Grayfia Lucifuge

Grayfia Lucifuge is a prominent character in High School DxD. She is a powerful Pure-Blooded Devil from the noble Lucifuge Clan and serves as the wife of Sirzechs Lucifer (one of the Four Great Satans) as well as his Queen in his peerage (using the Evil Pieces system). She is also the mother of their son, Millicas Gremory, and the sister-in-law of Rias Gremory.

She is widely known by titles such as the "Strongest Queen" and the "Silver-Haired Queen of Annihilation" due to her immense power, which is said to rival that of the Four Great Satans themselves.

Grayfia often appears in her role as a maid serving the House of Gremory, presenting herself with perfect etiquette. She has a strict, serious, calm, dignified, and refined personality. In the series, she is depicted as a beautiful woman who appears to be in her early twenties, with long silver hair (often styled in braids) and striking eyes.