Gun Devil

The Gun Devil (銃の悪魔, Jū no akuma) is a very powerful devil who embodies the fear of guns.

Due to its overarching role in the story, it can be considered to be the primary antagonist of the series.

Appearance
The Gun Devil's true appearance is currently unknown

Chunks of its discarded flesh resemble bullets.

Personality
The Gun Devil's personality is currently unknown.

History
It first appeared in the United States thirteen years before the present day. It gained its great power since a lot of guns were being bought as a countermeasure for devils, this lead to an increase in gun crimes and civil revolts. The Gun Devil first appeared the same day as a terrorist attack was made in America using guns. Within about five minutes the Gun Devil almost killed 1.2 million people and disappeared. This incident lead to an increase in fear of devils, thus leading to all devils gaining power. Because of this, the Gun Devil is a big target for most devil hunters.

Bat Devil arc
Makima asks Denji for a favor; she wants him to defeat the Gun Devil whose location is currently unknown. She offers to grant any one wish he has if he can kill it.

Abilities
Devil Empowerment: When devils of any type consume pieces of the Gun Devil's flesh, their power is greatly enhanced.

Regeneration: The Gun Devil's separated body parts fuse together when touching and will attempt to rejoin the Gun Devil's main body to regenerate.

Immense Speed: The Gun Devil is incredibly fast, able to kill 1.2 million people in various countries across the world in five minutes. Its speed is so great that pieces of its flesh burned off of its body as it moved.

Blood Consumption: As a devil, the Gun Devil should be able to restore its health by consuming blood.