Bea is an attractive and successful senior business development director at a large advertising firm in New York. Having grown up constantly moving as her mother seduced wealthy men, Bea now craves ultimate security and safety. She believes she can secure this by marrying into the old-money Case family. She is highly calculating, maintaining a flawless facade while keeping her turbulent past tightly under wraps.

Gale is the sole heir to the old-money Wallace-Leicester family and Collin's childhood best friend. Unlike the women in her social circle, Gale puts little effort into her appearance, dressing in a deliberately frumpy manner. She is sharply observant and deeply protective of Collin. She acts highly suspicious of Bea's motives, using her vast resources to investigate newcomers to their elite sphere.

Collin is the young heir to the Case Company and a member of one of America's wealthiest families. Coddled by his privileged upbringing, he frequently experiences bouts of depression and seeks comfort in safe, familiar routines. He views Bea as his perfect match, completely unaware of the calculated precision she uses to craft her ideal persona for him.

Bea's unnamed mother is a skilled con artist who raised Bea on the road, frequently changing their names to match the men she targeted. She views relationships purely as transactional opportunities for wealth and survival. Her manipulative parenting style left Bea with deep psychological scars.

Syl is Collin's new assistant at the Case Company. Friendly and optimistic, she grew up in the foster care system and currently lives a modest life in Brooklyn. Her pleasant demeanor challenges Bea's deeply ingrained cynicism about female friendship.

Haven is the matriarch of the Case family, representing the epitome of old-money snobbery and tradition. She is highly protective of her family's legacy and wealth. She views any outsider, especially those without a traceable pedigree like Bea, as a fundamental threat to be neutralized through financial payouts or intimidation.

Hayes is Collin's father and the patriarch controlling the Case Company. While he projects an image of untouchable old-money authority, he occasionally betrays an inappropriate interest in attractive women. He is disappointed by his son's work ethic but fiercely protective of the family's public image.

Dave is a member of the elite Bradford family who has been largely ostracized by Collin's friend group due to his reputation for sleeping with his friends' wives. Wealthy and highly observant, he views the loyalties of his social class as entirely transactional and hypocritical.

Chloe is Collin's older sister. She holds a largely ceremonial executive position at the family company and closely aligns herself with the social expectations of her class. She enjoys the drama between the women in her brother's life.

Calliope is Collin's younger sister. Rebellious in style but fully insulated by her family's wealth, she openly mocks the rigid social conventions of her peers. She finds amusement in Bea's attempts to fit into their world.

Wren is a fitness instructor and socialite who craves proximity to the ultra-wealthy. She is overly enthusiastic and frequently documents her life on social media. She remains completely oblivious to the quiet mockery she receives from established old-money families like the Cases.

Francis is an extremely wealthy, diminutive man who hosts illicit, abusive parties for the elite. Using his immense financial resources to shield himself from legal consequences, he controls the women in his home through the threat of eviction, demanding compliance in his dark activities.

Len is Bea's boss at the advertising firm. He is easily manipulated by high-paying clients and quickly backs down from disciplining Bea when Collin intervenes, demonstrating his subservience to corporate wealth.