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 weapons sub-system station when the Enterprise engaged the First Federation. On stardate 1535.8, Brent, again in science blue shirt, was working at the bridge's environmental systems station when Charlie Evans, with psionic powers from the non-corporeal Thasians wreaked havoc with the Enterprise and her crew. (TOS: "The Corbomite Maneuver", "Charlie X")
On stardate 1704.3, Brent, in science blue, 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. 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 its 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, 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 left 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 was not on the bridge when Trelane appeared there suddenly. (TOS: "The Squire of Gothos")
On stardate 2821.5, Brent, in science blue, 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 temporarily as Enterprise's main science officer, helped Kirk with the rescue of the crew from the 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 sciences, engineering, environmental and communications. (TOS: "The Galileo Seven")
On stardate 3087.6, Brent, in command yellow, was on the bridge working on repairs at the environmental systems station when the Enterprise was preparing to leave the orbit of an iron-silica uncharted planet when the whole universe, including the ship, winked out of existence. The shock-wave from this winking-out of the universe caused Brent to be unsteady and he had to kneel and hold on to the control panel at environmental systems to keep from falling. (TOS: "The Alternative Factor")
Unfortunately Brent may not have learned his lesson regarding holding on when the Enterprise was being rocked or under attack. On stardate 3113.2, Brent, in science blue, was on the bridge at the weapons sub-systems 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 slingshot 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 slingshot effect using Earth's sun to return to 2267. When the ship got to 2247, the drag again became too much to keep gravitation 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 later helped him stand up when they returned to 2267 on stardate 3114.1. (TOS: "Tomorrow is Yesterday")
Brent, in science blue, was on the bridge helping out at engineering sub-systems station 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")
On stardate 3417.4, Brent, in science blue, was helping Dr. Leonard McCoy packing up and beaming up the possessions of the colonists on the planet Omicron Ceti III due to the bombardment of deadly berthold rays. But when Lieutenant DeSalle introduced to Dr. McCoy the pod plants, Brent was one of the first Enterprise crew members to be infected by the spores. This was the first and only time that Brent deserted the Enterprise and mutinied against his commanding officer, Kirk. When he and the other crew members were free of the influence of the spores Brent returned to duty. (TOS: "This Side of Paradise")
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")
On stardates 3198.4 and 3541.9, Brent had learned his lesson about staying up right by holding on to the railing when the Enterprise engaged the Klingons and then later Nomad. (TOS: "Errand of Mercy", "The Changeling")
In 2268, Brent, in science blue, temporarily relieved Spock at the bridge's main science station when Kirk spoke to Bela Okmyx and couldn't repress giggling when Kirk tried to explain to Okmyx how he and McCoy and Spock were going to beam down to Sigma Iotia II. Brent's giggling was so bad that the rest of the time Spock was on the planet Sigma Iotia II, he had to be relieved of duty at the main science station by Lieutenant Hadley. (TOS: "A Piece of the Action")
On stardate 4307.1, Brent, in science blue, assisted Dr. McCoy and Nurse Christine Chapel in sickbay when McCoy ordered stimulants administered to the crew when the Enterprise encountered an unexplained "zone of darkness" of space, even devoid of stars. Brent had to keep fellow crew members steady as Chapel administered the stimulants, due to many of them feeling devoid of energy and faint. On stardate 4308.8, Brent continued to assist McCoy and Chapel, in sickbay as even more of his fellow crew members started to feel even more litheless to the point where McCoy told Kirk that both the whole crew and the ship were dying. On stardate 4309.4, when the "zone of darkness" was discovered to be an enormous single-celled organism, that fed off energy enough to kill, and Spock in a shuttlecraft and the whole ship moved in closer to investigate and then to destroy the organism the Enterprise was again rocked violently. Brent, still in science blue, stationed at the bridge's environmental systems station was as with the rest of the bridge crew thrown by the rocking. Unfortunately for Brent, he was thrown the worse and farthest as he was thrown all the way from environmental systems station to the floor, on his back, in front of the turbolift. (TOS: "The Immunity Syndrome")
On stardate 4657.5, Brent, in command yellow, was working in environmental engineering when the Kelvan Milky Way Expeditions hijacked the Enterprise to return to their home world in the Andromeda Galaxy. He was immobilized and put into temporary "frozen" and motionless stasis by Kelvan Drea. On stardate 4658.9, the Kelvans temporarily neutralized Brent into a porous dehydrated cuboctahedron crystalline solid the size of a human fist, consisting of Brent's essential chemical elements and which represented the "distilled" essence of Brent's being, because the Kelvans considered Brent one of many non-essential personnel aboard the ship. Brent was 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"