In 2005, the block was granted its own Nielsen ratings report from Cartoon Network due to targeting a separate demographic.
The block features stylistically varied animated and live-action shows including original programming, syndicated series mainly consisting of Fox animated programming, short films, original video animation, and anime, generally with minimal or no editing for content.
While the network features comedic and dramatic programs of all types, many of its programs are aesthetically experimental, transgressive, improvised, and surrealist in nature.
Thus, Adult Swim has become a source of conflict, with some saying that it is too controversial, while others noting that its ability to question the norm brings a level of surrealism and experimentalism that is welcome.
Sealab 2021, Harvey Birdman, Attorney at Law, Aqua Teen Hunger Force and The Brak Show all premiered unannounced; While entertaining pitches for a variety of adult-focused cartoons, Lazzo realized the potential for packaging them as a complete adult-focused block.
Different names were considered, including “ibiso”, which was said to be Spanish for “stop”, and “Parental Warning”, but he eventually settled on Adult Swim.
Most notably he would shout "All kids out of the pool".
The logo was the words "Adult Swim" in all capital letters, shown after a freeze frame of the footage. The block's original theme music, titled "D-Code," was a remix of "Mambo Gallego" done by the Melbourne musician Dust Devil, originally played by Latin jazz musician Tito Puente, Sr.
In the United States, Adult Swim has frequently aired adult animation features, anime, mockumentaries, sketch comedy, live-action, and pilots.
Shows may have sexual themes, frank sexual discussion, nudity, strong language, and graphic violence; in other words, programs that would be deemed inappropriate if aired during the day on Cartoon Network, when children would be watching.
Harvey Birdman Attorney at Law was the winner and the pilot was screened.