Hades

Hades is the God of the Realm of the Dead. The main antagonist of Volume 11 and Volume 12, aiding Khaos Brigade's Old Satan Faction and Hero Faction behind the scenes in a scheme to destroy the Devils and Fallen Angels. He commands a legion of Grim Reapers.

Appearance
Hades' body consists of only bones and gives off a creepy aura, and dressed in an attire worn by high priests.

Personality
Hades despises the Devils and Fallen Angels, believing that they are unnecessary beings, calling them bats (referring to the Devil's wings) and crows (referring to the Fallen Angel's wings).

History
One of the Trinity Gods of Olympus, Hades is one of the Gods that have been active since the ancient times, ruling the Realm of the Dead.

The Heroic Oppai Dragon
He appears in Volume 10 as one of the spectators for Rias and Sairaorg's Rating Game, greeting Azazel and the Occult Research Club before the start of the match.

In Volume 11, he unseals Samael which he lends to the Hero Faction. After the battle, he sends his Grim Reapers to attack the Occult Research Club, before calling them to retreat after Shalba Beelzebub captures Leonardo and forcefully activates his Balance Breaker, creating 13 gigantic monsters to attack the Underworld.

In Volume 12, he was confronted by Sirzechs Lucifer and Azazel in order for him not to interfere the crisis that is occured in the Underworld, in exchange where he demanded that Sirzechs reveal his "true form". It is later stated by Indra that Hades is very unpleased about Sirzechs and Azazel's visit and send Cao Cao to the Realm of the Dead to calm him, along with Georg and Leonardo.

Powers & Abilities
Immense Strength: Given his status as one of the Top 10 "Strongest Beings in the World", Hades is stronger than Michael, Azazel, and the current Four Great Satans combined (albeit without both Sirzechs and Ajuka in their true forms).

Trivia

 * Hades is among the Top 10 "Strongest Beings in the World".