Captain Jay Cyneus was a member of the command division of the military of the Eriaduan Empire connected to the Space Attack Force. Cyneus commanded the Eriaduan Fleet during the Battle of Muunilinst during the Ascension Wars and was responsible for holding the line against the Sith-Imperial Fleet whilst he awaited the return of Grand Commander Antonio de Borgia from Yaga Minor. He and Commander Molif Archway, who was in charge of the Muunilinst siege, were given great praise for their accomplishment during the siege.