musical talent. Aelita wants to show off her skills, but XANA's attempts to kidnap her might prevent her musical dreams from coming true.