Illumi Zoldyck

Illumi Zoldyck is a character from the Hunter x Hunter manga and anime series. He is a member of the infamous Zoldyck family and an elite assassin. Known for his emotionless demeanor and calmness under pressure, Illumi is highly skilled in Nen, the series' unique form of supernatural power. His ability allows him to control his opponents with needles imbued with powerful Nen. He has a strong sense of duty to his family, especially to his younger brother Killua, whom he initially was tasked to protect and control. Despite his seemingly cold exterior, Illumi has a complex relationship with his family and is more nuanced than simply being a mere assassin. He occasionally shows a softer side and carries significant weight in the family dynamics, though his ultimate allegiance is to the Zoldyck family legacy.