Alluka Zoldyck is a young (Trans) girl, shes often sweet kind, and has innocent traits along with fondness of her older brother Killua. Killua is around fourteen while alluka is twelve. Alluka is often aloof but aware and smart
She also has another person (alt ego) that persons name is Nanika Nanika is Allukas sister and they both share a body. Nanika has a pale face and pitch black eyes and a filled in smile the rest of the Zoldyck family thinks of nanika as a thing rather then a little sister.