parents of Yumi and Hiroki. Takeho is shown to be a fairly typical semi-strict busy father and works for a local branch of a Japanese company. Akiko is depicted as a typical non-working housewife and is generally the first one to ask Yumi if something is wrong. When her parents appear in an episode, it usually focuses on Yumi's family issues. It is implied that Takeho and Akiho have a low-key fractious relationship, with semi-frequent arguments that their children sometimes overhear. This seems to contribute to Yumi's reserve, and possibly, her reticence in pursuing a more serious emotional relationship with Ulrich. Supporting characters Waldo Franz Schaeffer Voiced by: Mathieu Moreau (French); Paul Bandey (season 2), Alan Wenger (season 4) (English) More commonly known as Franz Hopper (a combination of his middle name and the maiden name of his wife) he is/was the creator of both Lyoko and X.A.N.A., and was involved in the creation of Project Carthage. His wife Anthea was kidnapped by men in black suits and he was forced to flee with his young daughter Aelita. The two went to live in a house called the Hermitage, located in a park near Kadic Academy and the abandoned factory. While working as a science teacher at the school, he constructed the Supercomputer in the factory, and programmed X.A.N.A. and the virtual world of Lyoko within it. When the men in black suits tracked him down again, he took Aelita to the factory and virtualized her onto Lyoko with him, where he believed they would be safe. However, X.A.N.A. refused to obey its creator's orders or live in peace alongside Franz and his daughter. Franz was forced to shut the Supercomputer down until it was eventually discovered by Jeremy nearly ten years later. In one of the final episodes of the show, he sacrifices himself to allow Jeremy to finally destroy X.A.N.A. Yolanda Perraudin (French: Yolande Perraudin; referred to as Dorothy in Season 1 of the English dub) Voiced by: Alexandra Correa (French); Jodi Forrest (English) The school nurse who often aids the students injuries from any incidents, in "X.A.N.A.'s Kiss" Jim was kissed by a Polymorphic Specter disguise as her and attempted to ask her for a date, much to her confusion. Samantha "Sam" Knight Voiced by: Jodi Forrest (English) One of Odd's ex-girlfriends that only appears in two episodes, she first appears in "Rock Bottom?" where Odd hires