Although South Park is an animated cartoon, it's definitely not meant for children. Airing on Comedy Central, this adult cartoon follows the adventures of four 10-year-old elementary student boys known as Stan, Kyle, Cartman, and Kenny. The show's content does its best to offend every group possible in a humorous way.

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What makes the content of this show so vulgar and immature are the characters. Throughout the series, fans are introduced to a plethora of characters who are so immature they're comedic gold. In fact, fans will not believe how immature some of these characters are capable of being.

8 Butters Stotch Is An Innocent Kid Who Has A Secret Immature Side To Him

Butters Stotch smiles in South Park.

Butters is a friend to the main four boys and also one of their classmates at South Park Elementary. Butters is known as one of the few characters in the show who's innocent. However, because of this, he can be quite naive, and he's often manipulated by Cartman into doing horrible things. Despite being perceived as innocent by everyone, Butters also has a secret immature side to him. For example, when the main friend group fired Butters as their new friend, Butters created the evil alter ego of Professor Choas and swore to flood the town of South Park.

7 Craig Tucker Is A Bully That Likes To Randomly Give People The Bird

Craig Tucker from South Park

Craig Tucker is another classmate of the main four boys at South Park Elementary, Craig is the leader of his own group of kids, who are the rivals of the main characters. Craig has a weird passion for randomly flipping people off, which he gets from his family who also love to flip people off.

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On top of that, Craig is a bully at school who likes to cause all sorts of trouble with the other students. However, compared to other characters, bullying is one of the least immature things a character has done.

6 Jimmy Valmer Is A Disabled Character Who Wants To Be A Stand-Up Comedian

Jimmy Valmer gets ready in South Park

Jimmy Valmer is a disabled and optimistic character who dreams of becoming a stand-up comedian and often tells jokes. For example, he and Cartman created an immature joke about linking fishcakes and homosexuality. Jimmy is also an immature character, and in one episode, he starts taking steroids to beat everyone at the Special Olympics. His steroid use got so bad he ended up hitting his mother and girlfriend out of rage.

5 Chef Works At The School's Cafeteria And Gives The Kids Inappropriate Advice

Chef from South Park

The Chef is a minor character within the show and is the cook for the cafeteria at South Park Elementary. The Chef not only cooks up food for the children but, rather strangely, gives them inappropriate advice about intercourse. Whenever Chef is explaining his advice to the children, it usually ends up with him singing a song about intercourse or his own personal and sex stories. Consequently, there's no doubt Chef is one of the most immature characters in the whole series.

4 Gerald Broflovski Trolls The Kids At South Park On The Internet

Gerald Broflovski from South Park

Gerald Broflovski (aka Skankhunt42) is the father to Kyle, who's one of the main four boys in the show. Gerald is one of the many adults on the show who display an absurd amount of immature behavior.

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Despite being a father and an adult, Gerald has a secret online account named Skankhunt42, which he uses to troll and cyberbully everyone on the internet. His internet alias first bullied all the girls at South Park Elementary, and because of his immature ways, everyone thought the troll was Eric Cartman.

3 Mr. Garrison Is A Teacher Who Doesn't Know The Curriculum He's Supposed To Be Teaching

Mr. Garrison from South Park

Mr. Garrison is a 4th-grade teacher at South Park Elementary School, and despite his humble profession, has proven himself one of the most controversial characters. Although he's a teacher, Mr. Garrsion teaches the students more about pop culture because he doesn't know the curriculum he's supposed to be teaching. Being a horrible teacher isn't the only thing that makes Mr. Garrsion an immature character. He's also racist. In one episode, he even convinced the whole town to scare away a minority group that was hoping to move in.

2 Stan's Father Randy Marsh Often Gets Into All Sorts Of Trouble

Randy Marsh in prison from South Park

Randy Marsh is a geologist and father to Stan, one of the four main characters in the show. Despite being an adult, Randy takes second place as being one of the most immature characters on the show. Although he's an adult, Randy tries to retain his youth, which causes him to get in all sorts of trouble.

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During the COVID-19 special, after a wild vacation in China with Mickey Mouse, Randy discovers he was the one to cause the pandemic. However, instead of taking the blame, Randy does his best to hide the fact that he was the one who ruined everything.

1 Eric Cartman Takes First Place As The Most Immature Character In South Park

Eric Cartman forms a scheme in South Park.

Due to his ludicrous actions on South Park, Eric Cartman is the most immature character in cartoon history. Cartman is one of the four main characters and has a knack for being sexist, racist, ableist, and any other 'ist' out there. Because of this, Cartman makes fun of any minority group without hesitation for his own fun and enjoyment. He even pretended to have a disability so he could participate in the Special Olympics, all because he wanted to win the grand prize.