Santin was a 24th century Starfleet officer. In the mid-24th century, Santin held the rank of commodore and served on the planning board at Starfleet Operations. Commodore Santin was critical of the intentions of Admiral Carstairs in supporting a heavily armed plan specification for the then-new Galaxy-class starships. While Admiral Carstairs would often describe the vessels' strength as a deterrent, Santin feared that fielding a ship with such destructive capabilities might serve as a provocation to the Federation's enemies. (FASA RPG module: Star Trek: The Next Generation Officer's Manual)