Mitsuba

Mitsuba is a female servant of the Zoldyck Family.

13th Hunter Chairman Election arc
She unintentionally became the first person other than Killua witnessing Alluka when he was in wish-granting mode after fulfilling three consecutive requests made by him, which were carrying him, going up a staircase, and raising him up in the air.

Kikyo Zoldyck then ordered Mitsuba to decline any request of Alluka to test his ability. Obeying the order, she declined Alluka's requests four times in a row and as a result was crushed into minced meat together with her lover Hasama, a butler of the Zoldyck family, by Alluka's power.