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High School DxD Wiki
I am Millicas Gremory, nice to meet you.

–Millicas introducing himself to Issei Hyoudou, Volume 5, Life.1

Millicas Gremory is next-in-line to the Gremory Clan after his aunt. He is the son of Sirzechs Lucifer and Grayfia Lucifuge, the nephew of Rias Gremory, and the grandson of Zeoticus and Venelana Gremory. Although his father was Lucifer of the Four Great Satans, his title does not apply to Millicas, as it was only required for Sirzechs and is not an inherent position, thus Millicas' family name is Gremory.


Millicas is a cute young boy with short crimson hair inherited from his father, Sirzechs, and red eyes (blue-green in season 3 of the anime) which he inherited from his mother, Grayfia.


Millicas is shown to be a well-mannered boy. Despite his young age, Millicas is shown to be very responsible even planning about his future peerage. He also prefers being referred as "Millicas" rather than "Millicas-sama" by the people close to him.


Millicas was born a few years before the start of the series.

Powers & Abilities

Demonic Power: As the son of Sirzechs Lucifer and Grayfia Lucifuge, Millicas possesses an incredible amount of talent, which Issei said to be at the same level with Vali. The rest of the Occult Research Club also commented that Milicas's control over his demonic powers was beyond what he should be able to do for his age. 

  • Power of Destruction (滅びの力 Horobi no Chikara): Like Sirzechs and Rias, Millicas also possesses the Power of Destruction, which he inherited from his grandmother. Despite Millicas' young age, he has shown to have better control of his Power of Destruction than Rias, being able to shoot them like a shotgun as well as controlling its direction.

Enhanced Speed: During a mock battle with Issei, Yuuto, and Gasper, it shows that despite his small stature, Millicas can move at incredible speeds.


  • Millicas' name is derived from the names of two characters from the Gundam TV series, Milliardo Peacecraft of Mobile Suit Gundam Wing and Casval Rem Deikun of Mobile Suit Gundam 0079
    • Interestingly enough, the names used for Millicas' name is the real name of the characters used for his father's.
  • In the Volume 13 Afterword, Ishibumi mentioned he would like to write a story about Millicas after DxD ends, as the main character who is all grown up attending a school in the Underworld.[1]
  • According to the author, Millicas has the highest potential in the series in terms of natural talent.[1]
  • Millicas is a huge fan of the Oppai Dragon TV show.


  1. 1.0 1.1 Light Novel Volume 13, Afterword