Azuma Genkaku

Azuma Genkaku (東 弦角) is the leader of the Undertakers, and a self-proclaimed "Ultra Buddhist Priest" who dresses in the garb of a Japanese monk along with prayer beads which has a skull on it. He wields an electric V-shaped guitar that can split into two machine guns. Two years before the main storyline, he was the one who killed Nagi's wife and is eventually found an interest in Nagi after he went on a rampage by killing twenty-two of Undertaker soldiers. He is eventually finished off by Ganta's Ganbaru Gun with the help of Nagi.

Personality
Genkaku appears to be a laid-back and irreverent individual at first glance, but this scruffy exterior hides a brutal, impulsive, excessively-violent personality and an unstable mind. Genkaku is blunt, sarcastic, and quite sadistic, revealing a psychotic grin when he is fighting or killing somebody. He believes that Death is the only salvation "anybody", even smiling before his death at the hands of Ganta and Nagi.