Knife Devil

The Knife Devil (ナイフの) is a devil that embodies the fear of knives.

Appearance
The Knife Devil's appearance is currently unknown.

Personality
The Knife Devil's personality is currently unknown

History
At some point Kishibe made a contract with the Knife Devil, for an unknown price.

International Assassins arc
One of the fiends working for Quanxi examines Kishibe with her ability and comments on the contracts with other devils he has, including the Knife Devil.

Abilities
Not much is known about the Knife Devil's abilities.

Contract Creation: As a devil, the Knife Devil can bestow contracts upon humans for a price. The contracts with it seen so far are:
 * A contract with Kishibe for an unknown price.

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

Revival: As a devil, the Knife Devil should revive in Hell after being killed effectively making it immortal.