The criminal syndicate known as the South Sector Sinners, often called Southies, functioned as an illegal enterprise on the planet of Burnin Konn, utilizing violent criminals and petty offenders.
During her sibling's younger years, Riley was associated with the Sinners for around 60 days, and she had an unpleasant encounter with the Kyuzo named Khalu. Following the Battle of Endor, after the Galactic Empire downed the Cruel Mistress over Burnin Konn, the Sinners plundered all of its freight. Riley's sibling later tracked down the stolen goods while on assignment from "Happy" Dapp, resulting in the deaths of Khalu and other members of the Sinners.
The South Sector Sinners were initially introduced in the mobile game Star Wars: Uprising, released in 2015.