Fiona Frost

首次出现2020 · Manga

作品Spy x Family

角色定位WISE agent Nightfall and hospital clerk

Her story

A WISE agent codenamed Nightfall, working undercover as a hospital clerk. Her anime design pairs a white bob covering her right eye with a dark blue coat and an unreadable expression that conceals intense feelings for Twilight.

NightfallWhite bobPoker-faced spy

AI-assisted fan artwork, not an official character card.

ANIME OOTD / CHARACTER ARCHIVE

Fiona Frost

Spy x Family ↗ / 2020

NightfallWhite bobPoker-faced spy

WISE agent Nightfall and hospital clerk

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Featured worksFEATURED WORKS

2019 / MANGA

Spy x Family

2019 / FAN ART

Character world artwork

Fiona Frost ArtworkILLUSTRATION GALLERY

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AI-assisted illustrations · Not official anime stills

Fiona Frost Reaction StickersREACTION STICKERS

角色档案

ABOUT Fiona Frost / 01—06

01First appearance and background

Fiona receives her full introduction in chapter 30 of Tatsuya Endo’s manga, released on Shonen Jump+ on July 27, 2020. The series itself began on March 25, 2019. Her everyday cover is a clerical job at Berlint General Hospital alongside Loid; Nightfall is the codename she uses for WISE operations.

02Personality and appeal

Her blank face does not mean an absence of feeling. Fiona takes Twilight’s lesson about concealing emotion so seriously that even colleagues struggle to read her. That restraint serves her work, while its collision with her overwhelming feelings supplies the comedy. She wants to be an impeccable partner, and her competitive drive can carry her well past everyone else’s expectations.

03Story journey

[Spoilers: anime season 1, episodes 22–23] Fiona and Loid pose as a married couple in an underground tennis tournament to obtain a painting believed to conceal clues to the Zacharis Dossier. Former professionals stand in their way, and the Campbell siblings use modified rackets and accomplices to rig the final. The WISE pair counter those tricks together, giving Fiona’s competence room to matter beyond her romantic ambitions.

04Relationships

[Spoilers: anime season 1, episode 21] Twilight is both her senior and former mentor, as well as the man she loves; their hospital jobs provide a public-facing relationship. Fiona visits the Forgers hoping to replace Yor as the wife in Operation Strix. Anya can read Fiona’s thoughts and is firmly against the proposed change of mother. Fiona’s plans for the visit and the child’s wishes are very different.

05Versions and visual identity

The visual reference is the adult Nightfall of the TV anime: an asymmetrical white bob covering her right eye, a visible gray eye, a slate-blue double-breasted coat over a purple high collar, brown gloves, black trousers and gray ankle boots. Hospital clerk and spy are two identities of the same woman. The anime began in 2022, separately from the manga’s 2019 launch. Images on this page are unofficial AI-generated fan art based on that anime design.

06Fan interpretations

[Original fan reading for this page] Fiona’s poker face can be read as training that works almost too well: the better she conceals herself, the harder it is for others to recognize what she wants understood. She approaches partnership as something diligence can earn, while the Forgers’ everyday attachments resist a performance score. That mismatch gives her comedy a small, poignant edge.