Other Characters/Grim Reapers

Orcus
Orcus (オルカス, Orukasu) is a Ultimate-class Grim Reaper that works under Hades and thus the Five Factions, the husband of Aria Blackstone and the father of Sasha Blackstone. Orcus seems to be a doting father towards his daughter Sasha and was very grateful to the members of the Sitri Clan for looking after her.

Plouton II
Plouton II (プルートンII, Purūton II) is a member of the Hades faction and loyal follower of Orcus. Pluto II is also the child of the first generation Plouton who served Morpheus.

Mantus
Mantus (マントゥス, Mantusu) is a member of the Hades faction and a follower of Thanatos.

Soranus
Soranus (ソラヌス, Soranusu) is a Ultimate-class Grim Reaper of the Hades Faction. He has described as having an wolf's skull for an head that protrudes out of his jet-black cloak.

Zenon
Zenon (ゼノン, Zenon) is a High-class Grim Reaper who serves under Morpheus. He has been placed in charge of being the team leader of Team Young Satan of the Sleeping Dragon King for the Alliance Cup to watch over Balberith, Verrine, Rosier, Sonneillon, Gressil, and Azus.

Horkos
Horkos (ホルコス, Horukosu) is a High-class Grim Reaper who serves under Morpheus.

Styx
Styx (スティクス, Sutikusu) is a Ultimate-Class Grim Reaper who serves herself and neither Hades or Morpheus, much to the latter's dismay and anger. She was first mentioned in Volume 4 by the Nordic goddess Freyja as a problem that Hades has to deal with. She made her official appearance in volume 25, as a member of Thanatos' team for the Alliance Cup.