Heliopolis Brig

High-security cell block in Heliopolis.

Heliopolis Brig emerges in Dark Age as a high-security cell block within the city of Heliopolis, serving as a critical detention facility during the escalating conflicts on Mercury. While its role is primarily introduced in this fifth installment, the brig represents the broader infrastructure of Republic control and the harsh realities of wartime imprisonment. Its significance lies in housing key political and military prisoners, making it a focal point for both security operations and potential rescue or escape attempts.