1 Invader ZIM
Invader Zim is an American animated television series created by Jhonen Vasquez for Nickelodeon. The series centers on an extraterrestrial named Zim from the planet Irk, and his mission to conquer Earth and enslave the human race along with his malfunctioning robot servant GIR.
It needs a second season - christangrant
Without a doubt
This is old news, but it's getting a new T.V. movie soon. - ModernSpongeBobSucks
It's so cool I watched it when I was little it was really COOL :DD and now I watch it now but they dghtve delted it
2 Courage The Cowardly Dog
Courage the Cowardly Dog is an American animated horror comedy television series created by John R. Dilworth for Cartoon Network as part of the network's Cartoon Cartoons block.
3 Danny Phantom
Danny Phantom is an American animated series created by Butch Hartman for Nickelodeon. It was produced by Billionfold Studios and distributed in Canada by Nelvana, a Canadian animation company. The series follows a teenage boy who, after an accident with an unpredictable portal between the human world ...read more.
4 Beavis and Butt-head
Beavis and Butt-Head is an American animated sitcom created and designed by Mike Judge. The series originated from Frog Baseball, a 1992 short film by Judge originally aired on Liquid Television.
We need these guys to make fun of the stuff that went on since they last appeared - christangrant
5 The Grim Adventures of Billy & Mandy
The Grim Adventures of Billy & Mandy (also known as Billy & Mandy) is an American animated television series created by Maxwell Atoms for Cartoon Network, and is the 14th of the network's Cartoon Cartoons (albeit namely when it was part of Grim & Evil; the show is considered separate from Cartoon Cartoons ...read more.
Grim Adventures of Billy & Mandy was very original and hopefully it gets a reboot. - spodermanfan1000
6 Codename: Kids Next Door
7 Johnny Bravo
Johnny Bravo is an American animated television series created by Van Partible for Cartoon Network, and the second of the network's Cartoon Cartoons.
8 Hey Arnold!
9 Ren and Stimpy
The Ren & Stimpy Show, often simply referred to as Ren & Stimpy, is an American animated television series created by John Kricfalusi for Nickelodeon.
10 Rocko's Modern Life
Rocko's Modern Life is an American animated television series created by Joe Murray for Nickelodeon. The series centers on the surreal life of an anthropomorphic Australian-immigrant wallaby named Rocko as well as his friends: the gluttonous steer Heffer, the neurotic turtle Filburt, and Rocko's faithful ...read more.
11 The Adventures of Jimmy Neutron: Boy Genius
Rugrats is an American animated television series created by Arlene Klasky, Gábor Csupó and Paul Germain for Nickelodeon.
13 Dexter's Laboratory
Dexter'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.
In January, Wanner brothers got control of it and started a rumor of a CGI film in September
14 Sonic (SatAM)
15 Teen Titans
Teen Titans is an American animated television series created by Glen Murakami, based on the DC Comics characters of the same name.
The real one not the awful Teen Titans Go - christangrant
16 My Life as a Teenage Robot
My Life as a Teenage Robot is an American animated science fantasy television series created by Rob Renzetti for Nickelodeon.
17 The Powerpuff Girls
The Powerpuff Girls is an American animated television series created by animator Craig McCracken for Cartoon Network. The main characters of this show are Blossom, Bubbles, and Buttercup. The show is about the Professor Utonium creating three little superhero girls that save the day from villains. ...read more.
Replace the awful reboot with the original one - christangrant
I agree. Why not air the original instead? This new one is terrible. - NerdBunny
18 House of Mouse
19 Gravity Falls
Gravity Falls is an American animated television series produced by Disney Television Animation that first aired on Disney Channel, and then on Disney XD from June 15, 2012 to February 15, 2016. The series follows the adventures of Dipper Pines and his twin sister Mabel in the fictional town of Gravity ...read more.