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Juan Gutierrez (also known as Frontino) was a mercenary and a member of the Free Company. Prior to his miliary career, he, along with Adam Pangratt, Julia Abatemarco and Lorenzo Molla had previously been imprisoned in Kovir after being accused of being members of the "Sly cats" (Polish: "Psotnych kotów"). After the group was released by Esterad Thyssen, they left for Redania where they formed the mercenary group known as the Free Company. The whole Free Company took part in the battles at Mayena and Brenna, but Juan was killed though his efforts were heroic.