"I'm not that green!"
- - Pavel Chekov, 2267
Pavel Andreievich Chekov (Russian Павел Андреевич Чехов) was a Human who served as a Starfleet officer during the latter half of the 23rd century. Although he mainly served as the navigator aboard the USS Enterprise and the USS Enterprise-A, he played a more variable role than other senior crew members under Captain James T. Kirk.
During the early-2260s, Pavel was romantically involved with Irina Galliulin, while they both attended the Academy together. The two had several disagreements before they parted ways: Pavel believed Irina to always be too free-spirited, Irina believed Pavel to have always been rigid. When Irina dropped out of the Academy, each accused the one of leaving the other. Pavel left, but came back to look for Irina, who was at the time staying in the city with friends. Irina would eventually join the counterculture movement of Dr. Sevrin, and his search for the mythical planet Eden. (TOS: "The Way to Eden")
The five-year mission
Chekov's first assignment, at the age of 22, was on the USS Enterprise under command of Captain James T. Kirk. He joined the crew sometime prior to 2267. (TOS: "Who Mourns for Adonais?", "Space Seed", "I, Mudd"; Star Trek II: The Wrath of Khan)
Chekov served a standard junior officer rotation, eventually earning the post of navigator, although he was also proficient with the science officer station, often serving at the post in Spock's absence. While acting the role of science adviser, Chekov made every attempt to be as thorough as possible.
While investigating a humanoid that could generate and control energy, who referred to himself as Apollo, in 2267, Chekov began to spout off information on similar creatures. After naming the electric eel and giant dry-worm, he was stopped by Dr. McCoy, who told him "not the whole encyclopedia, Chekov," later quipping on Chekov's dedicated thoroughness by stating: "Spock's contaminating this boy, Jim." (TOS: "Who Mourns for Adonais?")
After landing on a planet, the Enterprise's crew discovered Harcourt Fenton Mudd who had crashed on the planet. The planet was populated by androids who wished to use the Enterprise to visit other planets. The androids tempted Chekov with a planet full of beautiful women to serve him. In the end, the crew banded together and escaped the planet, leaving Mudd with 500 android replicas of his overbearing wife. (TOS: "I, Mudd")
During an away mission to deliver supplies to an Earth colony on planet Gamma Hydra IV, the crew found most of the colonists dead from rapid aging. On return to Enterprise the entire crew was infected with the disease–except Chekov, who was part of the away team. McCoy determined that the cure was adrenaline. Chekov had been so shocked upon finding the dead bodies on the planet that his adrenaline provided an immunity to the disease. (TOS: "The Deadly Years")
During shore leave on Deep Space K-7, Chekov, along with Uhura, brought one tribble to the Enterprise, which reproduced so fast that the ship became overrun with them in three days. (TOS: "The Trouble with Tribbles")
Chekov, Kirk, and Uhura were captured by alien beings who used them in gladiatorial combat, which the beings wagered on. Such captured beings were known as "thralls." One of the thralls, Tamoon, who was assigned to train Chekov in gladiatorial combat, developed romantic feelings toward him, leading to many unwelcome advances. (TOS: "The Gamesters of Triskelion")
In 2268, Chekov was killed during a mission to make contact with the Melkotians. The Melkotians considered the Humans as a disease that must be destroyed, and placed them in a frontier setting during the time of Wyatt Earp. The away team filled the role of the Clantons, one of the two major groups involved at the OK Corral gunfight. Chekov was killed by one of the Earps over a girl named Sylvia, who was in love with him, and not the Earp that wanted her. Spock realized that this simulation was not real, and thus the away team could not be hurt as long as they did not believe in the illusion. After successfully escaping the illusory Wild West setting, the crew was transported back to the Enterprise, along with Chekov who was alive once again. (TOS: "Spectre of the Gun")
Chekov was at navigation when he noticed the Enterprise navigation controls were not working, and then tried to assist Lieutenant Hadley, manning the helm, with the helm's stuck controls. That's when the Kelvan Hanar suddenly transported himself onto the bridge and put Chekov and the rest of the bridge crew into temporary 'frozen' and motionless stasis. Two other Kelvans, Tomar and Drea, had already seized control of Engineering and environmental engineering in a similar fashion. Thus began the attempted hijacking of the Enterprise by the Kelvan Milky Way Expedition so they could return to their home world in the Andromeda Galaxy. After the Enterprise successfully exited the Milky Way galaxy through the Galactic barrier, Kelvan leader Rojan neutralized Chekov into a porous dehydrated cuboctahedron solid, the size of a human fist, consisting of Chekov's essential chemical elements and that represented the "distilled" essence of Chekov's being, because he was considered along with most of the rest of the crew a non-essential personnel. Chekov was restored to normal when Kirk, Spock, McCoy and Scotty, the only four of the crew who were not neutralized, regained control of the Enterprise. (TOS: "By Any Other Name")
After the Starnes Exploration Party children were brought aboard the Enterprise from the planet Triacus, no one on board knew that the children were under the influence of Gorgan, who had given the children the ability of mind-control. This telekinesis had already caused the deaths of the children's parents and was the way in which Gorgan hoped to achieve galactic dominance by way of other children. The children used their mind-control on Chekov, Sulu and Uhura to make them believe that the Enterprise was still orbiting Triacus, when in actuality Chekov and Sulu had set course for Marcus XII, the intended next target for Gorgan. This also caused Kirk, unaware of the change of course and the departure from the orbit of Triacus, to have two Redshirts have their molecules beamed into and spread throughout space and to their deaths. Then Tommy Starnes manipulated, by telekinesis, Chekov, Security Chief Freeman and another Security Guard Redshirt attempted to arrest and put in the brig both Kirk and Spock because of false "orders" of Starfleet command. Kirk and Spock fought off Chekov, Freeman and the other Security Guard who were temporarily put in the brig themselves. Chekov was freed from the mind-control once the children were freed from the influence of Gorgan. (TOS: "And the Children Shall Lead")
Chekov was rendered unconscious by the Eymorg Kara when she boarded the Enterprise and used her control bracelet in order to steal Spock's brain. After the crew regained consciousness and found Spock's body without his brain and they found Kara's ship left an ion trail to the Sigma Draconis system, Chekov placed a schematic of the system on the bridge's viewscreen. A debate ensued between Chekov, Sulu and Uhura as to which of the three Class M planets they should look for Spock's brain, with Kirk reminding them that Dr. McCoy said that Spock would have only three hours to live without his brain. None of the three planets seemed capable of supporting interstellar flight, but Kirk's best hunch of where to look came from Uhura, who found large, regular energy pulsations on the otherwise glaciated and pre-industrial Sigma Draconis VI. Chekov was part of a landing party that also consisted of Kirk, Scotty, McCoy and two redshirts who beamed down to the surface of Sigma Draconis VI. There the landing party suffered an ambush by the Morg, primitive humanoid men until one of them was subdued by a phaser. The Morg that was hit hinted at "the Others" who gave "pain and delight", but seemingly the Morg had no mates and didn't know what a female was. Chekov then ran his tricorder and found evidence of an underground city. As Kirk, McCoy and Scotty went underground and found that the Eymorg were the females of the Morg, and then discovered Spock's brain was being used to power the city, Chekov used his phaser to heat a rock to keep him and the two redshirts warm. McCoy was able to get Spock's brain back in his head, just in the nick of time, and they met back up with Chekov and the two redshirts leaving the Eymorg to have to start living with the Morg. (TOS: "Spock's Brain")
Chekov was part of an away team that beamed aboard the starship USS Defiant, which was adrift in space. They discovered that the ship was dissolving. After beaming back to the Enterprise, Chekov attacked Spock in a fit of madness. The illness then spread throughout the ship. The dissolving of space was causing mental breakdowns in the crew. The crew rescued Kirk and escaped the Tholians. Order was restored. (TOS: "The Tholian Web")
In 2269, Chekov once again encountered his lost love, Irina. Although they were initially happy to see one another, Chekov adamantly disapproved of her new lifestyle and attempted to cast her off. She visited Chekov, who was working in Auxiliary Control assigned to help Spock locate Eden, to apologize for upsetting Pavel. Her ulterior motive, however, was to subtly use him to gain his knowledge of the systems of the ship, which were later used by Sevrin for hijacking the Enterprise. The two left each other once again, this time while saying "good-bye" to one another, as well as each with a better understanding of the other. (TOS: "The Way to Eden")
In 2285, Reliant was on a mission to find a suitable planet to conduct trials with the Genesis Device. When they explored Ceti Alpha V, Chekov and Captain Terrell encountered Khan Noonien Singh and his augments.
By putting Ceti eels inside their heads, Khan made them susceptible to his suggestions, his motive being to seek revenge on Admiral Kirk. Using Chekov and Terrell, Khan was able to seize the Reliant and subsequently steal the Genesis Device.
After Captain Terrell's death, and the departure of the Ceti eel from his head, Chekov recovered in time to help defeat Khan in the battle of the Mutara Nebula. Afterward he assumed the post of Enterprise's acting science officer following the death of Captain Spock. (Star Trek II: The Wrath of Khan; Star Trek III: The Search for Spock)
The Enterprise was disabled by a Klingon Bird-of-Prey in orbit around the Genesis Planet and was then self-destructed by Kirk (with help from Scotty and Chekov) to prevent its capture. Kirk and his crew later seized command of the Klingon ship, which they named the HMS Bounty.
Using the slingshot effect, the Bounty went back in time to 1986, to transport two Humpback whales to the 23rd century. While on Earth, Chekov and Uhura were part of "Team 2," assigned to locating and acquiring photons for recrystallizing the dilithium crystals aboard the Bounty.
Although the mission was a success in acquiring the necessary photons from the nuclear vessel, USS Enterprise, Chekov was captured by the ship's security. Accused of being a "Russkie," Chekov made a failed escape attempt from the aircraft carrier, only to become critically injured when he fell over fifty feet from the ship's hangar deck, running through an open hatch that led out to one of the ship's massive aircraft elevators.
Chekov was taken into emergency surgery at Mercy Hospital where he was diagnosed with a tearing of the middle meningeal artery after a fundoscopic examination. He would successfully be healed, narrowly escaping the removal of an Epidural hematoma by trepanation, and subsequently evacuated from the hospital by McCoy, Kirk and Gillian Taylor.
Upon returning to the 23rd century, Chekov and his shipmates faced court martial for their actions. However, they were eventually cleared of all charges and Chekov was reassigned as second officer, navigator and security chief on the USS Enterprise-A. (Star Trek IV: The Voyage Home)
In 2287, Chekov took command of the Enterprise-A and posed as "Captain Chekov" as a ruse to negotiate with Sybok for the hostages that the renegade Vulcan took on Nimbus III, while Kirk, Spock, Uhura, and a security team landed on the planet covertly by shuttlecraft. Chekov successfully distracted Sybok long enough for the landing party to launch an attack on Paradise City. (Star Trek V: The Final Frontier)
In 2293, Chekov undertook his final voyage on the Enterprise-A as part of the mission to escort the Klingon Chancellor to peace negotiations with the Federation. Chekov used his investigative science background to find forensic evidence linked to a Federation-Klingon conspiracy attempting to undermine the peace talks. After the Khitomer Conference, Chekov's last duty on the Enterprise-A was to man navigation and the helm for her decommissioning cruise. (Star Trek VI: The Undiscovered Country)
In the latter part of 2293, Commander Chekov was a guest of honor aboard the new USS Enterprise-B under the command of John Harriman. During the maiden voyage, Captain Kirk went missing (presumably swept into space) during a hull breach caused by a part of the Nexus energy ribbon when it collided with the Enterprise-B. (Star Trek Generations)
Pavel was very proud of his heritage. He often noted (sometimes erroneously) that most great inventions and events ever noted in history came from his homeland, which both amused and annoyed his crewmates:
- He claimed that the old Earth saying: "Fool me once, shame on you. Fool me twice, shame on me," was invented in Russia. (TOS: "Friday's Child")
- He claimed that the English story about the Cheshire Cat was a Russian story about a disappearing cat from Minsk. (TOS: "Who Mourns for Adonais?")
- He was also known to have made references to Peter the Great. (TOS: "The Trouble with Tribbles")
- He once sarcastically referred to himself as "the tsar of all the Russias" when meeting Apollo. (TOS: "Who Mourns for Adonais?")
- He claimed that the Garden of Eden was located just outside Moscow. He claimed that it was "a very nice place" and that "it must've made Adam and Eve very sad to leave." Which Kirk sarcastically responded with "Just..outside Moscow, all right" (TOS: "The Apple")
- He claimed that the region surrounding Sherman's Planet was first mapped by the famous Russian astronomer Ivan Burkoff, when in fact, it was discovered by John Burke, of the Royal Academy. (TOS: "The Trouble with Tribbles")
- He claimed that quadrotriticale was a Russian invention, when, in fact, it was invented in Canada. (TOS: "The Trouble with Tribbles")
- He claimed that scotch was invented by a little old lady from Leningrad. (TOS: "The Trouble with Tribbles")
- He was also fond of the Russian beverage vodka and referring to the Klingons, among other individuals, as Cossacks. (TOS: "The Trouble with Tribbles", "Spectre of the Gun", "Day of the Dove")
- He once referred to Harry Mudd as an "unprincipled evil-minded lecherous Kulak." He then commented that planet Mudd was "even better than Leningrad." (TOS: "I, Mudd")
- He claimed Cinderella was a Russian epic. (Star Trek VI: The Undiscovered Country)
In addition to these, Captain Kirk once stopped Lieutenant Sulu mid-sentence, while Sulu was referencing an incident in Siberia, and told Sulu, "If I wanted a Russian history lesson, I would have brought Mr. Chekov." (TOS: "That Which Survives", in which Chekov himself did not appear)
- 2245 : Born in Russia, on Earth
- ca. 2263 : Enrolls at Starfleet Academy, later graduates with the rank of ensign
- ca. 2267 : Assigned to USS Enterprise as navigator and relief science officer
- 2270 : The Enterprise's five-year mission ends.
- Early 2270s : Joins the refit Enterprise crew as lieutenant, assigned as security chief
- 2285 : Assigned to USS Reliant as commander, first officer. Assignment ends when the vessel is destroyed by Khan Noonien Singh. Chekov participates in the theft and destruction of Enterprise, and flees with Admiral Kirk's party to Vulcan
- 2286 : Charges against the crew and Chekov are dropped, Chekov becomes security chief of USS Enterprise-A
- 2287 : Temporarily in command of the Enterprise-A, acts as captain to negotiate with Sybok at Nimbus III
- 2293 : After helping to solve the Khitomer conspiracy, Chekov's assignment to the Enterprise-A ends when the vessel is scheduled for retirement. Chekov is a guest on board the new Enterprise-B.
- "Friday's Child"
- "Who Mourns for Adonais?"
- "Amok Time"
- "The Apple"
- "Mirror, Mirror"
- "The Deadly Years"
- "I, Mudd"
- "The Trouble with Tribbles"
- "Bread and Circuses"
- "Journey to Babel"
- "A Private Little War"
- "The Gamesters of Triskelion"
- "The Immunity Syndrome"
- "A Piece of the Action"
- "By Any Other Name"
- "Patterns of Force"
- "The Ultimate Computer"
- "Assignment: Earth"
- "Spectre of the Gun"
- "Elaan of Troyius"
- "The Paradise Syndrome"
- "The Enterprise Incident"
- "And the Children Shall Lead"
- "Spock's Brain"
- "Is There in Truth No Beauty?"
- "The Tholian Web"
- "For the World is Hollow and I Have Touched the Sky"
- "Day of the Dove"
- "Let That Be Your Last Battlefield"
- "The Mark of Gideon"
- "The Lights of Zetar"
- "The Way to Eden"
- "The Savage Curtain"
- "Turnabout Intruder"
- Star Trek films:
- DS9: "Trials and Tribble-ations" (archived footage)
Chekov was played by Walter Koenig, who joined the cast of Star Trek at the beginning of TOS Season 2, and filled in what were originally intended to be roles for Hikaru Sulu while George Takei spent much of this time involved in filming The Green Berets during Season 2. ("To Boldly Go...": Season 2, TOS Season 2 DVD special features)
According to Gene L. Coon in his The Making of Star Trek, Gene Roddenberry wanted to add in a young, Englishman to appeal to younger demographics. However, he received a written complaint from Russian sources, who complained that Star Trek–though trying to fashion a future where the world was united–was ignoring the USSR, which, at the time, was the leader in the Space Race. Roddenberry soon after altered his English youth into Pavel.
On the video release of "William Shatner's Star Trek Memories," Walter Koenig himself said that the Russians didn't say anything about there being no Russians on Enterprise and the Pravda article that Roddenberry and Coon referred to likely didn't exist because at the height of the Cold War, no American programming was airing in Russia. (Allan Asherman's The Star Trek Compendium says that the Pravda journalist "[had] seen a Star Trek episode televised in Germany", but Star Trek didn't air in Germany until 1972.) According to Koenig, the character was added to add Davy Jones-like appeal to the show and that the Russian heritage was added by Roddenberry indeed because he wanted to honor the fact that the Russians were the first people in space. In his first couple of episodes, Koenig indeed wore a Monkees style wig to look more like Davy Jones. ("To Boldly Go...": Season 2, TOS Season 2 DVD special features) (Ironically, during the time of TOS in the late 1960s, Soviet teens sporting this look, derisively called "haries" and viewed as dangerously rebellious by their elders, were often arrested and had their hair cut off by the police.) 
Chekov was the only main character from Star Trek not to appear in Star Trek: The Animated Series, due to budgetary constraints. (Inside Star Trek: The Real Story, p. 422) Nevertheless StarTrek.com has a TAS Chekov biography page explaining what he was up to away from the Enterprise in the years of The Animated Series. Koenig, however, was not entirely absent from the series; he did provide the script for "The Infinite Vulcan".
In Star Trek Generations, Chekov was briefly referred to as "Captain Chekov" by one of the reporters on the Enterprise-B. Chekov was referred to in the script as "Commander," and was still wearing a Commander's pin.
An episode was developed for the seventh season of Star Trek: The Next Generation that would have featured at 24th-Century Pavel Chekov. Writer Naren Shankar is quoted in the September 1994 issue of Sci Fi Universe: "It never went anywhere. I was working on a Chekov story where he returns as a prisoner-of-war from a planet where he was imprisoned for many years and finally released. Now he has come back as an ambassador to help the Federation open up diplomatic relations, like Vietnam, essentially. The story was going to be about Worf and Chekov, because they're both Russian and Worf has heard about him and they kind of strike up a relationship together. Throughout the course of the negotiations with these people, it appears as though Chekov is sabotaging them. It turns out he is plotting to use the Enterprise to lay waste to their capital for revenge and to screw things up for the Federation because he feels they abandoned him and let these people torture him."
One of his costumes was added to the ScienceFictionArchives.com collection and was showcased at Paris science museum during 2010-2011 exhibition "Science (and) Fiction: Imagination Meets Reality".
In the Star Trek: Starfleet Academy game, Chekov claims he was stationed on planet Benderi IV prior to joining the Enterprise where he had a commanding officer who believed getting angry was unprofessional and bottled up her rage until it exploded. He also authored several simulator missions used at the academy.
In the novel To Reign in Hell: The Exile of Khan Noonien Singh, Chekov led the security team that delivered Khan and his followers to Ceti Alpha V's surface. Khan remembers Chekov as having led a courageous but failed attempt to retake the engine room during Khan's brief takeover of the Enterprise. This coincides with both Khan's recognition of Chekov, as well as Chekov's comment in the novelization for Star Trek II: The Wrath of Khan that he had seen the world Khan had been left on.
After Chekov's final appearance in Generations (circa 2293), and the reference that a starship would be named after him by 2367, no canon information exists on how he lived out the rest of his days, or what fate he met. According to The Sundered, the first book in the Star Trek: The Lost Era series, Chekov served as executive officer of the USS Excelsior from 2293 through at least part of 2298. Chekov is mentioned in TNG-era novels from Pocket Books, such as Judith and Garfield Reeves-Stevens's Federation. That novel mentioned him becoming an admiral after commanding both the USS Potemkin and USS Cydonia. The Reeves-Stevenses collaborated with William Shatner on The Return, which had Chekov becoming Fleet Admiral. In Exodus, a novel in the Star Trek: Vulcan's Soul series by Josepha Sherman and Susan Shwartz, one plot thread had Chekov still be alive by the time of the Dominion War, along with Admiral Uhura.