Juliette, a lady-in-waiting to Queen Anne of Austria, is introduced as a kind and composed figure who kindles a romance with the protagonist. Their relationship begins when she offers a handkerchief to clean mud from him following a carriage accident, sparking their first encounter. Their bond strengthens through mutual support: she aids him in skirmishes with adversaries, while he rescues her from kidnappings orchestrated by foes like Rochefort and Milady. Beyond romance, she engages in covert operations, including delivering vital messages to allies such as the Duke of Buckingham amidst political schemes.

Juliette faces constant danger as a target due to her proximity to the queen, yet asserts agency by confronting Milady physically or escaping captivity unaided. In the 2021 CGI film, she returns the handkerchief, voices concern for his safety, and shares a cheek kiss at a celebration, blending affection with initiative.

A decade later in *The Return of Dogtanian*, Juliette weds the protagonist and mothers Fleur and Philippe, shifting from court life to family while remaining linked to the queen’s renewed political struggles.

Her background as Monsieur Bonacieux’s niece diverges from Dumas’ married Constance Bonacieux, streamlining the narrative for younger audiences by sidestepping literary complexities. Though often cast as a damsel, her defiance and participation in pivotal missions reveal a nuanced balance of vulnerability and resilience.