Biscuit Krueger

Biscuit is a 57yearold woman who looks like a 12yearold girl and is a master and experienced teacher of Nen. She continues the Nen training Wing gave to Gon and Killua during the Greed Island arc. As a Treasure Hunter Biscuit loves collecting rare jewels and gets very excited about them she has a habit of naming them and getting money. Biscuit has a devious personality. She initially uses her cutesy appearance and demeanor to her advantage whether its for information gathering getting what she wants or even in combat by acting innocent and helpless so most people will usually put their guards down around her. However as a teacher of Nen she has a stern and serious attitude towards her students. Source: Hunterpedia