Codename: Kids Next Door had three specials and one movie, all occuring during or after the final season of the series, besides Operation: N.A.U.G.H.T.Y., which occurred in Season 5.

Operation: I.N.T.E.R.V.I.E.W.S. is the series finale that ties up most of the loose ends and summing up all the events in the entire series.

The Lost Cases of the Tree House is an episode from Cartoon Network Latin America web series Villainous which takes place after the events of Operation: T.R.E.A.T.Y..

E# Code Mission A Mission B Original Airdate
n/a Operation: T.W.E.E.N.A.G.E.R. n/a, 2003
501 Operation: N.A.U.G.H.T.Y. December 6, 2005
M1 Operation: Z.E.R.O. August 11, 2006
S1 The Grim Adventures of the KND November 11, 2007
613 Operation: T.R.E.A.T.Y. November 23, 2007
614 Operation: I.N.T.E.R.V.I.E.W.S. January 21, 2008
n/a The Lost Cases of the Tree House August 18, 2018

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