Carlson was a male Human who served in both the Maquis and as a provisional member of Starfleet during the late-24th century.

During the 2370s, Carlson was a member of the Maquis and served aboard the Maquis raider Val Jean under the command of Chakotay. In 2371, after being transported to the Delta Quadrant by the Caretaker and his array, Carlson's raider was destroyed, forcing him, along with the rest of the maquis crew, to join the Starfleet crew of the USS Voyager. (VOY: "Caretaker")

After joining the crew of Voyager, Carlson was awarded a provisional rank and assigned as an operations division Starfleet officer.

A hologram of Carlson helped Chakotay take the ship in Tuvok's holodeck program intitled Insurrection Alpha. In the scenario, he and O'Donnell were on the bridge when Chakotay commandeered Voyager. They later escorted the prisoners who refused to join under Chakotay's leadership to the brig. (VOY: "Worst Case Scenario")

Carlson was played by regular stunt actor Tom Morga, who received no on-screen credit for his appearance.
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