Much like the journeys of the protagonists themselves, Star Trek has introduced viewers to all kinds of fascinating alien species from all corners of the galaxy.
Learning about these species and seeing how the Star Fleet crew interact with them is one of the biggest draws of the show. The creators of Star Trek have concocted some truly memorable species over the years.
They range in philosophies from the proud warrior race of the Klingons to the stoic logical people of Vulcan. They range in physiology from the cybernetic Borg to the metamorphic Changelings.
Some have been enduring allies of the United Federation of Planets and some have been hostile to the Federation since their first introduction.
Many species on Star Trek were initially based on exploring some question or aspect of the Human condition, as Star Trek is known for. However, each of these species have grown into well-rounded and formidable characters in their own right.
Here are The 15 Strongest Star Trek Species, Ranked From Weakest To Most Powerful!
15 THE XINDI
The Xindi were in fact a collection of five distinct species that were all native to the planet Xindus.
Many years before the Enterprise NX-01 encountered the Xindi, there was a civil war between the different Xindi species.
The Xindi-Insectoid and Xindi-Reptilian peoples became so distrustful of each other that they both contributed to the annihilation of their home world.
Even after their world was destroyed, the Xindi endured as an alliance of space-faring, intelligent species. The transdimentional Sphere Builders guided the surviving species to habitable planets and urged them to construct massive celestial weapons.
Taking advantage of the Xindis’ reverence for them, the Builders foretold that Humans would be responsible for the destruction of their future homeworld in the 26th century. The Xindi weapons were each capable of destroying entire planets.
14 THE THOLIANS
The Tholians were a-non humanoid, enigmatic species. There were first introduced to Star Trek audiences in the Original Series as an alien antagonist.
After trapping another Federation vessel, the Defiant, The Tholians attempted to trap the Enterprise within their formidable web. The so-called Tholian Web was projected and woven in space by the Tholian vessels themselves and comprised of interconnected energy filaments.
Tholians were an instant fan favorite, despite remaining so mysterious. There were mentioned again in subsequent Star Trek series but they didn’t reappear on screen again until Star Trek: Enterprise.
Their modern appearance was akin to a crystalline spider with average height comparable to humans. It turned out that the Incident with the Defiant linked back in time and to the Mirror Universe. Captain Jonathan Archer of the Enterprise NX-01 was also trapped by the Tholians.
13 THE HIROGEN
The Hirogen were one of the most dominant species in the Delta Quadrant when the Starship Voyager encountered them in the 24th century. T
heir cultured revolved around a primal honor code of hunting other sentient species whom they regarded as prey.
Physically, they were very imposing with great height and broad composite armor. Every aspect of their technology enhanced their martial and hunting capabilities.
A single Hirogen hunting vessel required minimal crew and could dominate regions of space spanning many lightyears. The Voyager crew encountered city sized holodeck programs designed for training hunters built inside space stations.
They even captured the Voyager crew and forced them to participate in a holodeck reimagining of Nazi Germany while brainwashed into playing the part of a local resistance.
12 THE KLINGONS
Klingons are one of the most popular and enduring staple races in the Star Trek franchise. They weren’t very distinct when they were first introduced in the Original Series but their reputation as honorable warriors has grown with each new series.
Their zeal for combat and glory made them a formidable military throughout the galaxy.
Most Klingons, both male and female are individually fierce fighters as well. Throughout their lives they undergo grueling rites of passage, usually involving pain sticks.
Though Klingon society is ostensibly ruled by a common sense of honor and tradition, the Empire has suffered dearly from political double dealings and infighting. Lt. Worf of the Enterprise experienced and fought against these first hand.
As the Federation has learned again and again, the Klingon Empire could be a fearsome ally or enemy.
11 THE ROMULANS
The Romulans share a common ancestor with Vulcans, but they have been a philosophically distinct faction in the galaxy for thousands of years.
Whereas Vulcans value logic and foster harmony, Romulans value ambition and rely on cunning to advance themselves. Advancement in the military was the greatest honor a Romulan could earn.
While the Federation and the Klingon Empire engaged in open hostilities for many years, the Romulans played the waiting game. They were barely known to the Federation until Captain Picard’s time. Many intergalactic crises were perpetrated by Romulan masterminds.
Romulans are probably the most notorious species in Star Trek to harness cloaking technology in all of their combat worthy starships.
This made their armada one of the most fearsome in the galaxy.
Besides their underhandedness, Romulans are also known for their arrogance and xenophobia. They have rarely sought or accepted earnest alliances with other races.
10 THE CARDASSIANS
Even more so than Klingons or Romulans, Cardassians are the most notorious for their ruthlessness. Their society was strictly regimented and militaristic with publically broadcast trials in which the accused was always presumed guilty.
Cardassians always seemed to engage in dangerous mind games with their enemies and even with friends and family.
They carried out many atrocities in their zeal to dominate the galaxy and grown their “Union." The most serious of these was the conquest and authoritarian occupation of Bajor in which millions of Bajorans were imprisoned, tortured, and/or destroyed.
Their power and influence shrank after successive wars with the Federation and the Klingons. However, they continued to threaten the Alpha Quadrant when Gul Dukat enlisted the Cardassians as a member of the Dominion.
Throughout the Dominion war, the Cardassians often served as the first wave of attacks on Federation targets.
9 THE VULCANS
The Vulcans were the first extraterrestrial species encountered by Humans in Star Trek. With Vulcan help and guidance, Humans rose to become a major player on the galactic stage and both species were founding members of the United Federation of Planets.
Vulcans were once a highly emotional and volatile species until they adopted the teachings of Surak and embraced logic and stoicism.
While they are highly advanced and enlightened they still carry some hold overs from their more primitive state and are not to be trifled with.
Vulcans are extremely resilient mentally and physically. Many Vulcans are capable of incapacitating another sentient with a single touch of a technique called the Vulcan nerve pinch.
They also enter a state of life and death lust every seven years called the pon farr.
8 THE NACENE
Star Trek viewers have only encountered two members of the species called the Nacene. The one called the Caretaker was responsible for generating the displacement wave that brought the Starship Voyager thousands of lightyears across the galaxy to the Delta Quadrant.
The Nacene themselves were a highly advanced species not even native to the Milky Way Galaxy. As explorers, their technology let them cross vast interstellar distances.
However, the Caretaker’s arrival unintentionally wrought devastation on the Ocampa home world. The Caretaker and his mate agreed to remain as penance, protecting and nurturing the Ocampa for thousands of years.
The Caretaker’s array seemed to be a typical example of their advanced transportation and holographic technology.
Had Captain Janeway not decided to destroy it, it could have let Voyager traverse the thousands of lightyears back to the Alpha Quandrant instantaneously.
7 THE PROPHETS
The Prophets, also known as the “Wormhole Aliens” to non-Bajorans, resided within the stable Bajoran wormhole between the Alpha Quadrant and the Gamma Quadrant.
In ancient times on Bajor, certain Bajorans experienced visions when they encountered majestic orbs. Over time the visions led the Bajorans to establish a religion based on the Prophets.
The Prophets are sufficiently alien from humanoid lifeforms that emotional concepts like love or grief and even the concept of linear time are incomprehensible to them. They are solely concerned with their own perception of the welfare of Bajor.
To do their will, the Prophets are capable of possessing corporeal hosts.
They also can probe the minds of those to whom they grant visions, appearing as familiar figures from that person’s life based on the type of message they want to convey.
With Captain Sisko as their Emissary, they heavily shaped the course of the Dominion War.
6 THE BREEN
The Breen are as dangerous as they are mysterious. They are only ever seen in their armored regeneration suits and only speak in digitized gibberish. They are also immune to empaths and lack any conventional circulatory system.
Also, they are devastating in combat. During the Second Klingon Empire, an entire fleet of Klingon warships invaded Breen space. Not only were they repelled but the fleet was never heard from again.
Even the Romulans and the Cardassians are openly wary of the Breen: “Never turn your back on a Breen.”
They have no apparent rules of engagement and focus purely on destroying their opponents by any means necessary. They even carried out a successful attack on Star Fleet Headquarters in San Francisco at the start of the Dominion War.
5 THE BORG
The Borg are a cybernetic collective of drones all focused on assimilating more species and technology into their society. In doing so, they would expand their biological and technological distinctiveness and advance towards a goal of perfection. But that makes it sound so clinical.
Throughout the galaxy, the Borg are considered an implacable menace.
They have invaded thousands of worlds and forcibly assimilated billions of individuals.
Once an individual is assimilated, their bodies and minds are reprogramed to serve the collective. Their efficient geometric vessels and each drone can rapidly adapt to almost any kind of conventional weaponry used against them.
By all counts the Borg should have conquered the galaxy by now. The Federation has only managed to defeat the Borg through sheer feats of ingenuity and daring. And some pretty convenient story writing.
4 SPECIES 8472
While they may only be known by their Borg designation, Species 8472 are a highly evolved biological terror. They are large tripedal creatures with devastating claws and keen telepathic senses.
They do not require atmosphere for respiration or locomotion. The species had developed a highly advanced bio-technology that let individuals integrate with their vessels.
Species 8472 are so biologically advanced that they were able to overpower the Borg when the Borg invaded their native domain of fluidic space. Species 8472 was even on the verge of winning the war against the Borg before Captain Janeway allied with the Borg.
As the only sentient species native to fluidic space, the invasion by the Borg prompted Species 8472 to launch a genocidal retaliation against all the weak and impure species of the galaxy.
They could have easily succeeded if Captain Janeway didn’t mend relations with them later on.
3 THE JEM’HADAR
The Jem’Hadar are a race of reptilian hybrids genetically engineered by the rulers of the Dominion in the Gamma Quadrant.
Their sole purpose in life is to fight and sacrifice themselves for the Dominion in battle. To this end, the Jem’Hadar were engineered with astounding strength and resilience, but also a rapid lifecycle.
They were also physiologically conditioned from birth into worshipping the Founders and yearning for battle.
Each Jem’Hadar could naturally camouflage themselves with their surroundings, making them even more dangerous.
However, they are most dangerous when their supply of Ketracel White runs out. The Jem’Hadar depended on it and were addicted to it for their very sanity. With it, they remain focused and obedient. Without it, they would blindly charge into battle and even attack their fellows and superiors.
2 THE CHANGELINGS
In their natural state, the Changelings are a gelatinous species capable of shifting into many different humanoid forms. In their past they were persecuted by the “solid” species of the Gamma quadrant.
Their xenophobia and isolationism became so pronounced that the Changelings established the Dominion and sought to bring conformity and order to the entire galaxy.
They genetically engineered the Jem’Hadar to be their soldiers and the Vorta to be their agents. They had also dispatched 100 Changelings throughout the wider galaxy to learn as much as they could about other worlds and species, including Odo.
Odo turned out to be one of the more friendly Changelings and gained an appreciation for the “solid” species.
Others in the hundred infiltrated the Klingons, the Romulans, and the Cardassians in secret and destabilized them ahead of the Federation-Dominion War.
1 THE Q
Being omnipotent just about ends any discussion on ranking. The Q, as they called themselves, were a species of god-like beings inhabiting a separate plane of existence called the Q Continuum.
They were supposedly omnipotent, omniscient, and omnipresent, at least according to themselves.
Regardless, the Q were capable of conventionally impossible feats with a snap of their fingers. They have instantaneously transported Starship crews into alternate realities.
They have transported themselves and others through time and back again. They are capable of conjuring objects and people in an instant and making them disappear just as quickly.
Whether they evolved into this state or have essentially always existed, the Q watch over the universe with smug distain or amusement.
From time to time, they appear to the various crews of Star Fleet to vex them with dire tests, judging the merits of their civilizations.
Do you agree with our rankings? Are there any other powerful Star Trek species you think deserves a spot on the list? Let us know in the comments!