This article is about the person. For the episode, see Franz Hopper (episode).
|Waldo Franz Shaffer|
The photo of Schaeffer in the Cortex
|First appearance||Contact (in Sissi's body)|
|Known as||Franz Hopper|
|Loyalty|| Team Lyoko|
Project Carthage (formerly)
|Skin color||Pale white|
|Avatar|| Multiple white energy orbs (Seasons 2-3)|
Large white-purple energy orb (Season 4)
|Voiced by||Paul Bandey (season 2), Alan Wenger (seasons 3-4)|
Waldo Franz Schaeffer (also known as Franz Hopper) was an extremely gifted, talented, bright intelligent scientist. He created the supercomputer, the virtual world of Lyoko, and X.A.N.A. He was the husband of Anthea Hopper and father of Aelita.
The creation of Lyoko and X.A.N.A
Schaeffer created X.A.N.A. to be the staging grounds and means of the destruction of Project Carthage, a secret government program he created to intercept enemy communications. However, there were people who disliked this and wanted to get rid of him. He repeated the same day over 2,546 times in order for him to accomplish his goals. By the time Lyoko was nearing completion, he became very paranoid and mildly insane.
Virtualization and Capture
When the moment he had long-awaited had came, he and Aelita fled to Lyoko, only to be attacked by X.A.N.A. and his monsters. He ordered Aelita to stay inside a tower and Hopper was captured and taken to an unknown location within Lyoko. The Supercomputer was then somehow shut down, only to be reactivated once again several years later by a boarding-school student.
Escape and Death
He escaped and eventually sacrificed himself for his daughter in The Key. Aelita found a fragment of her father's DNA in Carthage, so she still hoped for him to be alive; the Lyoko Warriors continued to search for him after this despite his low chances of any possible survival.
In Final Round, Jeremie and Aelita finally managed to track him down in Lyoko's code, but Lyoko was destroyed by X.A.N.A. before he could be materialized back onto Earth. However, it seems that he escaped to the Internet when he sends a coded message to Team Lyoko after Lyoko was destroyed to asist them in how to recreate the virtual world once again so that they could continue fighting the evil artifical intelligence.
In Wrong Exposure, it is revealed that Franz's real name is Waldo Schaeffer. Hopper is the last name of Aelita's mother, and Franz is his middle name. Franz changed his name when he and Aelita moved to Hermitage, since he wanted Aelita and himself to have a fresh start. He was once a science teacher at Kadic but was replaced by Suzanne Hertz after his disappearance 9 years prior to the show.
In Fight to the Finish, he ultimately sacrificed himself to destroy X.A.N.A. once and for all by shielding Aelita from the lasers after she had been hit once while she finished activating the multi-agent program to finally wipe out X.A.N.A. for good.
He loved playing the piano, as seen in the Aelita's memory-flashbacks. He also had a wife, who had mysteriously disappeared and whose whereabouts are currently unknown.
- New Order (in a flashback)
- Deja Vu (in visions)
- Franz Hopper (as a polymorphic specter)
- The Key (in memory-flashbacks)
Code Lyoko Evolution
- There is a real-life computer scientist who's last name is "Hopper",  though the writers stated it is just a coincidence.
- His only appearence in the present was in the shape of a white glowing orb with a magneta aura to save Aelita, but also has life-points like everyone else on Lyoko.
- In one episode of the french version of Code Lyoko, he was voiced by Mathieu Moreau.
- Hopper was revealed to have worked with Tyron, who is one of the main villains in Evolution.
|Jeremie Belpois | Aelita Schaeffer | Odd Della Robbia | Yumi Ishiyama | Ulrich Stern | William Dunbar | Franz Hopper|
|Elisabeth Delmas | Jim Morales | Suzanne Hertz | Mrs. Hopper | Mr. Delmas|
|| Kiwi | Herb Pichon | Nicholas Poliakoff|
|XANA | Monsters|