Sara was a beautiful girl with long silver hair with distinct green eyes. She has red tattoos imprinted on her face and her left arm. She usually wore a long green shaded dress and long green gloves that goes up to her elbow and green ribbons.
Sara Silvers was a member of Imperial Court Mage Corps who held position #3, "The Empress." She was often called "White dog" by Glenn.
Not much is known about her past. She was very close friends with Glenn Radars, being his only reason to stay with the Imperial Mage Corps. She died due to an attack by the hands of angel dust addicts.
(Source: Rokudenashi Majutsu Koushi to Akashic Records Wikia)