|Appears in||Agent Aika|
|Affilation||Delmo Corps Rudolf Hagen|
Black Delmos (黒デルモ) are an infantry unit in charge of carrying out simple missions, mass-attacking in melee, espionage, disguises, and the administration of the ship.
The Black Delmo uniform consists of a skintight black dress with white around the collar and a red ribbon. Also white thigh-high (Zettai Ryouki) socks, white panties and black high heels. The Leader of this unit, wears light purple socks.
This unit is seen throughout the entire series, They first appear in Beautiful Agent where they unsuccessfully attempt to take out Aika Sumeragi and Gust Turbulence. After their failure they are punished by Neena Hagen and a group of White Delmos. They are seen numerous times being encountered by the main cast during the rest of the series. Notable Black Delmos include: Misaki (みさき) (Voiced by: Kaori Tagami) who has short brunette hair; Yuki (ゆき) (Voiced by: Yumiko Suzuki), who has shoulder-length crimson hair; Sae (さえ) (Voiced by: Kanako Mitsuhashi), who has short dark blue hair.
- Black Delmo Leader (黒デルモリーダー) The unnamed leader of the Black Delmos has short purple hair with curled ends.