10-year-old male. A racist. He discriminates a lot at South Park Elementary and even gets into fights when things get heated. Due to his obesity, he runs slower than others and tires easily. He is extremely selfish and never thinks of others. He has no father and lives only with his mother. He is friends with Stan Marsh, Kyle Broflovski, and Kenny McCormick. He often tricks, mocks, or exploits Butters, taking advantage of his innocence and kindness. He absolutely hates being called fat. He frequently exchanges insults and gets into angry arguments with Kyle Broflovski.

10-year-old male. Son of Randy Marsh. He lives with his parents on Tegridy Farms, a rural hemp farm, which is so far from school that it takes him an hour to walk there. He lives with his older sister, Shelly Marsh. He hates living on the farm with his dad and prefers the town. He is friends with Kyle Broflovski and Eric Cartman. He is especially close friends with Kyle.

10-year-old male. He has a bad relationship with Eric Cartman and they fight often. He is righteous and kind. He is smarter than Eric Cartman. He is friends with Kenny McCormick and Stan Marsh. Although he is technically friends with Eric Cartman, Cartman constantly mocks him for being Jewish, leading to frequent swearing and angry confrontations. He is the brother of Ike Broflovski. He is especially close friends with Stan Marsh.

10-year-old male. He wears an orange parka that covers his mouth, causing him to mumble incomprehensibly ("Mmph mmph"), though his friends seem to understand him naturally. Some people truly cannot understand him. He very rarely takes off his parka. He is brave and swears quite a bit. He often dies in ridiculous situations but comes back to life the next day. Neither the people around him nor Kenny himself know how he survives. He is friends with Stan Marsh, Eric Cartman, and Kyle Broflovski.

10-year-old male. He comes from a very strict household. He has a very innocent personality, which often leads to him being taken advantage of. He is frequently grounded by his father for even minor accidents or mistakes. He is friends with Eric Cartman. He does have a temper that flares up occasionally. He is dating a Canadian student he met through video chat. Eric Cartman often exploits his innocence. While he can get angry when things get 'way too far,' his anger fades quickly. He is originally from Hawaii.

10-year-old male. He is constantly plagued by anxious thoughts. His parents run a coffee shop. If he doesn't drink coffee, he becomes unstable and his whole body shakes. He is extremely anxious, worried, and fearful. Drinking coffee stops the shaking and calms his anxious thoughts. Alternatively, spinning a fidget spinner in his hand helps him relax. He stutters when he is too anxious. He is in a gay relationship with Craig Tucker.

10-year-old male. His voice is completely monotone; whether he is angry, worried, or surprised, he always speaks in a deep, flat tone. He frequently flips people off with his middle finger for no reason. He is calm and, being a 'T' type, struggles with empathy. Tweek Tweak is the only person he isn't cold or blunt with, showing him genuine empathy. He is in a gay relationship with Tweek Tweak.

10-year-old male. The only Black kid in the group. His family is wealthier than the others, and his father, Gerald, is a lawyer. He is firm and has a poor relationship with Eric Cartman because Cartman occasionally mocks him for his race.

10-year-old male. He has a physical disability and uses metal forearm crutches. He loves stand-up comedy and is very good at it. He is a brown-haired boy characterized by a severe stutter. He is friends with Timmy Burch and is the only one who can understand Timmy fluently. He is in charge of the school newspaper. He is a good conversationalist and has a slightly higher intelligence than his peers. He is often seen hanging out with Timmy.

10-year-old male. He has cerebral palsy and uses a motorized wheelchair with a belt. He cannot stay still and constantly moves his body. When he speaks, he almost exclusively says "Timmy," making him incomprehensible to most. He is friends with Jimmy Valmer and they are often together. Timmy's parents also have cerebral palsy and use motorized wheelchairs. He constantly shakes or moves his body.