The gang was formed after Bulgarin immigrated to Liberty City. Bulgarin employed Niko Bellic to smuggle people into Italy from Eastern Europe until the ship sank which Niko had to swim for his life. Bulgarin blamed Niko for the loss and sought to hunt him down.
Bulgarin was able to track Niko to Liberty City where he and his friend Dimitri Rascalov ambushed Niko and Bulgarin had his men kill Niko. But Niko (with Little Jacob's help) was able to survive the ambush and escape. Dimitri and Bulgarin insisted on tracking him down in Liberty City.
Bulgarin and Timur went to Maisonette 9 (owned by Gay Tony) and met and employed Luis Lopez to take down Marki Ashvilli and his men. After that Bulgarin attempted to kill Luis to take his diamonds for himself but Luis survived. Later Dimitri informed Bulgarin of a hostage exchange between Luis and Niko and Bulgarin went to ambush the deal but both Luis and Niko again survived. After that Bulgarin went to the Ancelottis and they decided to force Luis to kill Tony. But Luis instead killed an enforcer of the Ancelotti's Uncle Vince and (for the THIRD time) survived Bulgarin's ambush.
Realizing Luis and Tony survived Bulgarin attemped to escape by plane but Luis and Tony decided to kill Bulgarin. Luis went to the carnival and killed Timur. He then jumped on the plane and killed Bulgarin. It is likley that after his death the gang dissolved