High School DxD Wiki
High School DxD Wiki
It’s our first meeting. Your Eminence Vasco Strada, I am the current head of the House of Gremory.

–Zeoticus introducing himself to Vasco Strada, Volume 24, Life.1 Bursting into Summer!

Zeoticus Gremory is the current Head of the Gremory Clan. He is the father of Rias Gremory and Sirzechs Lucifer, the grandfather of Millicas Gremory, and the husband of Venelana Gremory.


Zeoticus has the appearance of a middle-aged, handsome looking man with long crimson hair that is tied in a loose ponytail with a black hairband. He has bright blue eyes just like his two children, Sirzechs and Rias Gremory. He also has a short and red beard or stubble.


Coming from the Gremory Clan that has extraordinary affection, Zeoticus has demonstrated an extremely kind disposition. He is similar to his son Sirzechs in that he is laid back and has a playful side, as he likes dressing up as his clan's mascot "Gomorin" and playing the part. Also like Sirzechs, his antics get him into trouble with his wife Venelana and he becomes frightened when she catches him in the act of fooling around.


Little is known of Zeoticus's past, except that he married Venelana Bael and eventually fathered two children: Sirzechs and Rias. Dueing the Devil Civil War, he and his clan joined the Anti-Satan Faction in order to stop the Satan clans from restarting the Great War. When Sirzechs became the Satan, "Lucifer" and lost his right to become the Head of the Gremory Clan, Zeoticus made an arrangement with the Phenex Clan for his daughter to marry Riser Phenex at some point before the series. At some point, he honed his cooking skills in the human world.

Powers & Abilities

Demonic Power: As the head of the Gremory, Zeoticus has strong demonic power. He displayed the ability to overwhelm numerous bandits with his demonic powers.

Flight: Being a Devil, Zeoticus can fly with his wings.

Master Chef: Zeoticus is a master chef, having honed his cooking skills in the human world, he can cook delicious food comparable to high-end restaurants.


  • Zeoticus' name is taken from the characters in the Gundam franchise, Zeon Daikun + Marticus Rex.[1]
  • Zeoticus is likely hundreds of years old, as his Bishop, Heinrich Cornelius Agrippa, lived and died during the early 1500's.
  • Zeoticus's only known peerage member is his Bishop, Heinrich Cornelius Agrippa.
  • Rias mentions that Zeoticus has a pact with a Magician.[2]
  • Venelana reveals that Zeoticus has a harem which she manages.[3]
  • He acts as the mascot character "Gomorin" to represent the House of Gremory.[4]
  • In both the light novel and manga, he and Lord Phenex discuss about the Welsh Dragon and the impending arrival of the Vanishing Dragon, while in the anime this conversation is held between Sirzechs Lucifer and Grayfia Lucifuge.


  1. Ishibumi's tweet
  2. Light Novel Volume 14, Life.1 I’m Also Doing a Devil Today
  3. Light Novel Volume 10, Life.1 The Preparations for the School Festival!
  4. Light Novel DX.1, Life 3 Let's Go with Training! ~Mascot Chapter~