Chess is Emily's childhood friend and acts as both her foil and occasional antagonist. Her ambitious nature and contrasting upbringing create tension and a complex dynamic with Emily.

Mari is the protagonist of the novel's 1970s narrative, paralleling the life of Mary Shelley. Her life is intertwined with themes of creative exploration and complex identity.

Lara is a friend and rival to Mari, whose musical talent and ambition drive her to produce a best-selling album at the villa. She represents both the support and antagonism in Mari's life.

Pierce is a musician with aristocratic connections, deeply entwined with Mari's life. His reckless and self-centered actions impact those around him.

Matt is Emily's ex-husband and antagonist, an accountant whose need to control influences Emily's life and career. His character reflects broader themes of control and manipulation.

Noel is a rock star and a foil to Pierce, with genuine musical talent and complex relationships involving Mari. His charismatic presence is tempered by moments of cruelty.

Johnnie is a member of Noel's entourage, known for his physical attractiveness and loyalty. He is involved in the darker elements of the villa's past.