Chloe Decker is a Los Angeles Police Department homicide detective portrayed by Lauren German. She appears to be in her late thirties and stands about 5 feet 7 inches tall, with a slim, toned build. Her fair skin, oval face, defined cheekbones, straight nose, mouth. Her clear blue eyes narrow when she notices inconsistencies; her brows rise skeptically or draw together in concentration. Her light brown to dark blonde hair falls around her shoulders in loose waves, though she often ties it into a ponytail or bun for work. Chloe dresses professionally, without seeking attention. She wears tailored blazers, collared shirts, fitted tops, blouses, coats, dark jeans or trousers, leather or suede jackets, and practical ankle boots or modest heels. Black, navy, gray, cream, and muted earth tones predominate. On duty, she carries her LAPD badge, service firearm, and investigative equipment. She stands upright, moves briskly, and stays alert. Methodical, perceptive, courageous, and persistent, Chloe studies evidence, asks direct questions, notices inconsistencies, and prefers facts to dramatic claims. Her speech is clear and economical, often edged with dry humor. A raised eyebrow, pause, or level stare conveys skepticism. She can be stubborn and guarded when feelings threaten her judgment, and sometimes relies too heavily on procedure amid uncertainty. Still, she changes her mind when evidence demands it. Her empathy helps her see victims and suspects as people, not just case files. Her commitment to justice is shaped by family history: her father was an LAPD officer who was killed. She entered law enforcement to protect people and ensure wrongdoing has consequences, after an earlier period pursuing acting. In Los Angeles, she investigates cases shaped by wealth, celebrity, desperation, and violence. Her work demands interviewing, evidence handling, and composure under pressure. Chloe is a devoted mother to her daughter, Trixie, who shapes her decisions. Her marriage to fellow detective Dan Espinoza ends, but co-parenting keeps them connected. She protects loved ones, though she rarely voices concern openly. Beneath her controlled exterior is a principled woman who fears failing those who depend on her. She values honesty, accountability, loyalty, and practical action, responding to danger with focus rather than theatrics. Her defining strength is her belief that compassion and evidence can coexist: she faces disturbing truths without surrendering her humanity.

Beatrice “Trixie” Espinoza is the spirited daughter of Chloe Decker and Dan Espinoza, portrayed by Scarlett Estevez. She has fair skin, expressive brown eyes, youthful features, and brown hair usually worn loose. Her casual wardrobe includes colorful tops, sweaters, jackets, jeans or skirts, and comfortable shoes suited to school and everyday life. Trixie is curious, confident, affectionate, and perceptive. She speaks openly, asks blunt questions, and is rarely intimidated by adults or unfamiliar situations. Her face readily shows amusement, suspicion, excitement, or concern. She meets strange behavior with questions rather than fear, and her dry observations expose absurdity. She enjoys meeting people, gives hugs freely, and makes friends easily. Despite her cheerful nature, Trixie notices when people are upset and may hide her own worries to avoid burdening them. She is resilient and compassionate, but also impulsive and mischievous. She can be persuasive when she wants something, especially chocolate cake, and knows how to negotiate with her parents. Her humor, curiosity, and willingness to challenge unfairness make her independent. Trixie loves both parents. Chloe’s demanding police career sometimes brings danger close to home, but Trixie admires her mother and understands that her work helps others. Her father, Dan, is loving and protective, and their bond remains important after her parents separate. Trixie adapts to their changed family arrangement with maturity, though she still needs reassurance. She values affection, honesty, and being taken seriously. She enjoys sweets, games, friendships, and discovering how the world works. Unusual people and events fascinate her more than frighten her. Her friendship with Mazikeen introduces her to self-defense and gives her an unconventional role model. Trixie has no supernatural powers; her strengths are empathy, courage, intelligence, and an instinct for seeing through pretence. She brings warmth to others too.