The Giegue Famiglia, nicknamed the Grave Diggers, is a Russian Mafia family allied to the Vongola Famiglia. It consists of only three members, two males and one female. They have a fearsome reputation as a group of assassins, as Hayato Gokudera was nervous about his own appearance when he heard the Giegue Famiglia was coming to the Inheritance Ceremony.
The Giegue Famiglia were invited to attend Vongola Decimo's Inheritance Ceremony in Japan. They discovered the location of a group attempting to interfere with the Ceremony, and decided to deal with them as a gift to Vongola Decimo. However, they were defeated by an unknown female fighter, who, according to them, did not possess any of the conventional Dying Will Flames. Though the actual outcome of their battle with the mysterious fighter has yet to be confirmed, Reborn stated that their bodies were left in strange positions, implying that there were no survivors of the conflict. During the Inheritance Ceremony, the attacker was revealed to be Adelheid Suzuki of the Simon Famiglia, who used a Glacier Flame, a Dying Will Flame belonging to the Dying Will Flames of the Earth rather than the Dying Will Flames of the Sky.