Biscuit Krueger (ビスケット゠クルーガー, Bisuketto Kurūgā) is a Double-Star Stone Hunter who was hired by Battera to clear the video game Greed Island following the auction for the game in Yorknew City. She prefers to be called “Bisky” (ビスケ, Bisuke). She also served as the tritagonist for the Greed Island Arc.

Biscuit likes to act and look like a young girl. Her overall aspect is reminiscent of a porcelain doll. She is often shown wearing a sleeveless dress and a bloomer with a mantle and skirt donned over it, along with gloves and plain leather shoes. She always has her hair tied up neatly and has changed its style at least three times.

In her true form, she is a massive and extremely muscular woman several times the size of her preferred form. Although she claims to stay in her younger form to have the enemy underestimate her, the main reason is that she hates her original appearance. Regardless of which form she is in, Biscuit is very powerful. However, she does receive a tremendous power boost in terms of physical strength when she reverts (her Nen stays relatively unchanged between her forms). As a Royal Bodyguard, she wears her hair in a laced bun and dresses in a suit and tie.

She has brown hair and blue eyes. In the 1999 anime, her hair is a lighter brown than in the manga. In the 2011 anime, her hair is blonde and her eyes are pink.