The Black Black Club, from its early days, started off as a group who monopolized the power of eight psychics in order to maintain the existence of a small portal which led to Demon World. This was done as a means to capture, enslave, torture and sell lower class demons at enormous prices. The Club established a black market industry by using demon bodyguards for corporate crooks like the Toguro Brothers to accumulate massive amounts of money as an underground slave trade. This slave movement was founded by Sakyo, a new and upcoming member of the club who used his skill at capturing demons. The club would enjoy watching blood being spilled and observe demons dying horrible deaths in a display of depraved extravagance known as the Feast of Human Vices. Their sadistic indulgences are what caused then-Spirit Detective Shinobu Sensui to descend into insanity, and kill most of the members present at the Feast, other than seven absent ones, and Sakyo, who had just left. Despite their excessive cruelty, even they were disgusted by Sakyo's plan to open a Makai tunnel to decimate the entire planet, and attempted to stop him, but were killed by Younger Toguro. However, not all members were present when they were killed (like Gondawara and the bald/bearded one).
- Tournament Committee Member (de facto leader in anime)
- Bearded/bespectacled member
- Elderly, bald member with mole (de facto leader in manga)
- Bespectacled member (speaks with a stereotypical Asian accent)
- It is stated in the english dub that this secretive society was founded by Gonzo Tarukane.