Cassidy is a 19-year-old girl with rainbow hair, multiple tattoos, and a punk aesthetic. Raised by her free-spirited mother in a mobile home, she has spent her life traveling California on a quest for a mythological town. She possesses a deep love for stories and literature, frequently collecting her mother's writings. She sneaks into Wynton's hospital room to tell him her life story in hopes of waking him from his coma.

Miles is a sensitive prep school student on a track scholarship who struggles with his sexual identity and feelings of isolation. Dubbed Perfect Miles by his siblings, he feels trapped by the expectation to conform and hide his true self. He experiences a form of synesthesia, associating words with colors, and possesses a unique ability to communicate telepathically with a neighbor's dog.

Wynton is an extraordinarily talented but self-destructive violinist. He acts out recklessly, resulting in legal and familial trouble. He relies heavily on his music to express his intense emotions and uses his violin to process the pain of his father's abandonment. Following a severe accident on a country road, he becomes trapped in a coma, where he can dimly perceive the stories being told to him.

Dizzy is a curious, optimistic 12-year-old girl who sees ghosts in her family's vineyard and experiences synesthesia that connects scents to colors. She longs for connection and eagerly reads her mother's romance novels to understand adult emotions. Despite the fractures in her family, she maintains a cheerful disposition and actively searches for ways to heal the people she loves.

Bernadette is a flashy, beautiful chef who runs a popular local restaurant called The Blue Spoonful. She writes unsent letters as a coping mechanism, a habit she developed following the childhood death of her brother. She deeply loves her children but struggles to manage their crises while carrying heavy unresolved grief over her husband's sudden departure twelve years prior.

Theo is a charismatic, almost mythical figure in Paradise Springs whose winemaking skills were legendary. He abruptly abandoned his family twelve years ago, leaving behind a legacy of unanswered questions. He is strongly associated with his trumpet music, which his children believe they still hear echoing across the property.

Clive is Theo's brother, an unkempt man who frequently struggles with drinking. He lingers around the Fall property and occasionally sleeps on the family's couch, maintaining a peripheral but constant presence in the siblings' lives. He is haunted by his family's dark history and the competitive upbringing forced upon him and Theo.

Felix is an exceptionally tall, exuberantly dressed young man who arrives in Paradise Springs looking for work. He embraces life with an open, marveling attitude and a bold fashion sense. He immediately brings a sense of energy and possibility to the gloomy Fall household, attempting to wake Wynton by cooking gumbo.

Marigold is a bohemian single mother who travels the state in a mobile home with her daughter. She prefers an alternative, anti-consumerist lifestyle and constantly searches for a visionary location she calls The Town. She struggles with severe depressive episodes that force her into periods of unresponsiveness.

Dave is an older man who runs a furniture shop in Paradise Springs. In the past, he meets Marigold and Cassidy while camping and temporarily joins their nomadic lifestyle. He is a capable cook who provides Cassidy with a brief glimpse of the stable father figure she desperately wants.

Alonso is the historical founder of the Fall family vineyard in California. According to family lore, he possesses a supernatural beauty that literally illuminates the world around him. He flees his vindictive half-brother to establish a new life and cultivate the vines that will make his family famous.

Sebastian is Alonso's childhood best friend and true love. Possessing a natural innocence, he literally floats and must keep rocks in his pockets to stay tethered to the ground. He eventually travels to California to establish a bakery and reunite with Alonso.

Maria is a spirited woman who flees to California with Alonso, bringing six grapevines from her father. She helps establish the Paradise Springs vineyard, living platonically with Alonso to build a prosperous and independent life.

Hector is Alonso's venomous half-brother. Consumed by jealousy over Alonso's natural radiance and their father's complicated legacy, he swears to destroy Alonso, initiating a multi-generational curse of violence and resentment within the family.

Victor is Hector's vengeful son who travels to California to continue his father's violent feud. He takes over the family vineyard through force and perpetuates a toxic cycle of sibling rivalry by forcing his own sons to fight one another.

Bazzy is the son of Alonso and Maria who inherits the Paradise Springs vineyard. After serving in the army and starting a family, his life is cut short by his vengeful cousin Victor, who seeks to control the family legacy.

Sandro is a neighbor's black Labrador retriever who possesses telepathic abilities. He communicates directly with Miles, sharing his own feelings of emptiness after losing his beloved companion. He provides a non-judgmental presence for Miles during his emotional struggles.

Tristan, formerly known as Lizard, is Dizzy's middle school peer. Their friendship recently fractured after an awkward attempt at a romantic connection, leaving them estranged and hesitant to interact.

Nico is a line cook who works at Bernadette's restaurant, The Blue Spoonful. He shares a secret moment with Miles that forces the teenager to confront his sexual identity.