Tsubone is an experienced butler of the Zoldyck Family. She is extremely loyal to Silva, and will not hesitate to execute his orders. Among all servants, Tsubone is the only one that dares to call Killua "Killua-chan" and Alluka "Alluka-chama". Tsubone's Nen ability is called Rider's High. It is stated as a form of Conjuration, and it allows her to morph into various vehicles. This vehicle form then uses the aura of her riders as propellant, meaning she cannot use this ability without passenger