Hélène Lamberti, known as Saeko Nogami in Japanese media, is a lieutenant within the Tokyo Metropolitan Police Department. She is the eldest daughter of the police chief and has four sisters, including Reika Nogami, a former police officer turned private detective, and Yuka Nogami, a well-known novelist. Her appearance includes shoulder-length dark-blue hair swept to the right, blue eyes, and a buxom figure. Her standard attire consists of a white jacket with rolled sleeves over a knee-length dark-purple sweetheart dress featuring thigh-high slits on each side, paired with blue heels. This outfit allows for concealed weapons access and leverages her sex appeal for operational advantages. She drives a red Porsche 930 Turbo and utilizes modified police revolvers, hidden throwing knives; later adaptations show her using a Walther PPK and a Glock-19. Professionally nicknamed the "Vixen" for her cunning and determination, she frequently outsources high-risk tasks to Ryo Saeba. This practice accumulates a ledger of unpaid favors Ryo demands be settled romantically, demands she consistently evades. Her methods involve using her attractiveness to distract targets, such as writing job offers on her thigh or deploying strategic seduction. In the *Angel Heart* continuity, she becomes police chief and reveals a past romantic relationship with Hideyuki Makimura, having awaited his marriage proposal. Following his death, she remains single but harbors an unspoken desire for a conventional family life with Ryo Saeba, indicating a shift in romantic focus. In the 2019 film *City Hunter: Shinjuku Private Eyes*, she provides critical intelligence to Ryo concerning antagonists Christopher King and Vince Ingrad, an arms trafficker. Her role involves coordinating with police security units and sharing confidential data to aid Ryo's missions. Her background includes working alongside Hideyuki Makimura in the police force before his death. She maintains a complex relationship with Ryo, balancing professional reliance and unresolved romantic tension. With her sisters, she exhibits familial rivalry, particularly with Reika over Ryo's affections. Her father repeatedly arranges marriage meetings for her, which she avoids by demanding suitors exceed her strength and cunning. International adaptations, like the French live-action film *Nicky Larson et le Parfum de Cupidon*, retain her core traits under the name Hélène Lamberti, depicting her as a strategic police contact who manipulates dynamics with Ryo.