[[caption-width-right:200:Where Epic Anime Lived]]

Toonzai, formerly The [=CW4Kids=], was a SaturdayMorningCartoon block on Creator/TheCW replacing Creator/KidsWB that began under its original name in May of 2008 before its rebranding in August 2010. Run by Creator/FourKidsEntertainment, Toonzai ran a mostly anime programming block that tailored to a younger audience.

It bit the dust in August 18, 2012, in favor of a new Saban-run block, Creator/{{Vortexx}}. The block ended with a ''Franchise/YuGiOh'' marathon.
!!Notable programs aired by Toonzai (Kids' WB holdovers marked with *):
* ''WesternAnimation/TheBatman''*
* ''WesternAnimation/{{Chaotic}}''
* ''Anime/DinosaurKing''
* ''[[Anime/DragonBallKai Dragon Ball Z Kai]]''
* ''WesternAnimation/JohnnyTest''*
* ''Series/KamenRiderDragonKnight''
* ''Anime/KirbyRightBackAtYa''
* ''WesternAnimation/MagiNation''*
* ''[[Anime/OjamajoDoremi Magical Doremi]]''
* ''WesternAnimation/SkunkFu''*
* ''Anime/SonicX''
* ''WesternAnimation/TheSpectacularSpiderMan''*
* ''Anime/TaiChiChasers''
* ''WesternAnimation/TeenageMutantNinjaTurtles2003''
** ''WesternAnimation/TurtlesForever''
* ''WesternAnimation/TomAndJerryTales''*
* ''WesternAnimation/VivaPinata''
* ''WesternAnimation/WinxClub''
* ''Anime/YuGiOh''*
** ''Anime/YuGiOhGX''
** ''Anime/YuGiOh5Ds''
** ''Anime/YuGiOhZexal''
!!This animation block provided examples of:
* TheArtifact: Most of the Creator/KidsWB shows the channel had in the beginning were only there to air the remaining episodes Kids' WB themselves couldn't. Quite tellingly, they were removed after they fufilled that quota.
* DarkerAndEdgier: Despite being heavily EditedForSyndication, ''Dragon Ball Z Kai'' is still quite violent.
* EarlyInstallmentWeirdness: As is noted above, before it was fully rebranded into Toonzai, a good chunk of its first couple of years was spent basically finishing the run of many Creator/KidsWB shows that started before that block's demise.
* {{Expy}} / FollowTheLeader: Of Creator/{{Toonami}}. Al Khan even cited it as an inspiration.
* GrandFinale: As stated above, its final broadcast was a ''Franchise/YuGiOh'', marking it as this both for the block and all of 4Kids' blocks in general. An ironic, yet also fitting end given prior to the lawsuit surrounding it, ''Franchise/YuGiOh'' was one of [=4Kids=] biggest properties in their prominence.
* [[LastOfHisKind Last Of Its Kind]]: Prior to its demise, this block was the only remaining children's block on American broadcast television which consists of new content meant to entertain, rather than years-old {{Rerun}}s of [[EdutainmentShow Edutainment Shows]] (CW stations usually fill the deadest spaces weekday mornings with E/I content on their own, usually from [=DiC=]). However, rather than let its demise mark [[EndOfAnAge the end of these]], the honor was passed to its successor, Creator/{{Vortexx}}.
* LighterAndSofter: Than Toonami, its inspiration. It's also worth noting that many shows aired that didn't originate on the block were this compared to the originals. Heck, ''[[Anime/DragonBallKai Dragon Ball Z Kai]]'' managed to be this compared not only to the original Japanese version, but even to the Creator/{{Nicktoons}} edit.
* SaturdayMorningCartoon