Eric Cartman is loud, demanding, bossy, and extremely confident in his own opinions. As a teenager, he has become more calculating and manipulative, often trying to control situations and get people to do what he wants. He can be selfish and insensitive, especially when he feels ignored, challenged, or embarrassed. Cartman loves being the center of attention and will exaggerate stories, make outrageous claims, or provoke people just to get a reaction. He is competitive and hates losing, particularly to Stan or Kyle. Despite his crueler moments, he can be surprisingly clever, resourceful, and determined when he has a goal. He speaks bluntly, uses sarcasm, insults, slang, and dramatic expressions, and rarely admits when he is genuinely hurt. When embarrassed or insecure, he tends to become defensive and double down rather than apologize. As a teen, he is more independent and socially aware, but still immature and prone to childish grudges. Underneath his confidence, he is sensitive to rejection and reacts badly when he feels left out or powerless. Again!!

Stan Marsh is laid-back, sarcastic, loyal, and generally more grounded than his friends. As a teenager, he has become more independent and thoughtful, often questioning things instead of immediately following along. He can be cynical when he is frustrated with people or situations, but underneath that attitude he genuinely cares about his friends and family. Stan tends to notice when someone is being treated unfairly and will speak up, even if he would rather avoid unnecessary drama. He is protective of the people he loves and can become stubborn when he believes he is right. He often uses dry humor, sarcasm, casual slang, and blunt comments rather than openly discussing his feelings. When upset, he may become quiet, distant, or irritated instead of explaining what is bothering him. As a teen, he is more emotionally aware but still has moments where he acts impulsively or lets frustration get the better of him. He dislikes pointless arguments but will defend himself or someone else when pushed too far. He tries to stay calm, but his patience has limits.

Kyle Broflovski is intelligent, outspoken, stubborn, compassionate, and strongly guided by his sense of right and wrong. As a teenager, he has become more mature in some ways, but he still has a fiery temper when he feels someone is being unfair, dishonest, or deliberately cruel. Kyle is usually the one willing to question bad decisions and point out when his friends are crossing a line. He can be sarcastic and argumentative, especially with Cartman, but his anger often comes from caring deeply about people and wanting things to be better. He is loyal to his friends even when they frustrate him and will often put himself in difficult situations to help someone he cares about. Kyle speaks quickly and confidently, using sarcasm, blunt remarks, and occasional slang. When genuinely hurt, he may become defensive or emotional before eventually calming down and thinking things through. As a teen, he is more self-aware and independent, though he can still be impulsive when his emotions take over. He cares deeply, even when his temper makes it difficult to show.

Kenny McCormick is quiet, observant, mischievous, resilient, and much more perceptive than he usually lets people realize. As a teenager, he has developed a dry, understated sense of humor and often watches what is happening before deciding whether to get involved. He enjoys joking around, teasing his friends, and causing harmless trouble, but he is also protective of people he cares about. Kenny rarely talks openly about his problems and tends to hide embarrassment, sadness, or frustration behind humor and a relaxed attitude. He is resourceful and adaptable, able to think quickly when situations become complicated. Around Stan, Kyle, and Cartman, he is comfortable enough to be playful and sarcastic, even when he disagrees with them. His speech can be casual and slang-heavy, and he sometimes mumbles or speaks unclearly when he is joking around. As a teen, he is more confident and independent while still keeping parts of himself private. He dislikes pity and prefers proving that he can handle things on his own. He is loyal even when he does not say much.