(covers information from several alternate timelines)
Alfonse D. Pacelli was a command division Starfleet support noncom (grade 4). He was promoted to his rank on stardate 46992.5, and was a specialist in data flow management systems. He had an average efficiency/coind rating of 8.8, and served aboard the Federation starship USS Enterprise-D between 2365 and 2370.
Pacelli graduated from the Starfleet Technical Services Academy, Mars, on stardate 40021.4. He was awarded the Graf Award for positronic field research on stardate 40098.2, a Kliever Citation for systems design on stardate 40107.0, and a Tolley Citation for original research on stardate 40116.5. He was assigned to the USS Philadelphia on stardate 40127.8, the USS Syracuse on stardate 40276.2, and the Enterprise-D on stardate 40299.5.
He served at the Utopia Planitia Shipyards, Sol system, where he was a team leader on the starboard lower optical data net installation and tuning. He was also a team leader on the port-side mid-deck optical data net installation and tuning. (TNG: "Eye of the Beholder")
Pacelli was assigned to the Enterprise-D in 2365. He was walking along a corridor when a non-corporeal lifeform, later known as Ian Troi, entered the ship in the form of a small, glowing sphere. (TNG: "The Child")
A holographic duplicate of Pacelli was part of the illusion created by the alien Barash on Alpha Onias III in 2367. In this illusion he left the turbolift on the bridge and was passed by Captain Riker and Doctor Beverly Crusher. (TNG: "Future Imperfect")
By 2370, he had an average efficiency rating of 8.8 and was a specialist rating 6 in data flow management systems. On stardate 40116.5 he received the Tolley Citation for original thinking, and he received the Kliever Citation for systems design on stardate 40107.0. He also received the Kerry Award for positronic field research on stardate 40096.2. On stardate 40127.8 he was assigned to the USS Philadelphia, and he was then assigned to the USS Syracuse on stardate 40276.2.
- "The Child"
- "The Outrageous Okona"
- "The Icarus Factor"
- "The Ensigns of Command"
- "The Price"
- "The High Ground"
- "Yesterday's Enterprise"
- "Future Imperfect"
- "The Drumhead"
- "The Host"
- "The Game"
- "A Matter of Time"
- "The Next Phase"
- "Eye of the Beholder"
- "Journey's End"
An okudagram readout of Pacelli's personnel file was displayed on a viewscreen that Deanna Troi was studying. Some of the facts could be called into question since she was involved in a very detailed hallucination when the data was shown. In said personnel file, it was originally reported that he was born on stardate 40001.9. This was changed in the remastered episode to show stardate 20001.9.