"Ballerina" centers around Rooney, a ballerina-turned-assassin played by Ana de Armas. The character was briefly introduced in John Wick: Chapter 3 – Parabellum, in a scene that showcased a ballet school doubling as a training ground for future assassins, overseen by the enigmatic Director (played by Anjelica Huston). The spin-off will delve deeper into the life of Rooney, who seeks revenge against those who killed her family.

Key Highlights
Ana de Armas as the Lead: Ana de Armas takes on the role of Rooney, bringing her charisma and physicality to the action-packed world of assassins. Known for her roles in films like No Time to Die and Knives Out, de Armas has proven her versatility as an actress and action star, making her an exciting addition to the John Wick universe. Her character, Rooney, is driven by a singular mission of vengeance, with her assassin skills honed through ballet training, combining grace and lethality.

Ties to the John Wick Universe: The film expands on the complex and secretive assassin society introduced in the John Wick franchise, with its distinctive rules, codes of conduct, and colorful characters. Familiar faces from the series will make appearances, including Keanu Reeves as John Wick himself and Anjelica Huston reprising her role as the Director, who plays a key part in Rooney’s backstory.

Director and Creative Team: Len Wiseman, known for directing films like Underworld and Live Free or Die Hard, is at the helm of "Ballerina." With his experience in crafting visually intense and action-driven films, Wiseman is expected to bring a distinct energy to this spin-off, while maintaining the sleek and brutal aesthetic that fans of the John Wick series appreciate.

Action and Choreography: Like the main John Wick series, "Ballerina" is expected to feature intricate, beautifully choreographed fight sequences. The film will likely blend ballet movements with combat, creating a unique and mesmerizing style of action. With de Armas having trained extensively for her action roles, viewers can expect her to perform many of her own stunts, much like Reeves does in the John Wick films.

A Dark, Expansive World: "Ballerina" aims to explore new layers of the assassin underworld, including a closer look at the Director’s organization and the role of the ballerinas within it. The film promises to retain the dark, atmospheric tone of the John Wick series while expanding on the lore of this deadly universe.

Supporting Cast and Characters
Keanu Reeves will reportedly reprise his role as John Wick in a cameo appearance, connecting this spin-off to the broader franchise. His character is expected to play a supporting role, offering guidance or interaction with Rooney in her journey for vengeance.

Anjelica Huston as The Director, the head of the Ruska Roma syndicate, returns to mentor Rooney. The Director’s role in training female assassins through ballet will be further explored, giving more depth to her character and her influence in the world of assassins.

Other notable characters are expected to make appearances, further connecting the movie to the overarching narrative of the John Wick series.

Conclusion
"Ballerina" is set to be a thrilling addition to the John Wick universe, expanding its world with a new female lead in the form of Ana de Armas' Rooney. The film will delve into themes of vengeance, survival, and the intricacies of the secret assassin world that fans of the series have come to love. With the promise of spectacular action, visually stunning choreography, and rich storytelling, "Ballerina" is poised to become a standout entry in the growing John Wick franchise.