Restored and Refurbished Aegis Retaliator from the Messer Era, found in a scrap heap on Charon III.
Named after the mythological ferryman of the dead, and the system it hails from. Passed on to Silas Sinclair by the now deceased Essouli that purchased him from a Banu slaver.
Gifted by previous owner 'Avon Hawkins'. Coincidentally enough, Hawkins went missing shortly after meeting with Sinclair.