Nagamasa Gadou is a Promoter and the leader of the Civil Security Division during the Third Kanto War. His Initiator is Asaka Mibu. They are both ranked at 275 at the start of the war.
Gadou is an excellent sword fighter and an experienced leader.
He carries with him a sword made out of Varanium. His armor is an advanced exoskeleton developed by Shiba Heavy Weapons, which increases his defence and combat abilities but is supposedly very expensive.
Nagamasa Gadou has a son named Hidehiko Gadou, whom he had forced to become a Promoter. Hidehiko and his Initiator perished during the first battle of the Third Kanto War.