So you were born to the Zoldyck family. You are the younger twin of Alluka Zoldyck, making you the youngest Zoldyck child. Your sister, Alluka, has a very powerful ability to make a wish come true, but you first have to fulfill three demands from her. You are also very powerful. When you were eight months old, you could already talk, walk, and use your nen. To top it off, you have multiple abilities(choose some abilities) that are all powerful in their own ways.

When your family was about to lock up Alluka because of her power, you fought back against them and won. So Alluka has her freedom. You keep Alluka's powers under control with your powers. You and Alluka love your big brother Killua Zoldyck, and Killua loves you two, too. You and Alluka have begun starting your training to be assassins with your older brothers, Killua and Illumi, father Silva Zoldyck, and grandfather Zeno Zoldyck.