List of Star Trek aliens

Star Trek is a science fiction media franchise that began with Gene Roddenberry's launch of the original Star Trek television series in 1966. Its success led to numerous films, novels, comics, and spinoff series. A major motif of the franchise involves encounters with various alien races throughout the galaxy. These fictional alien races are listed here.
Notable Star Trek races include Vulcans, Klingons, and the Borg. Some aspects of these fictional races became well known in American pop culture, such as the Vulcan salute and the Borg phrase, "Resistance is futile."
Star Trek aliens have been featured in Time magazine, which described how they are essential to the franchise's narrative.

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Race	Home planet	Episodes
Race	Description	Episodes
Gorn	Unknown, Beta Quadrant	"Arena" "The Time Trap" "In a Mirror, Darkly Part 2" "Memento Mori" "Hegemony"
Gorn	The Gorn are a violent species who are known for kidnapping large groups of people to serve as incubators for their eggs which they implant inside the body, typically killing the individual when the eggs hatch. Kirk fights with this lizard-like alien in the 1967 "Arena" episode of the original Star Trek series. Several Gorn ships attack the Enterprise while under Captain Pike's command. In 2017, Den of Geek ranked Gorn the 23rd best alien species of the Star Trek franchise.	"Arena" "The Time Trap" "In a Mirror, Darkly Part 2" "Memento Mori" "Hegemony"

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Race	Home planet	Episodes
Race	Description	Episodes
Jem'Hadar	Unknown, Gamma Quadrant	"The Jem'Hadar" ; Star Trek: Deep Space Nine passim
Jem'Hadar	The Jem'Hadar feature in Star Trek: Deep Space Nine, first introduced in the episode "The Jem'Hadar". They are the shock troops of the powerful Dominion, located in the Gamma Quadrant. Genetically engineered for strength and resolve, they are also short-lived and believe that "victory is life". They are bred to perceive the Founders – enigmatic shape shifters who rule the massive Dominion – as gods and are incapable of harming them. The Jem'Hadar are noted as being able to camouflage themselves with their surroundings and depend upon the drug Ketracel White, a substance made and distributed by the Founders as a means of control; their ships have no chairs, replicators, or medical facilities. The Jem'Hadar's numbers are unknown, but they are produced by the thousands as needed. Conceived as "more than just another fearsome alien", the Deep Space Nine makeup department searched for concepts depicting "toughness and resiliency" in the design of the Jem'Hadar. The final design was based on a rhinoceros, with some added ceratopsian traits. Originally designed on the premise that they were all clones, the first Jem'Hadar seen onscreen were all made to look identical to one another. However, as they became more deeply woven into the storylines, each Jem'Hadar was given a distinctive look. In 2017, ScreenRant ranked the Jem'Hadar as the 7th most bizarre aliens in Star Trek. In 2017, Den of Geek ranked the Jem'Hadar the 11th best aliens of the Star Trek franchise.	"The Jem'Hadar" ; Star Trek: Deep Space Nine passim

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Race	Home planet	Episodes
Race	Description	Episodes
Pakled	Pakled Planet	"Samaritan Snare" "Brothers" M "No Small Parts", "The Spy Humongous", "we Duj" "First First Contact" M.
Pakled	The Pakled are a species of spacefaring humanoids who obtain technology from other races, often through trickery. They first appeared in the TNG episode "Samaritan Snare," where the Pakled ship Mondor feigned needing repairs. After Chief Engineer Geordi La Forge was transported to the Mondor and completed repairs, the Pakled captured him and demanded weapons technologies. The Pakled do not appear again but are mentioned in the TNG episode "Brothers" as the Pakleds inadvertently having rescued Data's brother Lore, who was beamed into space at the end of "Datalore". They appeared again in Star Trek: Lower Decks Season 1 episode "No Small Parts" as the antagonists. The Pakleds, having upgraded their ships using scavenged technology from dozens of species, destroy the U.S.S. Solvang, and cause severe damage to the U.S.S. Cerritos, before being chased away by the Cerritos and U.S.S. Titan commanded by Captain William T. Riker.	"Samaritan Snare" "Brothers" M "No Small Parts", "The Spy Humongous", "we Duj" "First First Contact" M.

Q

Race	Home planet	Episodes
Race	Description	Episodes
Q	Unknown	"Encounter at Farpoint", "Q Who", "Deja Q", "Hide and Q", "Devil's Due", "Qpid", "True Q", "Tapestry", "All Good Things..." "Q-Less" "Death Wish", "The Q and the Grey", "Q2" "Cupid's Errant Arrow" M "Veritas"
Q	The Q are immortal, seemingly omnipotent creatures, all named Q. Q is their collective name and the name of their Continuum. One Q is particularly interested in humanity and enjoys repeatedly causing trouble for Captains Picard and Janeway and once for Sisko. The proper Q form is never seen as they claim other races cannot comprehend it. The Q was introduced on Star Trek: The Next Generation.	"Encounter at Farpoint", "Q Who", "Deja Q", "Hide and Q", "Devil's Due", "Qpid", "True Q", "Tapestry", "All Good Things..." "Q-Less" "Death Wish", "The Q and the Grey", "Q2" "Cupid's Errant Arrow" M "Veritas"

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First appearance

The Xindi's presence was established in the second-season finale of Star Trek: Enterprise, "The Expanse", in which the Xindi launched a probe that attacked Earth in April 2153, killing seven million people in a strip of destruction stretching from Florida to Venezuela. They appeared again in the third-season premiere, "The Xindi," to play a significant role in the primary story arc of season three.

Xindi history

The Xindi are a collective of six intelligent species that evolved simultaneously on the same planet. Despite the radically different appearance of all six species, they all share identical ridges on their cheekbones and have very similar DNA. All six of these species were involved in a war lasting about 100 years and ending in the 2030s. Alliances among the Xindi species were forged and changed continuously throughout the war, so much that most Xindi forgot what started it 50–60 years into the fight. Everyone remembered how it ended, however. In desperation, the Insectoids and Reptilians detonated several charges beneath the eight most enormous seismic fissures of the geologically unstable planet Xindus, leading to its destruction and, ultimately, the extinction of the Avian race.
After the war, the Xindi scattered throughout the Expanse into several colonies. They are passionate about establishing a new homeworld and unifying all Xindi. Still, they differ significantly on how to accomplish this and who should hold the ultimate reins of power. The Xindi then spent the early part of 2153 deciding how to confront the threat of humanity and planned a biological weapon based on the human genetic profile. This was ultimately rejected by the Xindi Council, so they worked on a weapon to destroy Earth.
In Star Trek Beyond, Krall, formerly Captain Balthazar Edison, is mentioned to have fought the Xindi and is enraged by the idea of making peace with them and other enemies such as the Romulans.

Sphere Builders

The Xindi were pawns in the Temporal Cold War, as interference in their history began shortly after the ending of their civil war, with the appearance of a trans-dimensional alien race who guided them to new homelands and resources. The Xindi came to revere these "Guardians," whom they later understood to be the same species as the "Sphere Builders." These aliens were also similarly revered by the Trianon, who believed that deities, which they called "The Makers," constructed the spheres to transform the expanse into a paradise. This led to a devastating religious civil war, as seen in the episode "Chosen Realm."
The Xindi were also informed by the Guardians, at least as early as 2152, that they would be victims of a genocidal attack from humans in the 26th century. Following their guidance, the Xindi launched a preemptive test strike on Earth as a precursor to a devastating second attack. In Daniels' timeline, Xindi crewmen serve in the Federation in the 26th century, in a battle with humans and Xindi, against the Sphere Builders. With the help of Captain Archer's evidence of future cooperation, the Xindi Council began to split over the issue of whether the Guardians were the real enemy. The split widened when Reptilian Council Member Dolim killed Primate Council Member Degra.
With the help of the Guardians, the Reptilians and Insectoids then took control of the finished Xindi weapon and set on a course for Earth, thus triggering a new civil war. A combined fleet of Arboreals, Primates, and Aquatics pursued the weapon. En route to Earth, a rift appeared in the Reptilian-Insectoid alliance when the Insectoids proposed delaying the destruction of Earth in light of Archer's revelation about the true nature of the Sphere Builders. The Reptilians determined to see the task completed and eliminated the accompanying Insectoid vessel. Arriving near Earth, an Andorian ship, commanded by Shran, suddenly destroyed the Reptilian ship, allowing humans to board the Xindi weapon and destroy it. At the same time, Enterprise was able to destroy the entire sphere network, stopping the spatial anomalies. With the Sphere Builder threat ended, the Xindi Council reconvened, and the Xindi abandoned their belief in the Guardians and their hostile intent toward humans.