The Codename: Kids Next Door episodes "Operation: O.F.F.I.C.E./Operation: A.R.C.T.I.C." premiere.
10[]
The Codename: Kids Next Door episodes "Operation: L.I.C.E./Operation: L.I.Z.Z.I.E." premiere.
12[]
Adult Swim begins airing on weekdays, with the exception of Fridays. The Saturday action block is also dropped until April 17, 2004. In addition, the block receives its first rebrand, as the bumpers featuring old people swimming are replaced with bumpers featuring pages of a handbook. To celebrate the rebrand, reruns of soon-to-be cancelled FOX show, Futurama, are added to the block, a move which later results in the show’s revival on Comedy Central.
17[]
The Codename: Kids Next Door episodes "Operation: T.H.E.-F.L.Y./Operation: P.O.I.N.T." premiere.
20 []
The Powerhouse bumpers recieve a major overhaul. The "Powerhouse" remixes are inexplicably dropped, replaced with background music from the shows themselves. Also, prior to 2003, some shows had multiple patterns of bumpers, which were unified into one pattern afterward. In addition, the majority of the bumpers seen from 2003 to 2004 only had the blue and purple backgrounds, as the green, yellow, and dark blue bumpers were long gone by the beginning of 2003 (with the strange exceptions of the "Coming Up Next" bumpers until May 2003).
24[]
The Codename: Kids Next Door episodes "Operation: C.A.B.L.E.-T.V./Operation: C.A.M.P." premiere.
31[]
The Codename: Kids Next Door episode "Operation: C.A.K.E.D." premieres.
February[]
7[]
The Codename: Kids Next Door episodes "Operation: T.O.M.M.Y./Operation: C.H.A.D." premiere.
21 []
The Codename: Kids Next Door episodes "Operation: P.I.A.N.O./Operation: Z.O.O." premiere.
A Cartoon Network special, The Groovenians, aired as a "special presentation". It had previously aired on Adult Swim in October 2002.
28[]
The Codename: Kids Next Door episodes "Operation: Q.U.I.E.T./Operation: R.A.I.N.B.O.W.S." premiere.
Grim and Evil is split into two series, The Grim Adventures of Billy & Mandy and Evil Con Carne.
Cartoon Network’s 18th original series, The Grim Adventures of Billy & Mandy premiered first, with the episodes "Toadblatt's School of Sorcery/Educating Grim/It's Hokey Mon!"
14[]
The fourth and final season of Samurai Jack premieres with the episode "Jack vs. the Ninja".
20[]
The Grim .Adventures of Billy & Mandy episodes "Night of the Living Grim/Brown Evil (Part 1 & 2)" premiere.
21[]
The Samurai Jack episode "Robo-Samurai vs. Mondo-bot" premieres.
27[]
The Grim Adventures of Billy & Mandy episodes "Mandy, the Merciless/Creating Chaos/The Really Odd Couple" premiere.
28[]
The Samurai Jack episode "Samurai vs. Samurai" premieres.
July[]
4[]
The Grim Adventures of Billy & Mandy episodes "Who Killed Who?/Tween Wolf" premiere.
11 []
The Grim Adventures of Billy & Mandy episodes "Grim in Love/Crushed/Love is "Evol" Spelled Backwards" premiere.
Cartoon Network’s 19th original series, Evil Con Carne premieres as a stand alone show, with the episodes "Gutless!/Day of the Dreadbots/League of Destruction".
18[]
The Grim Adventures of Billy & Mandy episodes "The Crawling Niceness/Smarten Up!/The Grim Show" premiere.
The Evil Con Carne episodes "Son of Evil/The Right to Bear Arms/The Trouble with Skarrina" premiere.
19 []
Teen Titans premieres with the episode "Final Exam".
25[]
The Grim Adventures of Billy & Mandy episodes "Son of Nergal/Sister Grim/Go-Kart 3000!" premiere.
August[]
1[]
The Grim Adventures of Billy & Mandy episodes "Terror of the Black Knight/Battle of the Bands/The Halls of Time" premiere.
The Evil Con Carne episodes "Go Spork/Boskov's Day Out/Cod vs. Hector" premiere.
15[]
The Grim Adventures of Billy & Mandy episodes "Grim for a Day/Chicken Ball Z" premiere.
The Evil Con Carne episode "Max Courage" premieres.
16[]
Samurai Jack concludes it's third season with the half-hour special "The Birth of Evil".
The Teen Titans episode "Forces of Nature" premieres.
23[]
Duck Dodgers premiered.
The Samurai Jack half-hour special "The Scotsman Saves Jack" premieres.
The Teen Titans episode "The Sum of His Parts" premiere.
24[]
The Ed, Edd n Eddy episodes "Ed Overboard/One of Those Eds" premiere.
September[]
5[]
Season 5 of The Powerpuff Girls premieres with the episodes "Monstra-City/Shut the Pup Up".
The Dexter's Laboratory episodes "Babe Sitter/Mountain Mandark/2Geniuses 2Gether 4Ever" premiere.
6 []
Cartoon Network's Fridays debuted, which was a very short-lived block until the new Fridays (a live-action format of CCF) comes in October.
12[]
The Powerpuff Girls episodes "Toast of the Town/Divide and Conquer" premiere.
The Dexter's Laboratory episodes "Height Unseen/Bygone Errors/Folly Calls" premiere.
19[]
The Powerpuff Girls episodes "Burglar Alarmed/Shotgun Wedding" premiere.
The Dexter's Laboratory episodes "Voice Over/The Blonde Leading the Blonde/Comic Stripper" premiere.
26[]
The Powerpuff Girls episodes "Save Mojo/Substitute Creature" premiere.
The Dexter's Laboratory episodes "Tee Party/Dexter's Wacky Races" premieres.
The Codename: Kids Next Door episodes "Operation: S.P.A.N.K./Operation: D.A.T.E." premiere.
17[]
The Codename: Kids Next Door episodes "Operation: S.U.P.P.O.R.T./Operation: T.A.P.I.O.C.A." premiere.
20 []
Despite Grim and Evil was officially ended after two seasons on October 18, 2002 in the US, the show premieres its third and last season on Cartoon Network UK.
24[]
The Codename: Kids Next Door episodes "Operation: M.O.V.I.E./Operation: F.A.S.T.-F.O.O.D."
31 []
The Codename: Kids Next Door episodes "Operation: S.H.A.V.E./Operation: O.O.M.P.P.A.H." premiere.
The Ed, Edd n Eddy episodes "Little Ed Blue/A Twist of Ed" premiere.
18[]
The Powerpuff Girls celebrates it's 5th anniversary.
19[]
The Samurai Jack episode "Jack and the Flying Prince and Princess" premieres
20 []
Dexter's Laboratory ends with the episodes "They Got Chops/Poetic Injustice/Comedy of Feathers" premiere.
21[]
The Codename: Kids Next Door episodes "Operation: T.H.E.-S.H.O.G.U.N./Operation: C.O.L.L.E.G.E." premiere.
24[]
The Samurai Jack episode "Jack vs. Aku" premieres.
25[]
The Powerpuff Girls episodes "Seed No Evil/City of Clipsville" premiere.
26 []
Time Squad aired its series finale, which was put on hold for several months after the previous episode's release due to background issues. Cartoon Network removed the show from reruns completely before moving it to the Cartoon Network app in 2020.
