This article is about a subject that has not been officially named in any official Katekyo Hitman Reborn!
translated material; the current title is merely a placeholder.
The Electric Firefly is a Lightning-attribute Animal-type Box Weapon used by the White Spell of the Millefiore Famiglia. It has only appeared in the anime adaptation.
The Electric Firefly is used to destroy the sensors of the Vongola Underground Base in Japan. Iris Hepburn states that the Electric Firefly and the Vampire Bat are the only Box Weapons that can destroy the sensors, a feat that the Black Spell cannot achieve.