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Orem Vacker is Alvar, Fitz and Biana's grandfather. He is also a Flasher. He puts on light shows when eclipses occur. Not much is known about him. In the first book, Elwin calls him one of the best Flashers in the Elvin world. He is a minor character and is only mentioned in the first and second book. He has potential to be involved, due to his fame, a likely person to have been recruited.