D. Rooney was an United Earth Starfleet officer in the 22nd century.
In January of 2155, Rooney worked as a test conductor at the Fleet Operations Center on Earth. Rooney's office was located in room 1113. (ENT: "Demons" set artwork)
Rooney's name was seen on directory listings seen on the set of "Demons".
D. Rooney was named after Enterprise production associate Donna Rooney.