Dylan Hunt was a citizen of the Systems Commonwealth, the greatest civilization in the known universe, born to a Heavy Gravity Worlder mother and a human father (later revealed to be a disguised Paradine) in the city of Visharna-Tarn on the Commonwealth capital world Tarn-Vedra. His mother was employed as a local shuttle pilot and his father a garderner at the planet's Imperial Gardens. Growing up Hunt encountered many species, most notably the Vedrans, the founders of the Commonwealth who other races viewed with near deific status. As an adult he joined the planet's local Homeguard Defense Force, and later became an officer in the Systems Commonwealth's elite armed service branch known as the High Guard. There he quickly worked up the ranks, spending two years as an enlisted man before becoming an officer after graduating from the High Guard training academy. Around this time, Dylan met Constanza Stark, the High Guard's Fleet Admiral and Chief Executive and sparked a longstanding friendship with Stark acting as a valued mentor.

After becoming part of the High Guard officer corps, Hunt was chosen by Stark to work in the High Guard's special forces unit known as Argosy Special Operations as a Lieutenant Commander, and on a later tour of duty he commanded the Crimson Eclipse, an Asceticism of Action class Low Observable Special Warfare craft. He also completed post-graduate stints at the Antares Command Lyceum and the Imperial Strategy College on Tarn-Vedra.