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Mercedes Kaestner-Varnado, also known as Sasha Banks, is a professional wrestler and actress who portrays the character of Koska Reeves in the Star Wars series "The Mandalorian." She is known for her athleticism and charisma in the wrestling world, and her portrayal of Koska Reeves showcases her acting range and ability to bring depth to a complex and formidable character within the Star Wars universe.