Cyberchase

Cyberchase is an animated science fantasy children's television series that airs on PBS Kids. The series centers around three children from Earth: Jackie, Matt and Inez, who are brought into Cyberspace, a digital universe, in order to protect it from the villainous Hacker (Christopher Lloyd). They are able to foil Hacker's schemes by means of problem-solving skills in conjunction with basic mathematics, environmental science and wellness. In Cyberspace, they meet Digit (Gilbert Gottfried for the first thirteen seasons, later Ron Pardo as of the fourteenth), a "cybird" who helps them on their missions. Cyberchase was created by Sandra Sheppard, developed for children ages 8 to 11, and premiered on PBS Kids on January 21, 2002. In 2010, after season 8, Cyberchase went on hiatus, but it returned in 2013 for a ninth season, focusing more on environmental science. Cyberchase is the sixth longest-running animated series in the United States, behind The Simpsons, South Park, Family Guy, SpongeBob SquarePants, and Arthur. It is also the second longest-running animated PBS Kids series, behind Arthur.