闇の悪魔
The Darkness Devil is a devil that embodies the primal fear of the dark. It serves as the secondary antagonist of the International Assassins arc.

[Spoiler] The only contract with it seen so far is with [[Santa Claus (Chainsaw Man)|]], in exchange for bringing the heart of [[Denji (Chainsaw Man)|]] to Hell, [[Santa Claus (Chainsaw Man)|]] gained a small portion of the devils flesh which allowed the assassin to manipulate their body in darkness and amplifies their total power. [/spoiler]
darkness devil