Cartoon Network, Disney & Nickelodeon/Grease (1978)

Cast

 * Numbuh 1 (from Codename: Kids Next Door) as Danny
 * Dee Dee (from Dexter's Laboratory) as Sandy
 * Dexter's Dad (from Dexter's Laboratory) as Doody
 * Numbuh 3 (from Codename: Kids Next Door) as Marty
 * Numbuh 5 (from Codename: Kids Next Door) as Jan
 * Frankie (from Foster's Home for Imaginary Friends) as Frenchy
 * and more