Edge of the Empire
Every predator has a scavenger that picks at what they leave behind. For the Pyke Syndicate, this was the Vindu Tong. As the Pyke Syndicate ensured the flow of spice from Kessel to Coruscant, the Vindu Tong picked up scraps they were too busy for or simply hired out muscle to the Pyke when they were too strained.
There have been periods of time when the Vindu Tong have risen in power, only to be brought back into their place once the Pyke syndicate was finished dealing with their interruptions. The main points in time when this occured was during the Clone Wars, when it was discovered that the Pyke had killed Master Syfo-Dyas, and again after the new leader of the Pyke turned down the Black Sun offer to merge and the Black Sun retaliated by attacking.
The Vindu Tong mainly operate doing smuggling and small engagements of piracy. They have a presense from Coruscant to the outer rim and are joined by those who do not desire the infamy of belonging to a larger crime syndicate or who just do not ‘make the cut’.