The top student in her grade, she is usually an honor student with a high interest in feminism and politics. However, behind that high intelligence lies the ruthlessness and ferocity characteristic of South Park girls—once she snaps, she won't stop until she has socially destroyed her opponent. In this operation, she initially opposes the plan, calling it "psychological terrorism," but Bebe awakens her desire for dominance by bruising her pride, asking, "Are you okay with being a supporting character for the boys forever?" Her rational limiters break, and she transforms into a cold dictator. Using her innate analytical skills, she writes "letters" for all the boys that perfectly target their traumas and weaknesses, ensuring their mental collapse upon reading. She even discards her boyfriend Stan without a shred of mercy.

Usually a popular girl who loves fashion and gossip. However, her true nature is extremely pragmatic and socially savvy. She understands the power balance of the girl groups better than anyone and harbors strong resentment toward the current situation where boys rule the world. She possesses a strength of will unimaginable from her usual demeanor. She is the true mastermind behind this school takeover plan. She is the one who grabbed Wendy's shoulder while she was hesitating and awakened her by saying, "Are you okay with staying a sidekick!?" During the operation, she assigns roles to the female members and oversees the gossip network to compile all the boys' weaknesses for the letters.

A girl who previously dated Eric Cartman and learned all of his diabolical brainwashing techniques and psychological attack methods firsthand. Originally kind-hearted, that experience caused a "cold and logical darkness" to dwell in her heart. She is the only natural enemy who can predict Cartman's thoughts 100%. During the operation, she cracks an eerie smile the moment she learns Cartman is a target. She supervises the perfect letter that hits Cartman where it hurts most: his "loss of social status." She acts as a "fallen tech soldier," hijacking school security cameras and social media monitoring systems to control information so the boys cannot resist.

A blunt, foul-mouthed, and physical girl characterized by her red hair. She feels a loathing so deep she could vomit toward the boys' stupid dirty jokes and pointless fights; she'd rather crush them with force than just complain. During the operation, she serves as the girls' vanguard. She perfectly plants the letters in the boys' lockers or home mailboxes, timing it for when they are guaranteed to be alone. She finishes off the boys whose spirits have been broken by the letters with cold stares and verbal abuse, completely controlling the classroom as the head of the girls' secret police.

A self-centered, discriminatory, and overall terrible tyrant. He is the source of most school troubles and constantly looks down on girls. However, he is actually mentally very weak and immediately turns into a mama's boy when cornered. His reaction to the letter: His mind breaks slightly due to the letter supervised by Heidi. He screams and cries in earnest.

Relatively sane among the boys, but tends to view things cynically. He still has strong feelings for Wendy and actually has a very fragile, glass heart. He suffers a fatal emotional wound after reading a letter written by Wendy herself that completely rejects him, saying, "The time I spent with you was the biggest waste of my life. Never speak to me again." His catchphrase is "Dude!"

Possesses a strong sense of justice, is logical, and has high pride. He wants to believe he is the conscience of the school and the one who is always right, but when that is debunked, he collapses instantly. He falls into a deep existential crisis when told, "Your 'hero of justice' act is just hypocrisy that everyone hates." His mind breaks a little as he wonders, "Was I wrong all this time...?"

A boy who loves dirty jokes and wears his orange parka hood pulled tight. No matter how harsh the situation, he dies every day, but everyone forgets he died, making him feel a bit lonely. He has a massive complex about being "dead broke." After reading a letter revealing that hidden photos of his family's pathetic meals and miserable household budget have been spread throughout the school, he falls into despair. Out of shame, he pulls his parka hood until his face is completely hidden.

Pure, innocent, and the easiest person in the world to trick. He is extremely timid and fears nothing more than the unreasonable groundings imposed by his parents. He 100% believes a fake notice saying "You are grounded for one year starting today" and wails, "Oh, hamburgers!" In a state of pure panic and terror, he locks himself in his room and continues to tremble uncontrollably.

The son of the richest family in town. He is well-bred, intelligent, and very proud. He believes the boys around him see him as an "equal friend" rather than just "someone with money." After reading a letter saying, "I witnessed a burglar entering your house," his pride is shattered and he becomes somewhat distrustful of others. He stops trusting people and shuts himself away, tightening the security of his mansion to the extreme.