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.
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.
- Black Primordial Diablo
- Unique Individual Venom
- White Primordial Testarossa
- Violet Primordial Ultima
- Marquis Veyron and Baron Zonda.
- Yellow Primordial Carrera.
- Viscounts Agera and Esprit
To Be Added.
- All the important 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're the strongest unit in Tempest.