Race: Human

Age: 24

Birthday: August 28, 1996

Height: 183 cm (6'0")

Weight: 65 kg (143 lb)

Blood type: O

Rank: Lieutenant Colonel

Section: Moon Demon Squad

Affiliation: Japanese Imperial Demon Army

Demon Weapon Series: Black Demon

Demon: Mahiru-no-Yo

Guren Ichinose is the main protagonist of the Owari no Seraph: Ichinose Guren, Jyuurokusai no Catastrophe series and an important character in the Owari no Seraph series. He is a Lieutenant Colonel of the Japanese Imperial Demon Army and the commanding officer of the Vampire Extermination Unit, Moon Demon Company.