Sousuke Sagara is the main protagonist of the light novel and anime series Full Metal Panic!. He is an approximately 17 year old sergeant within the paramilitary counter-terrorist force, Mithril. He is a member of the SRT (Special Response Team) of the Western Pacific Battle Group "Tuatha de Danaan". His call sign is Urzu-7 and his ID number is B-3128, and operates as team point-man as an Arm Slave specialist.