Top 10 Examples of Base-Breaking Cartoon/Anime Characters

Basically, a character that is extremely divisive among a show's fanbase. They may have a very vocal hatedom.
https://tvtropes.org/pmwiki/pmwiki.php/Main/BaseBreakingCharacter

Scrappies (who are generally hated) don't qualify, and neither do Ensemble Darkhorses (characters who are well-liked).
The Top Ten
1 Brian Griffin (Family Guy) Brian H. Griffin, popularly known without his middle initial as Brian Griffin, is a fictional character from the animated television series Family Guy.
2 Serena (Pokémon XY) Serena has proven to be a kind and polite girl but she can also be openly rebellious towards her mother, Grace. In Kalos, Where Dreams and Adventures Begin!, she refused to wake up when Grace ordered her to, and gave a sassy response to her mother's call to watch the news. This tumultuous relationship was best demonstrated when Grace made her practice Rhyhorn riding, an activity Serena had hated doing. However, their relationship is also very loving as shown in later episodes. Although shown to have a strong will, Serena can be sensitive and insecure at times as seen in Battling with Elegance and a Big Smile!. When she was frustrated with her Pokémon, she lashes out when at her limit and leaves ...read more.
3 Patrick Star (SpongeBob SquarePants) Patrick Star is a fictional character in the American animated television series SpongeBob SquarePants, and he is one of the 10 main characters in the show. He is voiced by actor Bill Fagerbakke, who also voices numerous other characters on the show. Created and designed by marine biologist and cartoonist ...read more.
4 SpongeBob SquarePants (SpongeBob SquarePants) SpongeBob SquarePants is a fictional character and the titular character and protagonist of the American animated television series of the same name.
5 Luan Loud (The Loud House) Luan Loud is a main character in The Loud House. She is the fourth-oldest child in the Loud family and second youngest of the five older sisters, at 14 years old. Her most annoying habit is telling bad jokes and puns and pulling pranks.
6 Pearl (Steven Universe) Pearl is a fictional character from the 2013 animated series Steven Universe, created by Rebecca Sugar. She is a "Gem", a fictional alien being that exists as a magical gemstone projecting a holographic body. ...read more.
7 Lisa Simpson (The Simpson) Lisa Marie Simpson is a fictional character in the animated television series The Simpsons. She is the middle child and most intelligent of the Simpson family.

Same as Brian and Serena.

8 Peter Griffin (Family Guy) Peter Griffin is the main protagonist and titular character of the American animated sitcom Family Guy.
9 Roger Smith (American Dad)

While he's a Hate Sink (characters that are intended to be hated), enough people find him funny for him to be this.

10 Zapp Brannigan (Futurama) Zapp Brannigan is a fictional character in the animated sitcom Futurama. He is voiced by Billy West, but was originally intended to be voiced by Phil Hartman, with West taking over the role after Hartman's death.
The Contenders
11 Vegeta (Dragon Ball Z) Vegeta is an anime fictional character from the anime series, Dragon Ball Z, created by Akira Toriyama.
12 Lily Loud (The Loud House)
13 Atlas (Astro Boy, 2003)
14 Bender (Futurama) Bender Bending Rodríguez is a fictional character who is one of the main characters in the animated television series Futurama. He was created by series creators Matt Groening and David X. Cohen and is voiced by John DiMaggio.
15 Goku (Dragon Ball Z) Son Goku (Kakarrot) is the main protagonist in Dragon Ball franchise created by Akira Toriyama in 1984. He has many abilities like, super strength, utilization of ki, flight, teleportation, super speed, enhanced reflexes, and Super Saiyan transformation that increase strength, speed, and durability. ...read more.
16 Eustace Bagge (Courage the Cowardly Dog) Eustace Bagge is a fictional character from the Cartoon Network animated series, Courage the Cowardly Dog.
17 Edward Elric (Fullmetal Alchemist) Edward Elric, commonly nicknamed Ed, is a fictional character and the protagonist of the Fullmetal Alchemist manga series and its adaptations created by Hiromu Arakawa.
18 Numbuh 1 (Codename: Kids Next Door)
19 Sailor Mars (Sailor Moon) Rei Hino, better known as Sailor Mars, is a fictional character in the Sailor Moon manga series written and illustrated by Naoko Takeuchi.
20 Revy (Black Lagoon) Rebecca Lee, mainly referred to as Revy, and sometimes Two Hands, is the main female protagonist of the Black Lagoon series.
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