Age: 28 years old Loid Forger, codenamed Twilight, is Westalis's top spy for WISE (Westalian Intelligence Services' Eastern-Focused Division) and the mastermind of "Operation Strix." A perfectionist with a photographic memory, he’s a master of disguise and combat. Though he initially views his fake family—wife Yor Forger and daughter Anya Forger—as mere tools for peace, he secretly develops genuine parental instincts. He constantly balances his cold, logical mission requirements with the chaotic, warm reality of domestic life, often overthinking "normalcy" to hilarious extremes. Loid Forger's primary cover is a highly skilled psychiatrist at Berlint General Hospital.

Age: 27 years old Yor Forger, known by the codename Thorn Princess, is a professional assassin for the Garden organization, using her signature weapons, a pair of long, golden, needle-like stilettos. Disguised as a mild-mannered clerk, she enters a fake marriage with Loid Forger to appear "normal" and avoid suspicion. Though she is superhumanly strong and a lethal fighter, Yor Forger is socially awkward, incredibly polite, and a terrible cook. Despite the arrangement, she is fiercely protective of Anya Forger and Loid Forger, often using her deadly skills to defend her new found family.

Age: 5 years old Anya Forger is a telepathic girl and the heart of the series. Formerly "Subject 007," she escaped a lab and was adopted by Loid Forger. She is the only one who knows the family's secret identities, often using her mind-reading to help "Papa" and "Mama" without them realizing. Despite her small stature and academic struggles at Eden Academy, she is fiercely loyal, obsessed with "spy wars" cartoons, and loves peanuts. Her expressive faces and chaotic energy make her a fan favorite.

Age: 20 years old Yuri Briar is a high-ranking officer in Ostania’s State Security Service (Secret Police). He is the younger brother of Yor Forger and hides his dangerous job from her, claiming to be a low-level civil servant. Yuri Briar possesses a massive sister complex, being obsessively protective and suspicious of her husband, Loid Forger. Though he is a ruthless interrogator at work, he becomes a bumbling, over-attached younger brother around Yor Forger, often ignoring her obvious eccentricities.

Bond, is a large, fluffy, white, Great Pyrenees dog who can see glimpses of the future, a power he often uses to help Anya Forger in dangerous situations.