List of Stealth Premieres

Over the course of the Cartoon Network's history, the network and its sister channel, Adult Swim, have debuted various of their programs in obscure, unpromoted premieres at odd timeslots. These are known as "stealth premieres". This list is dedicated to listing every known one.
Program 	Episode 	Stealth Premiere 	Official Premiere 	Notes
A Day in the Life of Ranger Smith 	N/A 	December 28, 1998 	September 24, 1999	
The What a Cartoon! Show 	Nikki 	December 14, 1999 	June 30, 2000 	Aired as part of the Cartoon Cartoon of the Day block.
The What a Cartoon! Show 	The Grim Adventures of Billy & Mandy: Meet the Reaper 	December 27, 1999 	June 9, 2000 	
The What a Cartoon! Show 	Foe Paws 	December 27, 1999 	July 7, 2000 	
The What a Cartoon! Show 	Thrillseekers: Putt 'n' Perish 	December 27, 1999 	November 3, 2000 	
JBVO 	Pilot 	December 27, 1999 	UNAIRED 	The pilot never aired in the rotation of the series.
The Lewis Lectures 	N/A 	December 21, 2000 	March 31, 2002 	A rejected Adult Swim pilot.
Sealab 2021 	Radio Free Sealab 	December 21, 2000 	September 9, 2001 	
The Brak Show 	Goldish (aka Leave It to Brak) 	December 21, 2000 	September 2, 2001 	
Sealab 2021 	HappyCake 	December 30, 2000 	December 16, 2001 	
Sealab 2021 	I, Robot 	December 30, 2000 	October 7, 2001 	
Harvey Birdman, Attorney at Law 	Bannon Custody Battle 	December 30, 2000 	September 2, 2001 	
Aqua Teen Hunger Force 	Rabbot 	December 30, 2000 	September 16, 2001	The episode had additional scenes in its stealth premiere.
Ed, Edd n Eddy 	It Came from Outer Ed / 3 Squares and an Ed 	September 19, 2001	October 19, 2001 	
Dexter's Laboratory 	Streaky Clean / A Dad Cartoon / Sole Brother 	November 18, 2001 	November 23, 2001 	Aired as part of the "Dexter Goes Global" marathon.
Dexter's Laboratory 	Mind Over Chatter / A Quackor Cartoon / Momdark 	November 18, 2001 	December 7, 2001 	Aired as part of the "Dexter Goes Global" marathon.
Welcome to Eltingville 	Bring Me the Head of Boba Fett 	February 26, 2002 	March 3, 2002 	A rejected Adult Swim pilot.
The Finkel Files 	N/A 	July 18, 2002 	November 3, 2002 	A rejected Adult Swim pilot.
Whatever Happened to... Robot Jones?	Electric Boogaloo / The Groovesicle 	August 24, 2002 	September 6, 2002 	The pilot episode is typically paired alongside the other two episodes, including their stealth airing, but this list does not refer to it as it had already aired prior to this.
Ed, Edd n Eddy 	Ed Overboard / One of Those Eds 	August 24, 2003 	November 3, 2003 	
Home Movies 	Everybody's Entitled to My Opinion 	November 11, 2003 	February 1, 2004 	
The Grim Adventures of Billy & Mandy	The Problem with Billy 	March 21, 2005 	June 3, 2005 	
Camp Lazlo 	It's No Picnic 	July 8, 2005 	July 22, 2005 	Scheduled at the last minute as a time filler.
Codename: Kids Next Door 	Operation: D.U.C.K.Y. / Operation: D.I.A.P.E.R. 	September 25, 2005	October 14, 2005 	
Camp Lazlo 	Hallobeanies / Meatman 	October 1, 2005 	October 14, 2005 	
Ed, Edd n Eddy 	Cleanliness Is Next to Edness 	October 1, 2005 	November 11, 2005 	
Codename: Kids Next Door 	Operation: L.I.C.O.R.I.C.E. 	August 4, 2006 	August 10, 2006 	Aired as part of Miguzi's Countdown to Z.E.R.O. event.
Aqua Teen Hunger Force 	Carl Wash 	December 22, 2006 	March 25, 2007 	The episode was unfinished in its stealth premiere.
Pokémon: Diamond and Pearl 	Following a Maiden's Voyage! 	April 23, 2007 	June 4, 2007 	The episodes premiered on April 20, 2007 as a "movie" sneak peek called "New Adventure In Sinnoh", with some cut footage. The episodes aired in full the following days with the restored footage, but no advertisement or announcement was given. They were advertised as "new" and "premieres" in June.
Pokémon: Diamond and Pearl 	Two Degrees of Separation! 	April 24, 2007 	June 5, 2007 	The episodes premiered on April 20, 2007 as a "movie" sneak peek called "New Adventure In Sinnoh", with some cut footage. The episodes aired in full the following days with the restored footage, but no advertisement or announcement was given. They were advertised as "new" and "premieres" in June.
Pokémon: Diamond and Pearl 	When Pokémon Worlds Collide! 	April 25, 2007 	June 6, 2007 	The episodes premiered on April 20, 2007 as a "movie" sneak peek called "New Adventure In Sinnoh", with some cut footage. The episodes aired in full the following days with the restored footage, but no advertisement or announcement was given. They were advertised as "new" and "premieres" in June.
My Gym Partner's a Monkey 	Hygiene Hyjinks 	March 2008 	April 10, 2008 	When "The Butt of the Jake" got removed from the show's schedule, "Shark Fin Soupy" ended up pairing with "Hygiene Hyjinks" when the former episode was reshown again in March 2008, a month before it officially aired on April 10th.
Fat Guy Stuck in Internet 	Beast and Breakfast 	April 1, 2008 	June 23, 2008 	
The Venture Bros. 	The Doctor Is Sin 	April 1, 2008 	June 8, 2008 	An unfinished version of the first half of aired in its stealth premiere.
Delocated 	Pilot 	April 1, 2008 	November 2, 2008 	
Superjail! 	Superbar 	April 1, 2008 	September 28, 2008	The episode was presented as a "fine cut" in its stealth premiere.
The Young Person's Guide to History 	The Duel 	April 1, 2008 	November 2, 2008 	Pilot to a two-part special.
Metalocalypse 	Dethwedding 	April 1, 2008 	May 19, 2008 	
Robot Chicken 	Tubba Bubba's Now Hubba-Bubba 	April 1, 2008 	July 4, 2008 	
Moral Orel 	Grounded 	April 1, 2008 	October 14, 2008 	
The Garfield Show 	Orange and Black 	October 31, 2009 	November 2, 2009 	
Johnny Test 	Papa Johnny 	November 27, 2009 	December 3, 2009 	
Scaredy Squirrel 	Paddle Dogs 	November 6, 2011 	November 9, 2011 	Originally scheduled to premiere November 2, 2011 with an encore on November 6, 2011. The premiere was pre-empted but the encore wasn't, leaving the encore to air without a "New Episode" bug. The proper premiere aired with the bug.
The Amazing World of Gumball 	The Treasure 	October 25, 2012 	October 30, 2012 	
BeyWarriors: BeyRaiderz 	Hope 	January 25, 2014 	February 1, 2014 	This marathon was added to the schedule at the last minute, despite promotions (some of which aired during the marathon, including a banner during some of the episodes) declaring the "series premiere" as February 1, 2014. However, the official Beyblade Facebook page promoted the marathon.
BeyWarriors: BeyRaiderz 	Friends 	January 25, 2014 	February 8, 2014 	This marathon was added to the schedule at the last minute, despite promotions (some of which aired during the marathon, including a banner during some of the episodes) declaring the "series premiere" as February 1, 2014. However, the official Beyblade Facebook page promoted the marathon.
BeyWarriors: BeyRaiderz 	Reunion 	January 25, 2014 	February 15, 2014 	This marathon was added to the schedule at the last minute, despite promotions (some of which aired during the marathon, including a banner during some of the episodes) declaring the "series premiere" as February 1, 2014. However, the official Beyblade Facebook page promoted the marathon.
BeyWarriors: BeyRaiderz 	Challenge 	January 25, 2014 	February 22, 2014 	This marathon was added to the schedule at the last minute, despite promotions (some of which aired during the marathon, including a banner during some of the episodes) declaring the "series premiere" as February 1, 2014. However, the official Beyblade Facebook page promoted the marathon.
Rick and Morty 	The Rickshank Redemption 	April 1, 2017 	April 2, 2017 	Done as an April Fools prank; the premiere was accompanied by seven additional stealth reruns.
FLCL Alternative 	Flying Memory 	April 1, 2018 	September 8, 2018 	This episode was broadcast in Japanese in its stealth premiere.
Care Bears: Unlock the Magic 	The Beginning 	April 16, 2019 	September 19, 2021	
Care Bears: Unlock the Magic 	Share Your Care 	September 9, 2019 	December 26, 2021 	
Care Bears: Unlock the Magic 	Snow-verload 	December 16, 2019 	December 12, 2021 	
Genndy Tartakovsky's Primal 	Plague of Madness 	April 1, 2020 	October 11, 2020 	
Dream Corp LLC 	Tricky Ricky 	April 1, 2020 	November 2, 2020 	
Tigtone 	Tigtone and Tigtone's Island 	April 1, 2020 	September 28, 2020	
YOLO: Crystal Fantasy 	Maddison's Birthday Party 	April 1, 2020 	August 10, 2020 	
The Shivering Truth 	Beast of Both Worlds 	April 1, 2020 	June 1, 2020 	
Robot Chicken 	Callie Greenhouse in: Fun. Sad. Epic. Tragic. 	April 1, 2020 	July 20, 2020 	
Lazor Wulf 	Unoccupied Lane 	April 1, 2020 	December 14, 2020 	
JJ Villard's Fairy Tales 	The Goldilox Massacre 	April 1, 2020 	May 18, 2020 	
12 oz. Mouse 	Francis, Cheap & Out of Control 	April 1, 2020 	July 20, 2020 	
Tender Touches 	That's a Wrap 	April 1, 2020 	September 1, 2020 	
Smiling Friends 	Desmond's Big Day Out 	April 1, 2020 	August 3, 2020 	Pilot episode
Smiling Friends 	A Silly Halloween Special 	January 10, 2022 	January 17, 2022 	Scheduled at the last minute in order to get the entire first season up on HBO Max the following month,
Smiling Friends 	Who Violently Murdered Simon S. Salty? 	January 10, 2022 	January 17, 2022 	Scheduled at the last minute in order to get the entire first season up on HBO Max the following month,
Smiling Friends 	The Enchanted Forest 	January 10, 2022 	January 24, 2022 	Scheduled at the last minute in order to get the entire first season up on HBO Max the following month,
Smiling Friends 	Frowning Friends 	January 10, 2022 	January 24, 2022 	Scheduled at the last minute in order to get the entire first season up on HBO Max the following month,
Smiling Friends 	Charlie Dies and Doesn't Come Back 	January 10, 2022 	January 31, 2022 	Scheduled at the last minute in order to get the entire first season up on HBO Max the following month,
Royal Crackers 	Crumbling Empire 	April 1, 2023 	April 2, 2023 	Fast forwarded and ultimately incomplete.
The Eric Andre Show 	Bugs Weekly 	April 1, 2023 	June 5, 2023 	Fast forwarded and ultimately incomplete.
Teenage Euthanasia 	Remember Fun? 	April 1, 2023 	July 27, 2023 	Fast forwarded and ultimately incomplete.
Craig of the Creek 	Craig of the Campus 	May 28, 2023 	May 29, 2023 	Scheduled at the last minute as a time filler.
Dr. Stone 	Ray of Despair, Ray of Hope 	July 16, 2023 	July 30, 2023 	Accidentally aired early, skipping one episode. The episode that was supposed to air had aired the week after, however, promotions still referred to the reair of this episode as "all new".
Smiling Friends 	Gwimbly: Definitive Remastered Enhanced Extended Edition DX 4k (Anniversary Director's Cut)	April 1, 2024 	May 13, 2024 	Aired multiple times as part of Adult Swim's annual April Fool's stunt.
Category:Miscellaneous