Darker than Black: Ryuusei no Gemini Characters

Codename "Hei", the main protagonist, is an elite Contractor, with the Messier Code BK-201. Hei has a double persona in the series. In the general public he is referred to as Li Shengshun, a good-natured Chinese exchange student living in the Umitsuki apartments.

A member of MI6.

A policewomen with a strong sense of justice and sharp intuition.

The main protagonist of Darker: Than Black Ryusei no Gemini. She is a 13 year old contractor with not much known about her abilities other than she can manifest a PTRD-41 from her meteor fragment.

Once Suo friend but she became a contractor through mysterious means and have become enemies.

Yin is an emotionless doll, who is very untalkative.