Fiona Frost

Fiona Frost, known by her alias "Nightfall".
She is a former student of Loid Forger, who trained her to maintain an impassive facade, but over time she developed romantic feelings for him.

Key facts

Affiliations: WISE, Berlin General Hospital (as an undercover psychiatric nurse).

Occupation: Spy (undercover as a nurse).

Aliases: Nightfall (Tobari), Nafalia Foney (tennis competitor), Red 3 (Shellbury code).

First appearances: Manga chapter 29; anime episode 20.

Physical description

Fiona is a tall, attractive woman with a slim build and pale skin. Her hair is short and lavender, with long bangs that cover most of her right face, combed behind her left ear. Her eyes are purple, framed by light eyelashes, and she often displays a serious expression. She is described as beautiful by Yor Forger and has several admirers.

Personality

Fiona is a cold, stoic, and focused spy who knows Loid well. Beneath that facade, she has a warm and caring heart. She is deeply in love with Loid and, while maintaining her professionalism, suffers from the rivalry with Yor Forger.

Skills

Espionage Training: He received advanced training from Loid Forger, excelling in covert operations.

Discretion: Able to maintain an impassive facade, hiding his emotions.

Adaptability: Effectively infiltrates civilian environments as a psychiatric nurse to support Loid missions.

Relationship with other characters

Loid Forger: Former instructor and object of his affection.

Yor Forger: A love rival, he perceives Fiona as a threat to his family.

Franky Franklin: Loid's partner, he is often shown to be jealous of the attention Fiona gives to Loid.