Synopsis
Tsubone is a veteran butler of the Zoldyck household and the grandmother of Amane. Like all the family's servants she wears a black formal suit; she is a fairly tall, bulky old woman with her hair tied into two pigtails and a monocle over her right eye.
She is unreservedly loyal to Silva and carries out his orders without hesitation. Of all the servants, only she takes the liberty of calling Killua "Killua-chan" and Alluka "Alluka-chama".
When Silva assigned Tsubone and Amane to accompany Killua alongside Gotoh and Canary, she warned the boy at once that the moment he broke the terms she would take him home — knocking him out if that was what it took.
Silva holds her in very high regard, and her mere presence was enough to make Gotoh sweat. Tsubone believes she could knock Killua out in an instant, and he in turn prefers to avoid confronting her. Voiced by Ikuko Tani.
