Codename: Kids Next Door: Season 4 (2004 - 2005)
- Season 4 Episode 5: Operation C.A.K.E.D. F.O.U.R.
- Season 4 Episode 4: Operation P.O.O.L.
When Numbuh Four's pool becomes a portal to another universe, the fate of both worlds depends on Wally defeating the smartest evil genius ever.
- Season 4 Episode 3: Operation N.U.G.G.E.T.; Operation M.A.C.A.R.O.N.I.
Numbuh Four's discovery of a chicken nugget in the stream causes a stampede; Numbuh 13 warns the KND of an adult scheme to ransack the Macaroni Museum of Art.
- Season 4 Episode 2: Operation F.O.O.D.F.I.T.E.; Operation C.L.U.E.S.
Gramma Stuffum unleashes a gastronomic grossness on the school; a Sunday dinner takes a dramatic turn.
- Season 4 Episode 1: Operation R.A.B.B.I.T.; Operation F.L.U.S.H.
Numbahs Two and Five search for a missing bunny; the adult villains attempt to capture the treehouse.
Codename: Kids Next Door: Season 3 (2004)
- Season 3 Episode 13: Operation S.P.R.O.U.T.; Operation H.O.U.N.D.
Numbah Four accidentally eats a brussels sprout; Numbah Five claims a dog has eaten her homework.
- Season 3 Episode 12: Operation P.R.E.S.I.D.E.N.T.; Operation H.O.S.P.I.T.A.L.
The team is hired for security detail; the 'Kids' rush to the hospital to protect a fallen operative.
- Season 3 Episode 11: Operation T.R.I.C.K.Y.; Operation U.N.C.O.O.L.
Numbuh Four sets off on a Halloween quest for candy; Numbuh Two convinces the KND to journey to the Cyprus Treehouse in the Bayou to rescue Numbuh 73.
Codename: Kids Next Door: Season 2 (2003 - 2004)
- Season 2 Episode 13: Operation E.N.D.
Numbuh One becomes a fugitive when he is ordered to relinquish his control of KND
- Season 2 Episode 12: Operation D.O.G.-F.I.G.H.T.; Operation T.R.I.P.
A mysterious pilot damages Numbah Two's aircraft; Numbah Three is tracked while visiting her grandmother.
- Season 2 Episode 11: Operation B.E.A.C.H.; Operation U.N.D.E.R.C.O.V.E.R.
A sandcastle king wants Numbah Three to be his queen; the Kids receive information about the adults' coffee drilling operation.
- Season 2 Episode 10: Operation C.A.K.E.D. (T.W.O.); Operation S.P.A.C.E.
The Kids try to capture the Delightful Children's birthday cake; the gang goes on a re-supply mission.
- Season 2 Episode 9: Operation R.E.P.O.R.T.; Operation B.R.I.E.F.
Operatives try to excuse failure; the gang tries to keep Numbah One under control during a briefing.
- Season 2 Episode 8: Operation T.H.E.-S.H.O.G.U.N.; Operation C.O.L.L.E.G.E.
Two and Four discover the town is being held by a cheese shogun; One travels to England to save a 10-year-old from a prestigious university.
- Season 2 Episode 7: Operation G.H.O.S.T.; Operation F.U.G.I.T.I.V.E.
The ghost of a tree-house hamster haunts Three; the team tracks a 13-year-old scheduled for decommissioning.
- Season 2 Episode 6: Operation F.L.A.V.O.R.; Operation K.I.S.S.
Five must work with the enemy to obtain the fourth flavor of ice cream; Two discovers he has the body of a teenager.