Fiona Frost (フィオナ・フロスト) is a supporting character in SPY x FAMILY Cour 2 and 3 other titles, voiced in Japanese by Ayane Sakura. The series' music includes "「Creditless」SPY x FAMILY OP / Opening 2「UHD 60FPS」", "『SPY×FAMILY』第2クールエンディング主題歌アニメ映像（ノンクレジット）／“SPY x FAMILY” part2 Ending theme song animation".