Cipher was a mercenary pilot employed by the Ustio Air Force's 6th Air Division. He was the flight leader of Galm Team and primarily led the squadron during the Belkan War of 1995. Cipher is the player character in Ace Combat Zero: The Belkan War. His signature aircraft is the F-15C Eagle.

Cipher is well known for having an extraordinarily high number of kills in Area B7R, which earned him the nickname "Demon Lord of the Round Table".