Julian Psilakis was a male human Starfleet officer in the late-24th century. In May 2381, Lieutenant Psilakis served as third officer and gamma shift commander of the USS Quirinal, a Vesta-class starship assigned to Project Full Circle, a fleet tasked with exploration of the Delta Quadrant. Psilakis is listed as a lieutenant commander in the appendix of Children of the Storm, but is almost always referred to as Lieutenant within the novel. Captain Farkas calls him Commander only once when she agrees to let him stay on the bridge after the Children of the Storm first appear.