Lieutenant Brent was a Starfleet officer who served in both the command and sciences divisions aboard the USS Enterprise under Captain James T. Kirk during the late 2260s, usually as a medical technician or as navigator.
In 2266 on stardate 1512.2, Brent, in a science division blue shirt, was on the bridge helping at the science station when the Enterprise engaged the First Federation. On stardate 1535.8, Brent, again in science blue shirt, was working at the bridge's engineering station when Charlie Evans, with powers from the non-corporeal Thasians wreaked havoc with the Enterprise and her crew. (TOS: "The Corbomite Maneuver", "Charlie X")
On stardate 1704.2, Brent, in science blue shirt, relieved Lieutenant Uhura at navigation after Spock had her relieve Lieutenant Kevin Riley on stardate 1704.2 because Spock had thought that Riley was inebriated and Spock had relieved him of duties, with Riley leaving the bridge. (What Spock and no one else on the bridge knew, though, at that particular time was that Riley along with Lieutenant Hikaru Sulu had contracted the Psi 2000 polywater intoxication.) On stardate 1704.4, while at navigation, Brent helped to plot a course so the Enterprise would not be dragged into the gravity well created by the rapidly deteriorating orbit of the planet Psi 2000 as the planet was destructing naturally for it's life span. Brent did not contract the Psi 2000 polywater intoxication. (TOS: "The Naked Time")
In 2267 on stardate 1709.1, Brent, in a command division yellow shirt, attended the wedding of Robert Tomlinson and Angela Martine before it was canceled by Romulan sightings. (TOS: "Balance of Terror")
On stardate 2124.5, Brent, in command yellow shirt, was on the bridge when Sulu and Kirk were abducted by Trelane. On stardate 2125.7, when McCoy, Lieutenant DeSalle and Lieutenant Karl Jaeger beamed down to Gothos to find the missing Kirk and Sulu, Brent replaced DeSalle at navigation. On stardate 2126. 1, he would leave the bridge on the turbolift with Lieutenant Leslie, Lieutenant Hadley and an engineering crewman when Kirk, Sulu, McCoy, DeSalle and Jaeger returned from Gothos and the bridge and would not be on the bridge when Trelane appeared suddenly on the bridge. (TOS: "The Squire of Gothos")
On stardate 2821.5, Brent, in science blue shirt, was at the bridge's main science station relieving Spock, as Spock was in command of the crew on board the shuttlecraft Galileo as it was investigating the Murasaki 312 quasar. From stardates 2821.7 to 2823.1, Brent was relieved at science, when Uhura led the search, and then acting as temporary Enterprise main science officer helped Kirk with the rescue of it's crew from planet Taurus II. But Brent continued to stay on the bridge acting as Uhura's main assistant by coordinating all of the efforts of the entire bridge crew in both sciences, engineering and communications. (TOS: "The Galileo Seven")
On stardate 3113.2, Brent, in science blue shirt, was on the bridge at the auxiliary science station to the left of the main science station (Spock's station) and to the left of navigation when the Enterprise got dragged into a black star with a high gravitational attraction. To avoid a disaster, Scotty used a sling-shot effect to try and pull away. Unfortunately it sent both Brent to the floor (as well as everyone else on the bridge, including Kirk and Spock) and threw the ship back two centuries to July 1969, just a few days before the first Apollo moon landing. After a memorable and nearly disastrous few days in July 1969, the Enterprise again used the sling-shot effect using Earth's sun to return to 2267. When the ship got to 2247, the drag again became too much to keep gravitation to remain on the side of most of the bridge crew, but unfortunately this time Brent was the only one to fall on the floor of the bridge. (Spock helped him stand up when they returned to 2267 on stardate 3114.1.) (TOS: "Tomorrow is Yesterday")
Brent was on the bridge when Khan Noonien Singh took over the Enterprise on stardate 3142.8. Brent passed out after the life support to the bridge was cut, and was seated in a prisoner's row with Leslie, Hadley and others, forced to watch Khan's murderous spectacle on the viewscreen. (TOS: "Space Seed")
He was also present in a corridor during a few of Kirk's (and one time Spock's) speeches to the crew. (TOS: "The Corbomite Maneuver", "Balance of Terror", "The Menagerie, Part I", "Assignment: Earth")
In 2268 on stardate 4657.5, Brent, in command yellow shirt, was working in environmental engineering, when the Kelvans hijacked the Enterprise to return to their home world in the Andromeda Galaxy. He was immobilized and put into temporary 'frozen' stasis by Kelvan Drea. On stardate 4658.9, the Kelvans temporarily neutralized Brent into a dehydrated cuboctahedral crystalline solid block, the size of a human fist and which represented the "distilled" essence of his being, because the Kelvans considered Brent one of many non-essential personnel aboard the ship. Brent would be restored to normal when Kirk, Spock, McCoy and Scotty, the only four members of the crew not neutralized, regained control of the Enterprise. (TOS: "By Any Other Name")
On stardate 5630.8, Brent appeared in the corridor during Captain Kirk's announcement the clearance of all ship's passageways while Ambassador Kollos was transferred from the transporter room to his quarters. (TOS: "Is There in Truth No Beauty?")
- "The Corbomite Maneuver"
- "Charlie X"
- "The Naked Time"
- "Balance of Terror"
- "The Squire of Gothos"
- "The Galileo Seven"
- "Court Martial"
- "The Menagerie, Part I" (stock footage)
- "The Menagerie, Part II"
- "Tomorrow is Yesterday"
- "The Return of the Archons"
- "A Taste of Armageddon"
- "Space Seed"
- "This Side of Paradise"
- "Errand of Mercy"
- "The Alternative Factor"
- "Operation -- Annihilate!"
- "The Changeling"
- "The Deadly Years"
- "Bread and Circuses"
- "The Gamesters of Triskelion"
- "The Immunity Syndrome"
- "A Piece of the Action"
- "By Any Other Name"
- "Return to Tomorrow"
- "The Ultimate Computer"
- "Spock's Brain"
- "Is There in Truth No Beauty?"
- "The Tholian Web"
- "Let That Be Your Last Battlefield"
- "Whom Gods Destroy"
- "The Mark of Gideon"
- "The Lights of Zetar"
- "The Way to Eden"