Crewman Thompson was a member of USS Voyager crew during its mission through the Delta Quadrant.
He was working on the bridge while Voyager was still in the drydock. He was present when Captain Janeway entered the bridge for the first time. Later, he was working in engineering when Vice Admiral Patterson gave Captain Janeway a tour of the ship. (VOY: "Relativity")
He worked as relief tactical officer on the bridge during a Vidiian attack in 2371. (VOY: "Fury")
A biomimetic copy of him attended the wedding ceremony of B'Elanna Torres and Tom Paris in the mess hall aboard the Silver Blood Voyager in 2375. He served drinks to the other crewmembers. During the ceremony, he stood behind Seven of Nine and smiled when Seven caught the bridal bouquet. (VOY: "Course: Oblivion")
Chakotay saw a vision of him during a vision quest; in the vision he was ordered by Tuvok to take aim at Kid Chaos's midsection. (VOY: "The Fight")
Thompson passed Tom Paris and Seven of Nine in a corridor when Paris tried to get Seven into his ping pong tournament in the mess hall. (VOY: "Relativity")
Later, Thompson guarded the quarters where the USS Equinox crew was confined. When Captain Rudolph Ransom freed his crew, Thompson was shot down by him. (VOY: "Equinox")
He was among the crewmembers in the mess hall who celebrated the first contact with Starfleet Command. (VOY: "Pathfinder")
He was walking past Captain Janeway in a corridor when she was on her way to the holographic research lab. (VOY: "Fair Haven")
He was on duty in engineering while a Qomar delegation was aboard the ship. (VOY: "Virtuoso")
He was in the mess hall when Neelix told Torres and Chakotay how he sunburned. Later, Thompson was working on the bridge during the rescue mission for Seven of Nine and Tuvok. (VOY: "Tsunkatse")
Thompson worked as relief tactical officer on the bridge when Orek requested his dilithium. (VOY: "Live Fast and Prosper")
He was on duty in engineering when Tom Paris entered to tell B'Elanna Torres about the captain's decision to join the Antarian Trans-stellar Rally. (VOY: "Drive")
He was one of the security officers who guarded the Benkaran and Nygean prisoners in their detention cells in the cargo bay aboard Voyager. During their attempt to escape, he was shot unconscious. (VOY: "Repentance")
Thompson stood guard on the bridge next to the tactical station and left to accompany Tuvok to the transporter room to stop the Klingons. (VOY: "Prophecy")
He was among the crewmembers who stood in the corridor between the turbolift and the shuttlebay to bid Neelix farewell when he left Voyager in 2378. (VOY: "Homestead")
He was working on the bridge when Commander Chakotay and Captain Janeway had a meeting in the captain's ready room following the return of Janeway from an away mission. He was also present on the bridge when Captain Janeway informed the bridge crew that she was not feeling well and would be in her quarters. Later, during the absence of Tuvok, Thompson manned the tactical station on the bridge under the command of Tom Paris. (VOY: "Renaissance Man")