Gregory Desjardins was a Starfleet commander who was assigned to the Judge Advocate General. Desjardins was from the Alpha Centauri system. In 2385, Commander Desjardins was assigned by the Starfleet JAG to take charge of a JAG office on Deep Space 9. (ST - The Fall novels: Revelation and Dust, A Ceremony of Losses, DS9 novel: Sacraments of Fire) In an alternate timeline, Desjardins represented Data when Starfleet took possession of Lal. (ST - Myriad Universes novel: The Embrace of Cold Architects)