FEN

The Fen were a barely sentient race of large jellyfish-like creatures that inhabit certain areas of hyperspace.

Though there is no known instance of a Fen ever consuming a Starship, they are attracted to metallic objects.  

SOurce: Babylon 5 universe,  The Well of Forever

BALOSIANS

Planet of Origin: Balos

The Balosians are a humanoid species which developed a small space faring civilisation and became member the League of Non-Aligned Worlds. Balosians can be distinguished by their elongated, almost cone-like skulls that gently curve backwards. They were close to the Markab.

Source: Babylon 5, Deathwalker (episode), Born to the Purple

IKSHA

Planet of Origin: Ikos

The Iksha are a fish-like humanoid species with scaly heads and bodies which developed a space faring civilisation were a member race of the League of Non-Aligned Worlds and one of the many affected by the Dilgar invasion of the Non-Aligned sectors in 2230. 

Source: Babylon 5, Deathwalker (episode)

ONTEEN

Planet : Aicha
Onteen are oviparous human-looking humanoids who developed a small space faring civilisation. They do not give birth to live young but lay eggs that incubate and later hatch. Onteen hatchlings, though able to free themselves and crawl out of their egg at at birth are still very vulnerable and small enough to fit into the cradled hands of an average humanoid hand. Onteen have a series of internal air bladders that can become blocked as a result of infection or as a reaction to injury.

At least one sect of Onteen faith refers to themselves as the "Children of Time", believing that those born of the egg are the Chosen of God. This faith centres around the worship the "Great Egg" and involves belief in concepts they refer to as the Great Journey, the Great Song. The Children of Time have a very strict religious prohibition against puncturing the body, believing that the soul will escape the body and allow a demon to take it's place. If this happens then the individual is either cast out or ritually put to death, an act that is considered to be an act of mercy as it is freeing the body from it's misery. Onteen have been known to be uncomfortable with egg-eating species.

Source: Babylon 5

FIRST ONES: FIRST BORN / SPEAKERS

 

Evolving to sapience billions of years ago, The First Born and Lorien, the first among them, were humanoids born naturally immortal, never aging though still susceptible to death by injury or illness. At first they were kept in balance by the race's relatively low birthrates with less than a handful each year. Over time this changed as the younger generations began to grow old, infirm and died, until eventually only those that came first remained. They developed a peaceful advanced civilisation and eventually left their homeworld to explore the galaxy. In their travels they visited countless worlds and found many infant races. Thye acted as teachers and guardians before eventually stepping aside and allowing them to make their own paths, creating great empires, exploring and founding even younger races to whom they became teachers and guardians.

Gradually, over the course of a million years, the First Born who did not perish through injury or illness and most of their remaining pupils left the galaxy. Of those few who were left behind, Lorien was the only First Born to remain while among the handful of First Ones that did not leave, the Vorlons and Shadows took up the responsibility of the sole guardians and protectors of the younger races. Lorien eventually withdrew and dwelt deep beneath the planet that would become known as Z'ha'dum. He would remain there for a million years, but never forgotten by those he had taught. The Shadows, in their endless series of conflicts would always eventually return to the planet after being driven off, in respect for Lorien. 

In 2261, Lorien left Z'ha'dum and helped bring an end to the Shadow and Vorlon conflict and left the Galaxy with his remaining pupils, mainly the Shadows and Vorlons. 

The First Born are nowadays able to appear in their original humanoid form and in an evolved non-corporeal form which can travel through space at FTL speeds. They possess tremendous psychic powers.

Source: Babylon 5 universe

CENTAURI

Planet of Origin: Centauri Prime (not situated in the Centaurus constellation and whose name is supposedly due to mistranslation during first contact between humans and the Centauri) , a small Earth-like planet consisting of two large continents and several smaller islands divided by large oceans of water.  The planet has a population of about 3.4 billions in the 23rd century.

The Centauri Republic is, despite its name, ruled by a powerful Emperoror, in the event of an interregnum, a Regent. The only real check on the monarch's power resides in the Centaurum, an assembly of Ministers and heads of various Houses. Nobles able to manipulate the Centaurum successfully are able to wield great power.  Everything seemed to involve strategic moves and countermoves, strategy games "for keeps" with covert or overt ruthlessness.The Centaurum can vote to overturn a decree of the monarch, although this would appear to be a rare practice. Culturally obsessed with rank, social position, wealth, and powe, the Centauri are not a democracy; the average citizen has little or no political power within the Republic, slavery is legal, but as a form of social stratification, not racial discrimination – many slaves are disenfranchised nobles

The Centauri are humanoid in appearance, similar enough to humans that the species can easily pass for one another under casual inspection. However, in terms of internal structure there are several important differences between the two species. Centauri teeth, for instance, are somewhat pointed. Unlike Humans, the Centauri have no major arteries in their wrists. The sexual organs of the Centauri are quite different from those of humans, and they are in a different location than the human sex organs. Male Centauri have six tentacle-like genital organs that extend out from the sides of the body and "fold" in over the solar plexus when not in use. The males can stretch the tentacles out to four feet. These tentacles are somewhat prehensile. Females have six narrow receptive orifices, three on either side of the base of the spine, just above the hips. During sexual intercourse the male inserts his tentacles in the female's orifices individually. Only a single insertion is necessary to inseminate, but "each [successive] one is a different level of intimacy and pleasure". The cardio-vascular system of Centauri includes two hearts. The right heart is a solid mass of muscle which provides most of the force behind the body's blood circulation. The left heart is much more complex - this heart is made up of an intricate system of thousands of veins that help cleanse the blood in a manner similar to the human kidneys.  As a result, a heart attack in the left heart is a very serious matter because the left heart is very difficult to repair. Their network of blood vessels is also somewhat different than in humans, as they do not have major blood vessels in their wrists.

The Centauri have extra-sensory perception to varying degrees, including precognitive abilities. Most Centauri have limited perceptions, enjoying only rare fleeting glimpses of the future. All Centauri, throughout their lives experience vivid prophetic dreams telling them of the time and the circumstances of their deaths. A rare few Centauri, exclusively female, have very strong prophetic abilities. These females are often given a special status in Centauri society that is much higher than would normally be given to a female. A number of Centauri have telepathic ability. Like humans, the degree of telepathic ability varies with the individual. Unlike humans, who have had proven telepaths for only a few generations, Centauri possess a far greater understanding of the skill, and permit those who possess it far more latitude. The Centauri Emperor was rarely seen without the Imperial Tetrapathy – a quartet of female telepaths who have maintained a telepathic link since infancy. This link is thus so strong that it has effectively unlimited range. Whenever the Emperor leaves Centauri Prime, two of the Tetrapathy accompanied him and two remained at the royal palace, allowing rapid communication between the Emperor and the homeworld at all times. This, however, changed upon the accession of Emperor Cartagia, who had them executed as one of his first official acts.

Centauri males of high social status typically wear their hair in Peacock-tail shaped fans, the length and style of which are determined by relative social class. Low-class Centauri males have not been seen without helmets. Centauri females mostly or entirely shave their heads. Their dress and customs reflect their imperialistic culture, with militaristic clothing reminiscent of the Earth 18th century for the men, gowns for the women the design of which is comparable to those of the same Earth era, and a generally courtly manner one would expect to find in Victorian England (without the Puritanical streak) or Imperial France (with the associated decadence).

Around the earth year 3000 BCE the first true Centauri civilization appeared. This rapid burst of technological development was the result of competition with another sapient species on their world called the Xon. First contact occurred circa 800 BCE when a Centauri expedition of three vessels happened upon a Xon coastal city. The vessels returned to the Centauri continent, carrying a Xon invasion force, its original Centauri crew having been slaughtered. As the Centauri entered a historical period similar to the Renaissance, the Xon began attacking and raiding Centauri villages in small-scale regional wars. The Xon then began a massive campaign to dominate the Centauri on a global scale. The Centauri-Xon war would last for a thousand years. Although technologically inferior to the Centauri, the Xon were physically larger and stronger and possessed superior endurance. The conflict drove the Centauri to greatly advance their level of technology, exceeding the limited capabilities of the Xon and eventually the Xon were eradicated. By this time the Centauri Republic had enteredthe Industrial Age.

Defeat of the Xon gave rise to the current class structure of modern Centauri society. Centauri families who had done the bulk of the fighting, and had the most survivors at the end of the war, became the great houses of the Centauri. This new government of nobles created the Centaurum. The nobles appointed Lord Tuscano, who led the war against the Xon, to the position of Emperor. These noble families would maintain their power and privileges for the ages to come. Centauri females were relegated into the roles of mothers and housewives, as the nobles believed that females needed to focus on bearing children and rebuilding the population instead of competing with males for power and social position. Even in the 23rd Century, Centauri females are discouraged from seeking power or careers for themselves – though many females are the "power behind the throne" in their houses, skilled in deception and manipulation. The widows of many powerful leaders are often considered conduits to their deceased spouses, and wield impressive power.

According to some sources, a species called the Shoggren attacked Centauri Prime during Tuscano's rule. Technomages supported Tuscano, providing some advanced technology. The Centauri with this outside support defeated the Shoggren. The technology acquired from the invaders and the discovery of a Jumpgate in the Centauri system allowed the Centauri to leap ahead technologically and begin the modern Centauri Republic's interstellar conquests.

The Centauri Republic quickly began a period of expansion spanning the centuries before the second Shadow War and the birth of the Interstellar Alliance. By 2257 A.D. the population of Centauri Prime was only about 3.4 billions. However this is a little over a fifth of the fourteen billion total Centauri population. The Centauri first left their homeworld soon after the first Shadow War and were oblivious to it.

At its greatest extent, hundreds of worlds were subject to the Centauri Republic. The occupation of the Narn homeworld began in the early 22nd Century. For the next hundred years the agrarian and technologically primitive Narns were exploited and their world stripped of resources. The Centauri withdrew a hundred years later in the face of growing Narn resistance. By 2258 the Centauri Empire had dwindled to a few colony worlds and Centauri Prime itself, seemingly more through the growing apathy and decadence of the Republic than military inferiority.

Beginning in 2258, the Centauri once again mapped out a path of conquest, taking over not just Narn space but also worlds formerly belonging to the Drazi, pak'ma'ra, and other members of the League of Non-Aligned Worlds. The revival of Centauri power and territory was made possible by their covert alliance with the Shadows, an ancient and extremely powerful alien race which was using the Centauri for their own ends. The Shadows were allowed to base a fleet of their ships on an island on Centauri Prime. This move nearly led to the total destruction of Centauri Prime by a massive Vorlon warship which had traveled to Centauri space to eradicate any Shadow influence from the planet. The Shadow vessels were destroyed by Londo Mollari, the acting Prime Minister, and the planet was saved. However, the Shadow's former servants and soldiers, the Drakh, decided to secretly settle on Centauri Prime, which they remembered from the Shadow occupation, and make it their new home. The Drakh secretly gained control of the Regent and used him to start a war with the other worlds of the Interstellar Alliance in 2262. The destruction of civilian shipping by the Drakh was blamed on the Centauri. Thanks to the Drakh's random attacks on alien shipping, almost every other race fought the Centauri during the war, leaving them almost completely isolated, which was the Drakh's intention. Near the end of the conflict a large force of Narn and Drazi warships made for Centauri Prime, while Drakh agents forced the Regent to deactivate the planetary defences and send any warships defending the planet away on a false mission.

The Narn-Drazi fleet bombarded Centauri Prime and the planet was laid waste, with most of its major cities reduced to rubble and many civilians killed. The Drakh then forced Londo Mollari to accept their secret control of Centauri Prime by threatening to detonate nuclear bombs hidden under the planet's major cities, which would have killed billions more people and totally destroyed Centauri civilization. The Regent was killed, and Mollari was crowned the Emperor of the Centauri, as a puppet for the Drakh. Under the Drakh's direction the Centauri severed all relations with the Interstellar Alliance. By 2278 little was left of the grandeur of the Centauri save their pride, their patriotism, and their determination to rebuild their devastated planet.After the death of Emperor Mollari. Vir Cotto, the Emperor's close aide, went to Minbar, and met with the surviving leaders of the Centauri noble houses. In keeping with Lady Morella's prophecy, Vir's claim to the throne was accepted, and he became Emperor Cotto. The Interstellar Alliance, finally realizing that they were both the victims of a massive Drakh manipulation, joined forces with the Centauri military to liberate the homeworld and then hunt down the Drakh. With help from the Alliance, Emperor Vir spent the next several decades rebuilding his homeworld to its former glory - without the need for conquest and imperial expansion.

Source: Babylon 5

NARN

Planet of Origin: Narn, originally a healthy green planet, dominated by primordial jungles and forests, teeming with animal life, craggy mountains and small, landlocked seas. One of the most revered locations on Narn is the G'Quon mountain range which was once home to the vicious On'Vik, herds of wild Dar and Natok horned beasts. The Centauri occupation of the 22nd century left it fairly barren, with a thin atmosphere and low humidity. The surface temperature can fluctuate by at least 60 degrees Fahrenheit on any given day. Very few areas of original forest and jungle remain. Although the Narn reclaimed much of their planet for agriculture, they managed to restore relatively small areas of forest and jungle. The second Centauri invasion of Narn caused massive climatic upheavals due to asteroid bombardment. The current state of the planet's already depleted biosphere after the bombardment is grim, with Narn's few remaining large animal species (such as the Val) endangered. Apparently only the avian species seem to be flourishing; and only heavy terraforming can return the planet to its former condition of lush forestland.

Narn are tall and stocky bald humanoids with high physical strenght and stamina. Their skin has a red-orange complexion, mottled with brown and/or green spots. Being sexuate marsupials; females give birth much like humans, but shortly after birth the  infant is placed into a pouch in the male, and they remain there until they are old enough to leave their father's pouch. As such, infant Narn are called "pouchlings".

Narn society  is strictly hierarchical and based on a class system. The Kha'Ri,  based in the city of G'Khamazad, consists of 8 circles, with the royal families being First, spiritual leaders Second, government officials Third, and trainees Eighth. The rest of the people are divided into Skilled Workers, Plebeians, or the Lost (unemployed, criminals, and the mentally ill). Upward movement between classes is difficult for the majority. Narn cities are built in roughly concentric districts which reflect the social hierarchy.

With several religions, the Narn are a deeply religious and socially conservative people. The holy Book of G'Quan is so revered that new copies must be hand written and identical in form to existing copies, including any imperfections in the pages, and rituals must be followed correctly or not done at all. It is also considered sacrilegious to translate the Book into another language. The Narn, like other races, also have winged beings of light in their myths (courtesy of Vorlon manipulation). These beings are similar to the angels of various human religions. A Shon'Kar is a Narn blood oath. The oath is sworn by a Narn against someone who wronged them or their family. An individual Narn is expected to not rest until the target of the Shon'Kar is dead. If the individual Narn fails, the family continues the Shon'Kar until the target is killed. Narn never draw weapons unless they mean to use them. If a K'tok, a Narn sword, is drawn, then blood must be spilled before it may be sheathed (even if that blood is one's own).

There were telepaths among the Narn population but during the first Shadow War (corresponding to Earth's 13th Century AD), the Shadows used one of Narn's southern continents as a base. They were driven from the planet by narn telepaths, but the telepaths were exterminated in the process.

In the early 22nd Century, the Centauri encountered the Narn and established relations with them. They saw the far more advanced interstellar visitors as demigods, and welcomed them with reverence. Realizing this, the Centauri quickly moved from being friends to enslaving the entire Narn population. The planet was mercilessly exploited for its natural resources - the forests and jungles were clearcut and most of the planet's land surface strip-mined. Entire animal and plant species were driven to extinction. The Narn themselves were used as servants or manual laborers by the Centauri, who often lived in large estates worked by Narn slaves; many Narn were deported to work camps on other worlds. The Narn began a lengthy guerilla war against their Centauri masters. They learned how to use Centauri technology and weapons, and turned these weapons against them, conducting hit-and-run attacks on Centauri bases, assassinated Centauri officials and civilians, and destroyed Centauri warships and equipment. The Centauri responded to these attacks in a ruthless manner; a hundred thousand Narn were executed as punishment for the Centauri losses, and cities were bombed to demoralize the population. But the Narn persevered, and eventually the Centauri wearied of the conflict and left, around the first third of the 23nd century. Thus Narn regained its independence. The leaders of the rebellion formed a new, united Narn government called the Kha'Ri.
At its greatest expansion, the Narn Regime, besides the Narn homeworld, also included a number of colonies and planetary systems such as Che, Zok, Dros, and Sigma 957. Narn territory also included vital border sectors with the Centauri such as Quadrants 14 and 24. These holdings made the Narn Regime a major power in the galaxy. However, this situation was not to last.

In 2259, unknown even to the Centauri Emperor, certain factions within the Centauri Republic had arranged for a small fleet of Shadows to destroy a Narn military base in Quadrant 37, killing 10,000 of Narn's finest warriors. The Narn were unable to discover who had destroyed the base, and a few months later another Shadow fleet attacked the Narn's largest colony at Quadrant 14, destroying its defences. This time a fleet of Centauri warships arrived after the Shadows to occupy and secure the planet. Over the next few months, the Narn steadily lost their defensive war with the Centauri.The Centauri fleet was able to bombard Narn from space using mass drivers illegally fitted to their battleships. The mass drivers rained huge meteors down onto the planet's surface, reducing most of Narn's cities to rubble, killing millions of Narn civilians, and effectively shattering the Narn's infrastructure and defensive abilities. As an act of simple survival, the Narn Regime agreed to an unconditional surrender to the Centauri, who then re-occupied the Narn homeworld with military forces and enslaved the Narn people once again. The leaders of the Narn Regime were arrested and/or executed, and Narn became a "protected colony" of the greater Centauri Republic. As a result of the Centauri bombardment, the Narn homeworld underwent major climate change, as dust blown into the atmosphere reduced the planet's sunlight, lowered the global temperature, and created near-constant windy conditions around the planet.  Due to the assistance of the Kha'Ri survivor G'Kar's in the assassination of Emperor Cartagia, a gesture which saved Centauri Prime from destruction at the end of the Vorlon, Narn was liberated early in 2261. The Centauri withdrew their occupational force from the Narn solar system and closest colonies.
After the formation of the Interstellar Alliance, the Minbari wanted to atone for their inaction during the early days of the Shadow War. They provided Narn with advanced technology to repair the damage done to its climate by the Centauri mass drivers.

In 2262 the Narn military became more numerous and active again, most notably in a joint strike with the Drazi against Centauri Prime in response to a series of attacks on Interstellar Alliance cargo vessels, but as much for revenge as anything else. Bombarding the Centauri homeworld with conventional weapons, they inflicted considerable damage to its urban areas and tens of thousands of fatalities - only a token repayment for the global carnage wrought by the Centauri upon them, but enough to humiliate the Centauri and help persuade their fleet to stand down without further reprisals.

FIRST ONES: XU-HA

Somme 2.5 millions years ago, The Xu-Ha were one of the most advanced and respected species in the galaxy. They had been one of the chief architects of their era's galactic peace and  they were beloved by many.

Transcendence drove the race mad. This madness was a slow cultural tide that took millennia to truly manifest but the signs were clear in retrospect. The Xu-Ha had failed as a Third Age race; without no transcended species to guide them, they were adrift.

For no apparent reason, the Xu-Ha began purging the galaxy of lesser races. Their actions were subtle, involving hidden machines that blasted out psychic pulses which only affected pre-Transcendence races. It took centuries for the increasingly isolated elder races to even notice that their lesser counterparts were dying off in droves, and it took even longer to discover the source. The elder races offered the Xu-Ha a chance to stop their campaign of genocide. The Xu-Ha refused this offer so the elder races acted as they saw fit.

The Xu-Ha were annihilated, their existence wiped from the galaxy.

Source: Babylon 5 universe,  Darkness & Light: The Vorlon & Shadow Fact Book, Mongoose Publishing

MINBARI

Planet of Origin: Minbar, the seventh  planet orbiting Chi Draconis — a binary star system just over 25 light years from Earth. It has two moons. Its day is shorter than Earth's, at 20 hours and 47 minutes, and its year is about 1.5 Earth years. Its atmosphere is oxygen/nitrogen with larger polar caps than Earth; the northern cap covers 23% of the planet's surface and, on the whole, Minbar's climate is colder than that of Earth. The planet is noted for vast crystalline structures; many cities are carved directly from crystal. The population of the planet is about 4 billion, and the capital city is located at Yedor.

The Minbari are a humanoids species that developed an advenced space faring civilisation. Their space age began more than a thousand years before the humans's.

Minabi are sexuate and reproduce in a manner similar to that of humans, with sex organs placed similarly. They are bald with light-toned skin and a large external bone crest on the back of their heads which is in fact an extention of their skull which is not present ar birth but grows over time. Female Minbari have a smooth crest which tapers to a single point at the back of the head while males typically have headbones which taper to several points along the bone. The Minbari  live longer than humans, have high stamina and can sustain graver injuries and blood loss. A small percentage of the population are telepaths and as such are highly honored. Some male are known to have facial hair due to the input of human DNA more than a  thousand years ago in their gene pool which was brought by the minbari-human hybrid prophet Valen.

The Minbari society is structured around three quasi-ethnic castes. These castes are called Worker, Warrior, and Religious. Membership in a caste appears to be a hereditary matter - children of parents from one caste will usually follow their parents. If the parents are of different castes, the mother's caste takes precedence - any children belongs to the mother's caste. Sometimes Minbari who have a deep feeling for one caste - which they refer to as the calling of their heart - will join a different caste. The castes are not as limited as their titles would suggest, and to some degree try to be self-sufficient. For instance, all three castes maintain armed security forces. 

Based on Minbar, the Minbari Federation is the government of the Minbari worlds and colonies. The Federation is an oligarchy ruled by the Grey Council which is made up of nine individuals, Initially, it was divided equally between the three social classes, Warrior, Religious, and Worker but after the civil war that occrure in the late 23rd century, membership division was revised to comprise two Warriors, two Religious, and five Workers. This gave the long-overlooked Worker caste a majority voice. Members of the council are addressed by other Minbari with the honorific title "Satai".

The Minbari are a very religious people. Their belief is that the universe itself is sentient, and that the universe has the ability to break itself into many pieces and invests itself in every form of life. Consequently, every being is a projection of a part of the universal soul which uses individual sentient beings in a process of self-examination and a search for meaning. Minbari people believe in reincarnation. After an individual has died, its soul joins with all the other departed. The souls then all meld together becoming one. Then the souls are reborn into the next generation of Minbari. They stopped their genocidal war with the humans in the 23rd century upon realizing that "that Minbari souls were reborn in human bodies" as they had found as well as the fact that the Minbari have some human DNA. Since the Minbari find concept of killing fellow members of their species horrifically unacceptable, the sudden revelation that their young enemy had this unexpected link to themselves put them under the same consideration.

Their link to the humans came from Valen, a central figure in their religion. A "Minbari not born of Minbar". About AD 1260, a fortress suddenly appeared in Minbari space, on which resided Valen flanked by Vorlons, who then led the Minbari people against the Shadows. After the war, Valen helped restructure Minbari society, organizing the Grey Council to lead it. These nine individuals came from each of the three castes. This form of government remained stable for a thousand years until the next Shadow War. Valen knew the Shadows would return and wrote prophecies to warn the Minbari when the next war was starting. After these tasks were completed, Valen left Minbar; the remainder of his life and eventual fate is still a mystery, though it has since been kept a secret by the Grey Council that he did have a wife and children in self-imposed exile, most of whom returned to Minbari society in secret, had families of their own, and added human DNA to the Minbari gene pool. Minbari with human DNA are consequently called "children of Valen". 

Source: Babylon 5 universe

MARKAB

Planet of Origin: Markab, in the tau Pegasi system, 140 light years from Earth
The Markab are a generally reclusive humanoid species that had developed a space-faring theocratic civilisation with a few colonies as of the twenty-third century and were members of the League of Non-aligned worlds. There are two distinct species of Markab easly distinguishable by the set of the jaw (one having an extreme "overbite" on the lower jaw).
They are polytheistic and strive to uphold morality above all others. Their pantheon is believed to have been influenced, like many others, by the Vorlons. Some Markab rituals utilize psychotropics to allow the participants to lose all control of themselves so they can enter into a religious frenzy.
In the year 2259, a lethal virus destroyed the Markab civilization. A thousand years earlier, the same disease had first appeared on the island of Drafa on the Markab homeworld. As it was noted for its "excesses", It became widespread belief that upright, moral people would not be touched by it.It was believed that the disease ceased to exist at that time, since no one was left alive to spread it to the new arrivals. As the disease was associated with immorality, when it resurfaced, infected people lied about it and walked among the population although they were contaminated. Each new case was denied by the government and its carriers. Some Markab, wishing to avoid the Plague, chartered ships to other Markab colonies, taking the disease with them. Fearing everything, the Markab politicians forbid physicians to talk about Drafa or perform research on it. A cure was found too late but too late. Medical ships landed on the Markab homeworld to find the planetary population of two billion dead. Other ships landing on Markab colonies found similar results: an additional two to three million dead. Fires raged across the deserted worlds as other races rushed to loot and pillage what remained of the Markab civilization. There are rumors that the Vorlons destroyed the Markabs. The Markabs themselves felt they had lost favor with the gods.
Source: Babylon 5 universe, Voltayre's Encyclopeadia Xenobiologica.

THE WORM

The Worm is an extradimensional entity whose only physical manifestation on our plane is a strand of green light 9.2 million miles long and 22,000 miles wide that can travel light years in seconds.
Any being within 20 light years of its manifestation is affected by it. The presence of the Worm enhances every being's fear of the unknown and usually causes violent behaviour.
The only known contact with the Worm was at th Babylon 5 station in late January, 2260. It caused a significant amount of damage and loss of life, before it disappeared as it passed through the station.
Source: Babylon 5 universe (B5 novel #5, The Touch of Your Shadow, the Whisper of Your Name), Voltayre's Encyclopeadia Xenobiologica.

THRAKALLANS

Planet of Origin: Thrakalla, the second planet orbiting Sheliak (Beta Lyrae) a star 882 light years from Earth

Sentient methane-breathing insectoids whoc developed a space faring civilisation. Thrakallans evolved on the upper middle atmosphere of a gas giant, gradually developing civilization atop floating islands of nyan. Although living on a gas giant, the Thrakallans learned mine-fishing to procure metals from the creatures living on the heavy, mineral-rich layers below. Whether the Thrakallans developed spacefaring capabilities on their own is unknown. The most reliable sources indicate that the Thrakallans were contacted by a now-extinct race and it is from them that the Thrakallans acquired their small trading fleet. They are known for their shrewd business sense. Quite a few are also heads of extensive criminal organizations. They communicate in a series of chirps and whistles.
Source: Babylon 5: "Soul Hunter," "Born to the Purple," "Parliament of Dreams," "Survivors," B5 novel #4, Clark's Law. Voltayre’s Encyclopeadia Xenobiologica
Notes: The Sheliaks, seen in Star Trek The Next Generation also come from the Beta Lyrae system

GAIM

Planet of Origin: N'chak'fah
The Gaim are a sentient insectoids ruled by six hive-queens who dictate the behavior of the species and fought against each other for thousand of years. Their society is divided in a system of drones like warriors or workers. The Gaim never believed that anything existed outside of their home planet due to its thick atmosphere that prevented them from seeing the stars properly. The first contact they had with the outside was a Narn exploratory team that landed on their planet in the early 2240s and which they slaughtered. When a Narn assault fleet showed up to conquer the planet some times later, they met a similar. This was the first time in history that the Queens united. Realizing that they faced alien enemies as well as each other, the Queens began making contact with aliens in an effort to ensure their species' survival. The queens generated a new caste of workers, a diplomatic caste, able to interact with other species. They quickly joined the League of Non-Aligned Worlds to gain protection from the Narn. They started buying starship hulls and parts to build themselves a defensive fleet. The queens generated chemicals and biological goods to help purchase technology. Gaim require an environmental suit in order to function in an oxygen / nitrogen atmosphere and must use an electronic translator as their language is a series of clicks and chirps.
Source: J"Michael Strasczinsky, Babylon 5 universe

YOLU

Planet of Origin: Pa'ri

The Yolu are long lived isolationist humanoid species which has developed an highly advanced space faring civilisation some 3000 years ago. Their recorded history goes back 5000 years, and 4000 of those have been of stability. In the twenty-third century, they were members of the League of Non-Aligned Worlds and are later members of the Interstellar Alliance.
They are extremely devoted, yet religiously tolerant.All Yolu religions espouse different viewpoints on the expression and form of the Coo-tah, an energy field, they believe, created by all living things. The Yolu Government, called the Ingyo, is composed of 15 priests and priestesses that have attained a higher understanding of the Coo-tah. They also are famed for the Mutai, a mode of settlement of differences between two factions settled with the loss of one life instead of thousands.
Source: J'Michael Strasczinsky, Babylon 5 universe

LLORT

Planet of Origin: Vartas
The Llort are a humanoid species that developed into space faring technology as of the twenty-third century but due to constant infighting, have never established any off-world colonies. They were members of the League of Non-Aligned Worlds and later of the Interstellar Alliance. They are said to have packrat-like instinct for collecting things.
Source: J"Michael Strasczinsky, Babylon 5 universe

BRAKIRI

Planet of Origin: Brakus

Brakiri are a humanoid alien species which has developed interstellar flight technology in 2111 and has expanded into an interstellar civilisation as of the twenty-third century when they were members of the League of Non-Aligned Worlds and later, of the Interstellar Alliance.
Brakiri society is based on trade and economics, their governing body being a consortium of several mega companies but criminal syndicates are power that have very high influence on the Brakiri way of life. They have have a reputation amongst the other races of being pack rats and scavengers
The Brakiri are nocturnal and look remarkably like humans with enlarged foreheads, ridges above their eyes and a hairline positioned in the further back of their scalp. [edit]
During the Shadow War of the twenty-thrid century, they made an alliance with the Shadows, believing it would ensure their safety but the Shadows eventually turned and attacked them, proving the Shadows were on no one's side but their own. The Brakiri then joined the alliance dubbed the Army of Light, contributing much of their remaining resources to its cause.
One of the most notable cultural events in the Brakiri society is the religious celebration called "day of the dead". It happens every 200 years when a comet passes the Brakiri homesystem. Every Brakiri has to be on home soil, either on Brakus, one of the colonies or just a rent area. The Brakiri use this day to interact with dead people, mainly family members or friends but sometimes even enemies.
Brakiri's first contact exprerience was with mankind through Earth's radio waves travelling trhough space at the dawn of the third millenium.
Source: J’Michael Strasczinsky, Babylon 5 universe

SHADOW SERVANTS: DRAKH

The Drakh are stocky sentient reptilian bipeds with an heavy endo and exo-skeletal systems and thick dark grey scaly skin. They may have some kind of group mind as they can communicate with other Drakh over long distances.
The Drakh are dark servants for the race of First Ones known as the Shadows. Much like their masters, they have various agents working for them, and apply technology to mask their appearance. They use the same Phasing Technology as the Shadows to Phase in and out of the physical universe. It remains unknown if they developed a space faring civilisation of their own prior to their afiliation to the Shadows or if they were nurtured by them to their present state.
Speculative litterature postulates that after the Shadow War of the 23rd century and the departure of the Shadows, they'll be trying to take their role as interstellar pupetmasters.
Source: Babylon 5 universe

ABBAI

Planet of Origin: Ssumssha (Abba IV)
The Abbai are a reptilian humanoid species led by a matriarchal regime who have developed a space faring civilisation. In the twentieth century, they became members of the League of Non-Aligned Worlds and then of the Interstellar Alliance.
“The Abbai civilisation is over six thousand Earth Years old and is regarded as a model of tolerance and respect and has eradicated all poverty and inequity on their world. Although the Abbai are ruled by a single gender, this is simply a fact of Abbai biology that the females outnumber males five to one, though the males are in no way considered inferior and are able to participate in all areas of society, with the exception of the government itself. This arrangement seams to work as it has remained stable for over four millennia and most male seam more interested in pursuing artistic, scientific or academic professions over politics. The Abbai are a very technologically adept civilisation and have possessed the capability for interstellar travel for over eight hundred years. They however specialise in agriculture, medicine, communication systems and computer software. Though they are a peaceful race who do not believe in conquest or violent expansion, they are by no means total pacifists and are quite capable of defending themselves. Most of their weapons are designed around non-lethal but formidable reactive force. Their ships and planetary defences are capable of generating massive force shields, capable of withstanding most assaults. They are also proficient and electronic warfare, intercepting and jamming enemy communications. The bulk of the Abbai Matriarchate's defence strategy however lies in their good relations with other worlds and their numerous interplanetary alliances from which they can muster a defender in case of attack or if necessary hire other races as mercenaries… Religion is highly prized among the Abbai, as is tolerance and mutual respect. As such their sixteen distinct religious hold no rivalry towards one another. The most dominant belief system on Abba IV is Oulai, the worship of wind and water. Unlike most other races the Abbai to not worship divine being(s) but instead revere the natural elements (stone, sand, plants, mountains etc.) with the exception of Kolai; the worship of logic and knowledge.” (from the Babylon 5 Wikia)
Source: Babylon 5 universe, Babylon 5 Wikia

FIRST ONES / TRAVELLERS / WALKERS AT SIGMA 957

Planet of Origin: Sigma 957
The Walkers are amongst the oldest races in our galaxy. With an unending Thirst for knowledge and a desire to learn every aspect of the Universe, they ended up possessing more knowledge individually than entire species. They started out as a large thick skinned creatures with poor séances and high psychokinetic capacities. They never rudimentary developed tools as they could construct things physically with there mind. They resorted to technology for complex constructs such as computers or automated construction machines. They soon started exploring space and at the same time the other dimensions and soon became nomadic explorers. They first discovered Thirdspace, which they mapped out in secret, due tu the violent and chaotic nature of its natives, then, hyperspace, which lead the way to yet other dimensions. They evolved beyond the physical state over a million years ago.
In our galaxy, they’ve been known to deposit their informations in two massive uninhabited databases. One at Sigma 957 and another one that was destroyed by asteroid impact.
They usually travel inside huge Science lab made for research and interdimensionnal and interuniversal travel.
Source: Babylon 5 universe. Babylon Wars Sourcebook.

FIRST ONES / TORVALUS SPECULATORS

The Torvalus speculators are a species of Gamblers and tricksters resembling a meter tall transparent protozoan covered in scillia. Until they left for beyond the galactic rim, they devoted their long existences to endless and sometimes highly abstract bets, wagers and probability tests, most of the time implicating other species. As a result they have brought stealth technology to unequalled levels to give them free reign while observing others.
Source: Babylon 5 universe. Babylon Wars Sourcebook.