The following is a list of unnamed characters appearing in the holonovels based on the Dixon Hill series.
Cleaning lady
The cleaning lady was a character in the Dixon Hill holoprogram of Captain Picard. When Picard entered the program, she was mopping the floors in front of Dixon Hill's office. (TNG: "The Big Goodbye")
Desk Sergeant
The desk sergeant was a character in Picard's holoprogram of the private detective Dixon Hill. He was interested in Dr. Crusher who also was taking part in the program. He offered her a stick of chewing gum, which she accepted, and he said that she was a hot broad. Crusher asked if that was good. He asked her if she liked Tommy Dorsey, and that he had two tickets for his show. Crusher did not take him up on his offer, and, not knowing what to do with chewing gum, she gave it a few chews, then swallowed it. (TNG: "The Big Goodbye")
Man in hallway
This man was reading in a paper while standing outside of Dixon Hill's office. He was barely visible and standing in the shadows. (TNG: "Manhunt")
News vendor
The news vendor was a friend of Dixon Hill. When Jean-Luc Picard was playing the role of Dixon Hill in his holoprogram, he wanted to buy a paper from him, and he referred to the vendor as "Mac". He didn't have any money, and the vendor told him to not worry about it and catch him next time.
As Picard was reading the paper he mispronounced the name of Joe DiMaggio and Data corrected him. Data then mentioned DiMaggio's hitting streak which he said would reach 56 games before being stopped by Cleveland. The vendor said Data was nuts because Cleveland did not have any pitching. When Data further stated that the record would be broken in 2026 by Buck Bokai of the London Kings, the vendor wanted to know where Data was from. Picard answered South America and the vendor sarcastically said Data had a nice tan. (TNG: "The Big Goodbye")
Nicky's girls
These two girls accompanied Nicky the Nose during his visit in a nightclub when Jean-Luc Picard and Lily Sloane entered the holodeck, followed by two Borg drones. During the following shootout they screamed and took cover behind a calm Nicky. (Star Trek: First Contact)
Nicky's henchman
This man was Nicky the Nose's henchman. When Captain Jean-Luc Picard accessed the program in 2373 to escape Borg pursuit, he took the Thompson .45ACP submachine gun of this man to eliminate the two Borg threatening him and Lily Sloane. The henchman was amused when Picard strip-searched him but tried to intervene when Picard grabbed his gun. He was knocked unconscious by Lily who used a champagne bucket. (Star Trek: First Contact)
Nightclub bartender
This man was a bartender in the nightclub Dixon Hill visited often. When Captain Jean-Luc Picard accessed the program in 2373 to escape Borg pursuit, the bartender informed him Nicky the Nose hadn't been in the nightclub "for months", making Picard realize he had accessed the wrong chapter. (Star Trek: First Contact)
Nightclub maitre D'
This man was the maître d' of the nightclub Dixon Hill often visited. He welcomed the two Borg drones invading the program, was scanned by them and then thrown through the room. (Star Trek: First Contact)
Nightclub patrons
These patrons visited the nightclub, part of the Dixon Hill series story "The Big Good-Bye" when Jean-Luc Picard and Lily Sloane wnt onto the holodeck followed by two Borg drones. Several couples were dancing to the song "Moonlight Becomes You", performed by the singer and the band. Some were drinking at the bar and several tables. When Picard grabbed for a submachine gun and fired at the Borg the people were screaming and running away. Some of them were thrown through the room by the Borg drones. (Star Trek: First Contact)
Nightclub singer
This woman was a singer in the nightclub Dixon Hill visited often. When Picard visited the program with Lily Sloane she performed "Moonlight Becomes You". (Star Trek: First Contact)
Passerby
This man was seen walking past a newspaper stand, arm in arm with a lady, carrying an umbrella, when Jean-Luc Picard and several other officers of the USS Enterprise-D paid a visit to the Dixon Hill holoprogram in early 2364. (TNG: "The Big Goodbye")
Police officers
These three police officers were on duty at precinct 12 when Captain Jean-Luc Picard, portraying Dixon Hill, was interrogated by Detective Dan Bell. (TNG: "The Big Goodbye")
Police secretary
This woman worked as a secretary at the police department precinct 12 in the story "The Big Goodbye". She answered a phone call when Dixon Hill was interrogated by Dan Bell. (TNG: "The Big Goodbye")
Rex's Bar patrons
Five bar patrons were in Rex's Bar when Jean-Luc Picard used the Dixon Hill holoprogram to hide from Lwaxana Troi. They included two men at a table, a sailor and woman seated at the bar and a man at the bar. (TNG: "Manhunt")
San Francisco citizens
These San Francisco citizens were characters in Picard's Dixon Hill holonovel which he used to relax before meeting the Jarada of Torona IV. (TNG: "The Big Goodbye")
"Scarface"
"Scarface" was a man with a noticeable scar on the right side of his face who entered Dixon Hill's office with the intention of recruiting him, quite forcefully, for a job. (TNG: "Manhunt")
Street passersby
These street passersby were seen outside Dixon Hill's office. (TNG: "Manhunt")
Thug
The thug was a henchman of Cyrus Redblock in Picard's holoprograms of the Dixon Hill novels. After Whalen had been shot, he wanted to throw him out in the garbage. He also slugged McNary, a police officer friend of Hill who had stopped by Hill's office. After Redblock dematerialized when he left the holodeck, Data took the thug's gun, bent it, and punched the thug out. (TNG: "The Big Goodbye")
"Toots"
"Toots" was a character in the Dixon Hill program called "The Big Good-Bye". Dr. Beverly Crusher, who was playing a character in the program, met her at precinct 12. She watched her put on her make-up and fix her hair. Crusher copied her, and learned how to use a make-up compact. (TNG: "The Big Goodbye")