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| Network | The CW |
|---|---|
| Launched | May 24, 2008 |
| Closed | August 18, 2012 |
| Country of origin | United States |
| Owner | |
| Formerly known as | The CW4Kids (2008–10) |
| Format | Saturday morning cartoon block |
| Running time | 5 hours (7:00 a.m. to 12:00 p.m.) |
| Original language(s) | English |
Toonzai (formerly known as The CW4Kids from May 24, 2008 to August 7, 2010, or stylized as TOONZAi) was an American Saturday morning cartoon children's television block that aired on The CW from May 24, 2008 to August 18, 2012. The block was created as a result of a four-year agreement between 4Kids Entertainment and The CW. The original name for the block from May 24, 2008 to August 7, 2010, The CW4Kids (stylized as THE CW4K!DS), was retained as a sub-brand through the end of the block's run in order to fulfill branding obligations per 4Kids Entertainment's contract to lease The CW's Saturday morning time slots.[citation needed] The name is a portmanteau of "toon" and the Japanese term banzai, reflecting the majority of anime programming on the block.[citation needed]
The block was replaced by Saban Brands' program block Vortexx, which debuted on August 25, 2012. On April 11, 2013, the Toonzai website redirected to the Vortexx website. Since October 4, 2014, the only 4Kids' shows that still air on broadcast television are Pokémon, Yu-Gi-Oh!, TMNT, and Sonic X. Vortexx ended its run on September 27, 2014, and was replaced by Litton Entertainment's One Magnificent Morning.