![Codename: Kids Next Door](https://image.tmdb.org/t/p/w342/ppM8Pl6e8JIr39HPLRFgqDH3Vf1.jpg)
6 Season
139 Episode
Codename: Kids Next Door - Season 3 Episode 12 Operation: K.A.S.T.L.E.
Numbuh 3 takes her little sister Mushi for a ride through the Rainbow Monkey Sugar Coated Castle of Love, but what promises to be a day of fun is ruined when King Sandy and his knights attack! The insane sovereign has never given up in his quest to marry Numbuh 3, and he threatens to destroy the Rainbow Monkeys unless Kuki agre
- Year: 2007
- Country: United States of America
- Genre: Animation, Action & Adventure, Comedy, Sci-Fi & Fantasy, Family
- Studio: Cartoon Network
- Keyword: gadget, secret organization, mission, spy hero, kids
- Director: Tom Warburton
- Cast: Ben Diskin, Lauren Tom, Dee Bradley Baker, Cree Summer