2Regular ShowRegular Show is an American animated television series created by J. G. Quintel for Cartoon Network that premiered on September 6, 2010. The series revolves around the lives of two friends, a blue jay named Mordecai and a raccoon named Rigby—both employed as groundskeepers at a local park.
Regular Show already has a lot of adult humor. Regular Show could easily have a more mature episode on Adult Swim.
3Ed, Edd n EddyEd, Edd n Eddy is a Canadian-American animated comedy television series created by Danny Antonucci for Cartoon Network, and the sixth of the network's Cartoon Cartoons. The series revolves around three preteen boys: Ed, Edd "Double D," and Eddy—collectively known as "the Eds"—who live in a suburban ...read more.
Two words: Double D
4Johnny BravoJohnny Bravo is an American animated television series created by Van Partible for Cartoon Network, and the second of the network's Cartoon Cartoons.
5Teen Titans Go
The "Legs" episode was already pretty suggestive for Cartoon Network.
6Total DramaTotal Drama is a Canadian animated comedy television series which is a homage and parody to the conventions commonly found in reality television.
I feel like it could make a better adult show than a kid show if done correctly. - Turkeyasylum
7ChowderChowder is an American animated television series created by C.H. Greenblatt for Cartoon Network. The series follows an aspiring young child named Chowder and his day-to-day adventures as an apprentice in Chef Mung Daal's catering company.
8Codename: Kids Next Door
Codename: Adults Next Door
That's a good idea - dannyxd_96
9Adventure TimeAdventure Time is an American animated television series created by Pendleton Ward for Cartoon Network. The series follows the adventures of a boy named Finn (voiced by Jeremy Shada) and his best friend and adoptive brother Jake (voiced by John DiMaggio)—a dog with the magical power to change shape ...read more.
In all around the world, It doesn't have the PG advisory.
In Asia, It does have the PG advisory.
10The Grim Adventures of Billy & Mandy
11Dexter's LaboratoryDexter's Laboratory is an American comic science fiction animated television series created by Genndy Tartakovsky for Cartoon Network, and the first of the network's Cartoon Cartoons. The show is about a kid scientist named Dexter that has a sister named Dee Dee that keeps breaking into his lab.
There was a unreleased episode called ‘Rude removal’. That felt like an Adult Swim version of this show.
Find the episode and watch it if you are not a kid or early teen.
12The Looney Tunes Show
13Dragon Ball ZDragon Ball Z is a Japanese anime television series produced by Toei Animation. Dragon Ball Z follows the adventures of Goku who, along with the Z Warriors, defends the Earth against evil. The action adventures are entertaining and reinforce the concept of good versus evil. Dragon Ball Z teaches valuable ...read more.
This show is already on adult swim.
14Uncle GrandpaUncle Grandpa is an American animated television series created by Peter Browngardt for Cartoon Network that premiered on the network on September 2, 2013. The series is based on Browngardt's animated short of the same name from The Cartoonstitute.
15Rancho Del Sol
It has a little bit of bad language in it.
16The Marvelous Misadventures of FlapjackThe Marvelous Misadventures of Flapjack is an American animated television series created by Thurop Van Orman for Cartoon Network that premiered in North America on June 5, 2008. It stars creator Thurop Van Orman as the voice of Flapjack, a naive young boy who was raised by a whale named Bubbie and ...read more.