One of the members of the battle maids originally created by someone except for Tabula Smaragdina.

CZ2I28 Delta is an automaton battle maid and member of the "Pleiades Six Stars," the battle maid squad of the Great Tomb of Nazarick.

CZ2128 appears emotionless and has a silent nature. Her Karma is relatively high, which makes her, along with Yuri Alpha, one of the two "safe" Pleiades to humans. Though she usually ignores conversations from humans, sometimes there is a possibility to communicate with her. She hates cannibalism and likes cute things, such as Eclair.