Alliance of Hell

Alliance of Hell is a terrorist group formed by Hades to combat against the members D×D, leaders of the mythological worlds, and to fight against the invaders of ExE world.

Summary
The Alliance of Hell was officially formed in Volume 25, after Hades holds a conference at Cocytus to invite the gods that agreed to his plans such as Erebus, Nyx, Tartarus, and Angra Mainyu. They began to discuss about the Cross Times Kiss that was led by Mitsuya Kanzaki and was received a warning from Issei Hyoudou for attacking his parents, which shaken some of the members.

In True Volume 1, Nyx began her move by wanting to use Ingvild Leviathan and her Longinus Nereid Kyrie to control powerful dragons like the Two Heavenly Dragons, Ophis, Great Red, and Crom Cruach. However her plan failed as she was defeated by the combined efforts of Issei and Ddraig, they eventually handed her over to Apollon, the current chief leader of Greek mythology, to determine her punishment.

Privileges and Purpose
The group functions as an terrorist cell with the purpose of eliminating the Longinus users as they deem them a great threat and to eliminate the leaders of every mythological worlds. They created a army of artificial devils in order to defend their worlds against the invaders from ExE world that is approaching Earth.