Farrell was a 24th century Human man, a Starfleet officer. By the year 2370, he held the rank of captain, and was attached to the Starfleet Inspector General Office. In that year, Captain Farrell visited Deep Space 9 to evaluate the crew. While Farrell was initially displeased by his findings, he later learned that the crew were tired because they were looking after an abandoned baby. (DS9 comic: "Baby on Board")