Martinos Polydorou was a Solarian citizen and an officer of the Solarian League Navy.
In 1922 PD, he held the rank of Admiral and he served as the commanding officer of the Systems Development Command. He was one of the masterminds behind the "Fleet 2000" initiative, and was convinced of the absolute superiority of Solarian League technology. (HH12, HH13)
Late that year, he was forcibly retired by Fleet Admiral Winston Kingsford and replaced with Admiral Tory Kindrick. (HH14)