Geumsaegi is the main character of the series. He's a squirrel and act as a covert agent between Weasels and Mouses, making them believe to have defected from Flower Hill. During the show he has great determination and intelligence and incredible skills in martial arts and shootings. He is also shown to have on-the-spot deduction skills, able to play along into any twist devised by the enemy (usually Moolmangcho) and work it against them.

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