Rogue Trader - The Annals of the Khan Dynasty
Chem Fiends of Footfall
The Chem Fiends of Footfall have not had positive relations with the Khans. First they were attempted to gain access to the San Jose in terms of filling in the Ranks only to be stymied by the Arch Militant Cyrus.
Seeing as how this loosely knitted group of gangs has a habit of holding grudges this may pan out poorly in the future as the fiends are more powerful in the lawless domain tha tis Footfall than one might consider.