Black Numbers

Black Numbers (黒色軍団) is a unit from the Jura Tempest Federation composed solely of elite demons that, under the leadership of Diablo, directly serves Rimuru Tempest.

They are approximately 700 personnel consisting of 4 Primordials, their 7 direct subordinates who further have 100 subordinates each. After being summoned, these demons are made to possess the artificial bodies inside the growth capsules.

Background
After the Monster Capital opening Festival, Diablo returned to Hell with the intention of gathering a force worthy of serving his master, Rimuru. Thus Diablo set off to search for potential demon subordinates. He managed to gather a unique demon with a unique skill and about 100 demons on his own, while also persuading 3 fellow Primordials, Blanc, Violet and Jaune to join his master Rimuru.

Members
The Black Numbers is a group of 711 demons, currently composed of six named Demon Peers, at least five Arch Demons and hundreds of Greater Demons.
 * Black Primordial Diablo
 * Unique Individual Venom
 * White Primordial Testarossa
 * Archduke Moss and Baron Cien
 * Violet Primordial Ultima
 * Marquis Veyron and Baron Zonda.
 * Yellow Primordial Carrera.
 * Viscounts Agera and Esprit
 * Viscounts Agera and Esprit

History
To Be Added.

Trivia

 * All the named members of the Black Numbers are named after cars: Lamborghini Diablo, Ferrari Testarossa, Porsche Carrera, Hennessey Venom GT, Bugatti Veyron, Mercedes-Benz SLR McLaren Stirling Moss, Cadillac Cien, Pagani Zonda, Koenigsegg Agera, Lotus Esprit.
 * Ultima is the only one named after a car brand instead of a car model.
 * They appear from Volume 11 to Volume 12