1 Plankton - Spongebob
Sheldon James Plankton, or simply Plankton, is a character in the Nickelodeon animated television series SpongeBob SquarePants.
He just want to get a recipe? Why?!
2 Dr. Doofenshmirtz - Phineas & Ferb
Along with Plankton, he looses in almost every episode.
3 Mojo Jojo - Powerpuff Girls
Mojo Jojo is a fictional character from the American animated television series, The Powerpuff Girls, created by animator Craig McCracken for Cartoon Network.
He was cool though, but he sucked - EliHbk
4 Ice King - Adventure Time
The Ice King is a character in the American animated television series Adventure Time. A supposedly evil wizard capable of creating and manipulating ice and snow, he is the self-proclaimed king of the Ice Kingdom, a land of ice he claimed as his own and lives in in company of many penguins.
Always ends up getting beat up by Finn and Jake. - AlphaQ
Technically he's a good guy. - JustMonika
5 Mr. Crocker - Fairly Oddparents
6 Foop - Fairly Odd Parents
7 Zim - Invader Zim
Zim is the titular protagonist and anti-hero of the American animated series Invader Zim, created by Jhonen Vasquez for Nickelodeon.
8 Aku - Samurai Jack
Aku is a fictional character and the main antagonist of Samurai Jack, an American animated television series created by Genndy Tartakovsky for Cartoon Network.
9 Sideshow Bob - The Simpsons
Dr. Robert Underdunk Terwilliger, better known as Sideshow Bob, is a recurring character in the animated television series The Simpsons.
10 Mandark - Dexter's Laboratory
Susan "Mandark" Astronomanov is the main antagonist in the American animated series Dexter's Laboratory. He is Dexter's rival and later mortal nemesis who often seeks to destroy both Dexter and his lab to prove once and for all that he is the superior genius. He is voiced by Eddie Deezen.
? Eva - Total Drama Island
? Ezekiel - Total Drama Island
11 Wile E. Coyote - Looney Tunes
12 Gideon - Gravity Falls
He want Mabel to love him but just can't. Sorry, underrated ten year old. He does come good at the end though. Sorta.
13 Amanda Killman - Bunsen Is a Beast
14 Lucy Simian - The Amazing World of Gumball
15 The Brain - Animaniacs
16 Pinky - Animaniacs
17 Starscream - Transformers
Starscream is a fictional character in the Transformers franchise. He is one of the most frequently occurring characters in the Transformers fictional work, appearing in almost all versions of the story.
He Got Killed In 20 Seconds After He Became King. - TheCartoonGuy
FINALLY I AM KING! I AM AWESOME AND TOGETHER WE SHALL BLARGH! *PSHHTTPF... WASTED*
18 Flip - The Loud House
19 Lola Loud - The Loud House
Lola Loud is a fictional character from The Loud House and the third youngest child of the Loud Family and Lana's younger twin sister, Lola is arrogant, smart mouthed, spoiled, and is a tattle-tale, like Lori despite her selfish behavior deep down she's compassionate, she shares a room with her twin ...read more.
20 Tom - The Tom and Jerry Show
Thomas "Tom" Cat is a fictional character and one of the title characters in Metro-Goldwyn-Mayer's series of Tom and Jerry theatrical cartoon short films.
21 Janja - The Lion Guard
Janja is the main antagonist of the first season and later became one of the three secondary antagonists (behind Scar) of the second season of Disney Junior animated series The Lion Guard.
He is a big sucker and insult to this species. Can't even find his own food due to the rotten Lion Guard not letting his clan (and other Outlanders and inhabitants outside the Pride Lands ) hunt or eat.
22 Cobra Commander - G.I. Joe
Cobra Commander is a fictional character from the G.I. Joe: A Real American Hero toyline, comic books, and animated series.
23 Winslow - CatDog
24 Angelica Pickles - Rugrats
Angelica Pickles is a cartoon character who appears in the Nickelodeon shows Rugrats, All Grown Up!, and Rugrats Pre-School Daze, and is among one of the series' original characters.
25 Sarah - Ed, Edd N Eddy
26 Jonny 2x4 - Ed, Edd n Eddy
27 Team Rocket - Pokemon