Tyler McNally, the novel’s deuteragonist, is a dynamic and round character who fits the “grumpy” or “tortured poet” archetype. His identity is fundamentally shaped by two defining traumas: The abandonment by his father and his perceived role in the accident that ended his best friend Mikey’s baseball career, which he believes led to Mikey’s fatal overdose. This immense guilt and self-loathing manifest as a cynical and brooding exterior. He initially scoffs at the romance genre Katie writes, dismissing it as “derivative,” a reflection of his own literary aspirations and his belief that authentic art must stem from suffering. This intellectual snobbery is a shield, protecting him from the vulnerability required to believe in the possibility of a happy ending for himself.

Tyler’s character arc is driven by his quest for forgiveness and his struggle to reconcile with his past. His sobriety is a cornerstone of his identity, yet he remains emotionally isolated, unable to form lasting intimate connections because he feels he is fundamentally “broken.” The forced collaboration with Katie compels him to re-examine the literary frameworks he once dismissed. His journey exemplifies Understanding Love and Identity Through Literature, as he begins to see himself and his relationship with Katie through the very tropes he once mocked, such as when he asks if he is “a Gus” from the novel Beach Read. The act of writing with Katie becomes a therapeutic process, allowing him to confront his past not through a direct and painful rehashing, but through the allegorical development of his character, Henry. This shared creative space is the only context in which he feels safe enough to let his guard down and begin to heal.

Tyler’s greatest conflict is internal: He must learn to forgive himself before he can fully accept Katie’s love. He is trapped by a “false narrative” he tells himself about his own unworthiness, believing he is destined to repeat his father’s pattern of abandonment. His initial rejection of Katie after they have sex is a manifestation of this deep-seated fear. His ultimate transformation occurs when he chooses to fight for Katie, running across New York City to grovel and declare his love. This grand romantic gesture signifies his rejection of his self-imposed isolation and his decision to believe in the possibility of a second chance. By the end of the novel, Tyler has integrated his past into his present, accepting that he cannot change what happened but that he can choose to be a man who stays.

Meredith Bradford operates as a mentor figure and a supernatural catalyst within the narrative, embodying the “meddlesome ghost” trope. Initially presented as a reclusive and eccentric billionaire author, her true nature is revealed late in the story: She is a ghost, lingering in her estate after drowning in the ocean following the disappearance of the man she loved, Tyler’s father. This revelation recontextualizes her actions throughout the novel, transforming her from a whimsical employer into a powerful, grief-stricken entity orchestrating events from beyond the grave. Her motivation is to author a real-life happy ending for Katie and Tyler, the children of the woman her lover married and the lover himself. This act is a vicarious attempt to rewrite her own tragic love story and find a measure of peace.

As a ghost, Meredith possesses a unique narrative power—the ability to literally read Katie’s and Tyler’s thoughts and transcribe them into the novel Tropesick. The plot wall in her Carriage House, a key symbol, is the physical manifestation of her authorial control, mapping out the characters’ lives according to the romance conventions she knows so well. However, her influence is not absolute; she clarifies that she has “only set the scene” and that the emotions and choices made by Katie and Tyler are genuinely their own (373). This distinction casts her as a spectral stage manager who provides the setting and plot points for a love story that must still be authentically performed by its leads.

Despite her immense power, Meredith is a deeply tragic figure. She is trapped by her own past and her inability to move on from her heartbreak. Her existence is lonely, marked by endless bottles of wine she can hold but not truly enjoy and an inability to physically connect with the world around her. She confesses to Tyler, “Without love, it is worthless. This house—the art, the money, unspeakable fame. It is all completely and utterly worthless” (294), revealing the deep emptiness that fuels her fixation on Katie and Tyler’s romance. Her final act is to complete their story and disappear, her purpose fulfilled. She serves as both a cautionary tale about the destructive power of unresolved grief and proof of the lasting belief in love’s ability to create meaning, even in the afterlife.

Carolyn Caruso, Katie’s mother, is a static and flat character who is a primary antagonist. Her identity is entirely consumed by her grief over the death of her son, Mikey. This unprocessed trauma renders her incapable of acknowledging, let alone loving, her living child. She is the starkest representation of the theme The Cyclical Nature of Grief, trapped in a loop of mourning that reactivates with every anniversary and memory of Mikey’s potential. Her interactions with Katie are almost exclusively transactional, centered on the foundation she runs in Mikey’s name. For Carolyn, Katie exists only as an assistant for the gala, not as a daughter with her own emotional needs. Years earlier, Carolyn also confronted Tyler after Mikey’s funeral and demanded that he leave Katie’s life, believing their relationship would only deepen the family’s grief. By forcing Tyler to promise he would break Katie’s heart and never contact her again, Carolyn becomes responsible for the years of separation that shape the novel's central conflict. When finally confronted by Katie’s pain, Carolyn weaponizes her status as a grieving mother, stating, “You could never understand—you’re not a mother” (303), a line that reinforces the emotional chasm between them. Her ultimate ultimatum to Katie, forcing a choice between her family and Tyler, is the culmination of her inability to see beyond her own pain and blame, cementing her role as a barrier to Katie’s happiness.

Danny is a flat character who is a foil to Tyler and symbolizes the superficial life Katie has built for herself as a defense mechanism. As a successful and conventionally attractive lawyer, he “checks all my boxes” (154), representing a safe and uncomplicated choice for a casual partner. However, he shows no interest in Katie’s emotional depth, her past, or her creative work. His ignorance of her family trauma stands in stark contrast to Tyler’s intimate knowledge of her history. His aggressive and insensitive behavior, particularly his goading of Tyler about his sobriety during their dinner, reveals his shallowness and solidifies his role as an obstacle to Katie’s happiness. He is, as Meredith would call him, a mere “plot device,” whose purpose is to highlight what Katie is missing and to push her toward a more authentic connection with Tyler.