Biscuit Krueger (ビスケット=クルーガー, Bisuketto Kurūgā) is a Double Star Treasure Hunter that enlisted in clearing the video game Greed Island following the auction for the game in Yorknew City. She prefers to be called "Bisky", although she jokingly said that if someone insists on using an honorific, they must call her -chama (-chan + -sama).
Bisky 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 mantelet 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 3 times throughout the story line.
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, Bisky is very powerful. However, she does receive a tremendous power boost when she reverts.
She has brown hair and blue eyes. In the 1999 anime her hair is a lighter brown than in the manga and in the 2011 anime her hair is blonde and her eyes are pink.