Biscuit Krueger first comes into the story on Greed Island. She helps Gon and Killua train while they are at Greed Island, leading them closer to the end of the game. Her goal on Greed Island was to get the gem found only in the game, Blue Planet. She was also the teacher of Wing, the man whom first taught Nen to Gon and Killua. After the events of Greed Island, she returns to help Gon and Killua train for their battles against Knuckle and Shoot during the Chimera Ant arc.
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