Cartoon Network/What Planet Are You From? (2000)

Cast

 * Dexter (from Dexter's Laboratory) as Harold Anderson
 * Sarah (from Ed, Edd n Eddy) as Susan Anderson
 * Numbuh 1 (from Codename: Kids Next Door) as Perry Gordon
 * Numbuh 2 (from Codename: Kids Next Door) as Graydon
 * Numbuh 3 (from Codename: Kids Next Door) as Helen Gordon
 * Numbuh 4 (from Codename: Kids Next Door) as Richard Jones
 * Numbuh 5 (from Codename: Kids Next Door) as Rebecca
 * Bloo (from Foster's Home for Imaginary Friends) as Randy
 * Jane Doe (from Camp Lazlo) as Rita
 * Eduardo (from Foster's Home for Imaginary Friends) as Don Fisk
 * Dee Dee (from Dexter's Laboratory) as Nadine Jones
 * May Kanker (from Ed, Edd n Eddy) as Madeline
 * Fionna (from Adventure Time) as Janice