David (Senior)

He is father to the current David of the Red Shield. He was present in the frontlines during the Vietnam war in 1972. During that time Saya was forcefully awakened which drove her to madness causing a massacre out of friends and foes. David (senior) met his death on the battlefield. Before dying, he handed down the responsibility of looking after Saya to George. It's later mentioned that the current David abandoned his original name and took up his father's to finish the mission passed on eliminating all chiropterans and killing Diva.