Established at an unknown point before Dr. Ivo Robotnik took control of the Kindgom of Acorn, Devil's Gulag was brought into service again shortly before his death. Following his betrayal of the Robotropolis Spy Network, Sleuth Dawg was sentenced to be imprisoned there, but was not transported until after Sonic was accused of the seeming murder of Sally Acorn and likewise sentenced there. Their transport would be shot down by SWATbots before they could arrive, but while Sonic escaped, Sleuth was recaptured and taken to the Gulag. He would later be joined there by a number of other criminals: Nack the Weasel, Drago Wolf, the members of the Fearsome Foursome - Sergeant Simian, Predator Hawk, Lightning Lynx, and Flying Frog - and Snively Kintobor. The last inmates known to be brought to the G