Ensign Culhane was a 24th century Starfleet officer assigned as relief conn officer, engineer, and tactical officer aboard the USS Voyager under Captain Kathryn Janeway. Culhane became stranded in the Delta Quadrant along with the rest of the crew in 2371.
Culhane was on duty on an aft station of the bridge when the Voyager encountered the Vidiians for the first time. Later he worked in main engineering when the Voyager set course into an asteroid. (VOY: "Phage")
Culhane served as relief operations officer on the bridge during the absence of Harry Kim and manned an aft station when Kim returned from Banea. After the case of the Baneans was solved, he had a meal in the mess hall. (VOY: "Ex Post Facto")
He had a meal in the mess hall a few days later, shortly before the Voyager made first contact with the Sikarians and was on duty in engineering when a non-corporeal being accessed the control over the ship. (VOY: "Prime Factors", "Cathexis")
He was working on the bridge when the crew found a Ford truck drifting in space. After the crew discovered its location and woke up the 37's he was also present when Tom Paris gave Amelia Earhart a lesson about the navigation console. (VOY: "The 37's")
In 2372, Culhane was on duty on the bridge when Tom Paris broke the transwarp threshold in the shuttlecraft Cochrane. Later, he was on the bridge again when Paris, in his mutated form, kidnapped Captain Janeway and escaped to transwarp in the Cochrane. (VOY: "Threshold")
Culhane was on duty in main engineering when the Voyager received data from one of its probes which was found by the Borg. He later armed himself with a Starfleet phaser rifle when the ship prepared to enter Borg space. (VOY: "Scorpion")
Manning the operations station on the bridge, Culhane alerted Captain Janeway over com of the intercepted distress call, discovered to be sent by a Serosian HD25 Isomorphic Projection. (VOY: "Revulsion")
The following year, Culhane's piloting skills saved the ship while he was serving at Tom Paris' station on the bridge while Paris was serving thirty days in the brig. Janeway considered promoting Culhane to chief conn officer. (VOY: "Thirty Days")
Culhane's biomimetic copy was on duty in engineering and the last crewmember along with Seven of Nine able to work. He suffered from degradation due to radiation from a new warp core technology. (VOY: "Course: Oblivion")
On stardate 53764, when Tal Celes went to the main engineering, she rapidly crossed with Culhane in a corridor. Later, he covered Mortimer Harren's duties in junction room 16, when Harren was forced to go on his first away mission. (VOY: "Good Shepherd")
Culhane was part of the away team, including Seven of Nine, Chakotay, Tuvok, and Tom Paris, which beamed to the Hirogen training facility where they found the Hirogen scientist Donik. (VOY: "Flesh and Blood")
He was working on a console in engineering when the ship stranded in the Void and another ship beamed cargo, food, and technology from aboard the Voyager, including Culhane's console. (VOY: "The Void")
Culhane celebrated First Contact Day in the mess hall of the Voyager with fellow crewmembers. Later he worked on the bridge and smiled when the Talaxians Dexa and Brax visited the bridge. (VOY: "Homestead")
Culhane was played by regular background actor and stand-in Louis Ortiz who received no credit for his appearances. His voice in the fourth season episode "Revulsion" was provided by an unknown actor.
- "Phage" (Season 1)
- "The Cloud"
- "Eye of the Needle"
- "Ex Post Facto"
- "Prime Factors"
- "Learning Curve"
- "The 37's" (Season 2)
- "Persistence of Vision"
- "Death Wish"
- "The Thaw"
- "Basics, Part I"
- "Basics, Part II" (Season 3)
- "The Chute"
- "Future's End, Part II"
- "Favorite Son"
- "Before and After"
- "Worst Case Scenario"
- "The Gift" (Season 4)
- "Day of Honor"
- "Thirty Days" (Season 5)
- "One Small Step" (voice only) (Season 6)
- "Ashes to Ashes"
- "Good Shepherd"
- "Flesh and Blood" (Season 7)
- "The Void"
- "Friendship One"