Cartoon Network put out this description of the KND series with the 20th Anniversary here: “A mysterious treehouse hidden from adults is the headquarters for five friends known as Kids Next Door.

Cartoon Network has a fun description of the KND series: “A mysterious treehouse hidden from adults is the headquarters for five friends known as Kids Next Door. These 10-year-olds take on adults to ...

There are no showtimes for Codename: Kids Next Door: Operation Z.E.R.O.. You can stream it or buy it on digital platforms below.

A crossover with The Grim Adventures of Billy and Mandy and Codename: Kids Next Door. While Billy's Dad is underwear shopping, Billy wears his dad's lucky pants, and accidentely rips them with Grim's ...