Codename: Kids Next Door, also known as Kids Next Door or by its initials KND, is an American animated television series created by Tom Warburton and produced by Curious Pictures in Santa Monica, California. The series debuted on Cartoon Network on December 6, 2002, and aired its final episode on January 25, 2008. The series came about as the result of a viewer’s poll by Cartoon Network.

The series centers on the adventures of five 10-year-old children who operate from a high-tech tree house. Their mission is to fight “crimes” against kids, such as homework and flossing, committed by adults, senior citizens, teenagers, and other “evil” children. They make up what is known as Sector V of a worldwide organization called the Kids Next Door. The show was also part of Cartoon Network’s series, Cartoon Cartoons, and is the 13th cartoon of the series. It returns on a show called Cartoon Planet.