Teletha "Tessa" Testarossa is the captain of Mithril, and a secondary character in Full Metal Panic. Much like Kaname Chidori, she is secretly a "Whispered", which allows her to control Arm Slaves. She is kind but also rather clumsy, and spends most of her time on Tuatha De Danaan, next to Andrey Kalinin. She appears as one of the leaders of forces against GEZZAN in Worst Hero And Villain War Ever.
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