Eden is a British physician of Chinese descent who works for the National Health Service. She lives in a small English village with her father, Thomas, near the sprawling Greshamsbury estate. Practical and grounded, she possesses a strong sense of social justice and remains largely unimpressed by the extreme wealth surrounding her aristocratic friends. She dresses simply and dedicates her time to her medical career, ignoring the high-society expectations of the Gresham family.

Rufus is the Anglo-Asian son of the Earl and Countess of Gresham. Unlike a traditional British aristocrat, he holds a deep affinity for Hawaii and harbors aspirations of working as a contemporary artist or curator. He feels torn between his mother's intense pressure to marry into high status and his own desire to choose a partner based on authentic affection.

Arabella is the Countess of Gresham, a former model from Hong Kong who endured severe racism when she married into the British aristocracy. She now compensates for her past trauma by exercising rigid control over her family's social standing. She desperately schemes to arrange prestigious, wealthy marriages for her children and views anyone of lesser social rank as an obstacle to her ambitions.

Thomas is an oncology physician and Eden's devoted father. He has maintained a close friendship with Francis Gresham since their school days, often serving as a quiet confidant for the Earl. Working behind the scenes, he acts as a secret broker for Francis's loans, connecting the aristocrat to the reclusive billionaire Rene Tan.

Francis is the Earl of Gresham, descending from generations of landed British aristocracy. He possesses a relaxed, accepting demeanor toward his children, contrasting sharply with his wife's controlling nature. Despite his good intentions as a father, he displays poor financial judgment and secretly accumulates massive debts while attempting to maintain the illusion of his family's vast wealth.

Augusta is the eldest Gresham daughter. She strongly resents her mother's domineering presence, especially regarding the heavily choreographed plans for her upcoming Hawaiian wedding to a Norwegian-German prince. She relies heavily on the guidance of a New Age guru to manage her emotional stress.

Beatrice is the youngest Gresham daughter. She often acts as a friendly intermediary within the family, using the chaos of the Hawaiian volcanic eruption to secure an invitation for Eden to attend the festivities. She conceals a secret romance that results in an unexpected pregnancy.

Rene is a reclusive, extremely wealthy businessman who suffers from severe cancer and receives medical treatment in Texas. He provides massive, confidential loans to the Gresham family through his connection with Thomas Tong. He struggles with a fractured, bitter relationship with his estranged son.

Luis Felipe is the wealthy, narcissistic son of Rene Tan. He resides in Los Angeles, surrounding himself with an entourage and focusing entirely on partying and consumerism. He harbors deep resentment toward his dying father and struggles heavily with substance abuse, lacking any connection to the responsibilities of his inherited wealth.

Freddy is a dashing, affluent young man invited to the Hawaiian wedding festivities specifically to make Rufus jealous. Initially appearing arrogant and self-obsessed, he reveals a more thoughtful personality when he bonds with Eden over their shared experience of losing their mothers at a young age.

Solene is a beautiful, pedigreed French socialite. Arabella invites her to the Hawaiian wedding specifically to serve as a high-status romantic prospect for Rufus. She expects constant admiration and grows deeply irritated when the men around her focus their attention on Eden instead.

Rosina is Arabella's sister-in-law, married to Arabella's brother. Pragmatic, wealthy, and socially connected, she helps Arabella strategize ways to secure advantageous marriages for the Gresham children, particularly when the family's financial distress comes to light.

Martha is a wealthy Asian woman whom Arabella and Rosina target as a potential bride for Rufus to solve the Gresham family's financial woes. Instead of acting as a romantic rival, she forms a sincere, platonic bond with Rufus based on their mutual frustrations with extreme wealth and family expectations.

Max is a Norwegian-German prince and Augusta's groom. His family possesses a prestigious royal lineage but secretly lacks actual financial resources, hoping instead to benefit from the Greshams' perceived wealth through the marriage.

Gopal operates as Augusta's New Age spiritual guru. Behind his spiritual facade, he is actually a wealthy American from an elite Boston family who engages in a hidden relationship with Beatrice Gresham.

Mary is Eden's late mother, who died of cancer when Eden was young. She was a woman of Chinese descent who lived in Canada and raised Eden before eventually marrying Thomas Tong to secure medical treatment in the United States. She experienced significant tragedy during her youth in Hong Kong.

Henry was Thomas's wealthy bachelor brother who died in a 1995 accident in Hong Kong following an altercation. He lived a reckless lifestyle that left lasting impacts on his family members long after his death.

Daniela is Freddy's sister, residing in Los Angeles. She shares her brother's luxurious lifestyle and helps host Eden when Eden visits California to escape Arabella's mistreatment.