One of the Alpha quadrant's more humanoid species, the Bajorans are distinguishable from humans primarily by the appearance of their nose, which is both ridged and slightly more prominent. Female Bajorans have a relatively rapid gestation period of five months, which leads to a very fast vascularisation process.

The Bajoran culture is one of the longest-lived in the alpha quadrant; their civilisation flourished over half a million years ago and they first gained interstellar capacity over eight centuries ago. The dominant religion of the planet dates back some ten thousand years, and is centred around worship of the aliens living within the Bajoran Wormhole - the Bajorans refer to these entities as 'The Prophets' and to the wormhole as the 'Celestial Temple'.

More recently the Bajorans have not fared so well. The Cardassians invaded Bajor in 2328, driving much of the native population from the planet and enslaving the remainder. Bajoran culture suffered greatly during this period, with many living in squalid conditions. Despite this, the Bajorans maintained a small but aggressive resistance effort throughout the occupation and by 2369 the Cardassian government had become frustrated with the militaries inability to crush this movement. Weary of decades of terrorist activity, the Cardassians pulled out of Bajor in this year.

The Bajorans established a provisional government, and despite many difficulties they have been successful in overcoming their problems.


Externally, Betazoids are one of the most Humanoid species yet encountered; externally they are indistinguishable from Humans even at close range. All Betazoids are natural telepaths; most develop this ability in adolescence, but a few are born with their telepathic abilities already active. Unable to screen out the noise of other peoples minds, these individuals generally suffer mental problems of varying severity.

Betazoids can cross-breed with Humans, although this often affects the telepathic abilities of the offspring - most commonly the children of such a union develop empathic rather than telepathic abilities. All full Betazoids are unable to read the thoughts of Ferengi, Breen, Ullians or Dopterians, but some half Betazoids have been occasionally successful in sensing the emotions of some of these species.

Betazoid society is generally unremarkable, though they tend toward more formal and elaborate traditions and ceremonies than most cultures. Although there are no official gender-based restrictions in place within Betazoid society, there is a marked tendency towards promoting women toward positions of authority.


The Ferengi are a Humanoid species resident in the alpha quadrant of the galaxy. First contacted by the Federation in 2364, the Ferengi where found to follow the common Humanoid pattern - evidence that they share a common ancestry with the species which seeded many planets across the galaxy several billion years ago. The Ferengi tend to be approximately 165 cm tall, and their most distinctive feature is a set of very pronounced ears. These are among the most sensitive of any known species, as well as being one of the major Ferengi erogenous zones.

The current Ferengi culture dates back some ten thousand years - it was at this time that Gint came to power. The first of the Ferengi world leaders - called the Grand Nagus - Gint codified a set of two hundred and eighty five 'Rules of Acquisition', a code of honour by which all Ferengi males are expected to live. The rules of acquisition heavily emphasise the accumulation of personal wealth, although some rules relate to general ethics. All Ferengi males are expected to memorise the rules at an early age.

Although they are capable of building powerful warships, the Ferengi are not a major military power in the alpha quadrant and rarely become involved in open conflict except as arms suppliers - usually to both sides. Nevertheless, there have been several skirmishes between the Federation and the Ferengi - most notably in 2355 when a Ferengi vessel wrecked the USS Stargazer. Open contact was established when the USS Enterprise-D encountered a Ferengi Marauder class vessel which had stolen a power system from a Federation outpost. Since this time relations have remained generally cordial, although individual Ferengi have several times made raids on Federation vessels.


The planet Vulcan orbits a red giant star relatively close to the Sol system. The climate is generally harsh, with much of the surface consisting of large deserts or mountain ranges. Vulcan is considerably larger than Earth and has both a higher gravity and thinner atmosphere. This gives Vulcans considerably more inherent strength than Humans, especially when in the relatively oxygen-rich atmosphere most other humanoid species regard as standard. While externally similar to Humans, Vulcan anatomy differs radically; Vulcan blood is distinctly green in colour. It is pumped by a heart which occupies roughly the same location as the Human liver and is capable of beating at several hundred beats per minute. Vulcans have very sensitive ears, and their eyes have an inner eyelid which has evolved as a defence against the harsh Vulcan sun.

Perhaps the most interesting aspect of the Vulcan physiology is the brain. The Vulcan brain is in direct control of most of the bodily functions, acting as a control unit for many organs. Vulcans have learned to gain conscious control of many of these functions, allowing them to regulate their bodies to a high degree by simple willpower. When injured a Vulcan can go into a trance-like state, using this ability to concentrate all of his or her energy onto repairing the injury. Most Vulcans also have almost complete control of automatic responses such as generated by intense pain. The Vulcan immune system is highly developed and enables them to resist most known forms of infection or illness.

Of course the most famous aspect of the Vulcan brain is the inherent telepathic ability. Almost all Vulcans are natural touch-telepaths, though considerable training is required to utilise this ability fully. Stronger minds are capable of non-contact telepathy, usually over short distances and in a limited fashion; occasionally Vulcans have emerged whose telepathic abilities are far stronger than the norm. The rigorous mental training all Vulcans are given often allows such individuals to develop such abilities as emotional compulsion and psychic image projection.

Culturally one of the most fascinating species in the Alpha Quadrant, the Vulcans were once an extremely violent and emotive people who waged almost constant warfare on one another. As their level of technology improved, the Vulcans eventually reached a point where their violent nature threatened species extinction. In an effort to avoid this fate, a Vulcan named Surak developed a new philosophy; Surak maintained that the root cause of all the problems on Vulcan lay in the uncontrolled outpouring of the peoples emotions. His followers swore to live their lives by an ethical system devised devised by Surak and based purely on logical principles. All expression of emotions was completely forbidden, negative or otherwise. Although this new philosophy spread rapidly across Vulcan, a minority rejected Surak's ideals. However, it was obvious that open warfare between the two factions would result in the very destruction that Surak predicted. Those who rejected Surak therefore chose to leave Vulcan and found colonies elsewhere. Most of these settled on the planets of the Romulan system, eventually founding the Romulan Empire.

The first of the current powers to discover warp drive, the Vulcans conducted a series of survey missions in the mid 2000's. First Contact between Vulcans and Humans came in 2063 when a Vulcan survey ship detected the warp flight of Zephram Cochrane. The Vulcans met with Cochrane at his launch site on the day following the flight, and a strong relationship was quickly built up between the two species. When the Humans entered into war with the Romulan Empire the Vulcans declared themselves neutral because of their pacifist principles. Once the war was over the Vulcans proposed that a solid alliance be formed between themselves and the Humans in order to deter future aggression and so avoid further conflict. This United Federation of Planets was agreed in 2161, with Vulcan and Earth as the founding members.


Trills are one of the very few joined species known in the alpha quadrant. Two separate intelligent species have evolved on the Trill home world - the hosts are a humanoid species who have two distinct races. The first, or alpha race, comprises approximately 10% of the Trill population; they are distinguishable by their pronounced foreheads, but in most respects their physiology is similar to that of the beta race who comprise the remaining 90% of the population. These are easily identifiable by a pattern of skin markings which extend from the forehead down the side of the face and all the way down the body. These spots move and change gradually over time, although they remain in the same region of the body. Both of these races are known as the Trill Hosts.

The second species is known as the Symbionts. These are relatively small, slug-like creatures who live underwater for most of their life. The Symbionts are extremely long lived and very intelligent, but lack any kind of limbs or tool-using ability.

Some thousands of years ago the Trill began living as a joined species - the Hosts developed the ability to physically join with the Symbionts, linking their nervous systems together. The effects of this are different between the two races of Host; with the alphas the Symbionts totally submerges the Hosts personality upon joining, essentially using the body as a home for its own mind. Alphas tend to be less physically robust than betas; for example, many alphas are extremely sensitive to the energy processes involved in transporters, and using this technology would cause fatal damage to the Symbiont. For this reason betas are the preferred recipients in the joining.

Betas also have some difficulties due to the joining process. Betas become physically dependant on the Host within 93 hours of the joining; after this period, removing the Symbiont is fatal to the Host. After a joining the mind of a beta is not submerged by the Host; the two separate minds merge, forming a new personality who is a combination of both the Host and Symbiont. This can cause severe psychological problems if the two minds are incompatible, resulting in rejection of the Host after only a few days - a rejection which often causes the death of the Host. Only one in every few thousand Hosts are suitable to be joined, and these must go through an exhaustive series of tests and training in order to qualify.

After the death of the Hosts the Symbiont is removed and placed into a new Host, carrying into the new joining all the personality and memories of the old. Many Symbionts have lived in this manner for centuries, accumulating experiences from many different lifetimes.


One of the major powers of the beta quadrant, the Klingon species originated from the planet Qo'noS (pronounced kronos), a class M world. The Klingon Empire was founded approximately 1,500 years ago by Kahless the Unforgettable, who performed many heroic feats including the unification of the Klingon people when he killed the tyrant Molor.

When the Klingons first made contact with the Federation they appeared almost totally humanoid. By 2271 most Klingons had acquired a single pronounced ridge of bone running laterally back across the skull; and by the 2290's all Klingons had a distinctive set of ridges. occupying almost the whole frontal area of their heads. At first it was believed that some form of genetic engineering or viral mutation was responsible for this species-wide change, but historical evidence indicates that the Klingons had this appearance throughout most of their history, becoming humanoid sometime prior to 2218 and then gradually reverting back to their normal appearance. The Klingons have consistently refused to provide any explanation for this transformation, simply stating that it is "a long story" that they "do not discuss with outsiders".

On average Klingons are larger and physically stronger than Humans. Many of their internal organs have redundant backups, allowing them to survive considerable injuries. Klingons are noted for having no tear ducts, and while most have red blood there are some races whose blood is distinctly pink. All Klingons suffer from certain allergies, most notably a strong reaction to small furry animals such as cats and tribbles.

By nature Klingons are a warrior race, and have been involved in many conquests throughout their history. Their first contact with the Federation in 2218 was disastrous, and led to nearly a century of hostilities. Open warfare was was narrowly averted in 2266 by the intervention of the Organians. Over the next twenty five years the Federation and Klingon Empire made several attempts to coexist peacefully, with notable breakthroughs including the Korvat Negotiations in 2289 and the Khitomer Conference in 2293. Peace was finally achieved after the Narendra Incident, in which the crew of the Enterprise-C sacrificed themselves and their vessel to assist a Klingon colony under attack by Romulans. The peace held until 2372, when the Federations refusal to support the Klingons war against the Cardassians resulted in an attack on Deep Space Nine. The alliance was re-instated later in this year in order to present a united front against the Dominion threat. That alliance has continued to the present, and the two powers are currently engaged in joint operations against the Dominion.

In theory the Klingon Government consists of an Imperial structure with a High Council advising the Emperor. However, for centuries the title of Emperor was left vacant and the Chancellor of the High Council has ruled the Empire. This situation was modified in 2369 when Kahless apparently returned from the dead, although it was later learned that the returned Kahless was in fact a clone of the original created by Klingon scientists. Despite this, Chancellor Gowron allowed the cloned Kahless to take the imperial throne as a figurehead in order to promote unity among the Klingon people.


Physically, Romulans are almost identical to their cousins the Vulcans. Externally most Romulans differ from Vulcans in having prominent ridges of bone on their forheads, a trait which evolved after their departure from Vulcan in c. 369. However, the Romulans lack the rigorous mental disciplines developed by the followers of Surak and this, combined with the more benign environmental conditions on Romulus, has greatly limited the physical capabilities of Romulans compared to their ancestors.

Like the Vulcans the Romulans have surrendered unrestrained violence as a way of life. However, in the case of the Romulans this has been replaced with a controlled deviousness; as a species the Romulans are generally thought of as duplicitous, a reputation the actions of their government over the last decade has reinforced. Their reluctance to rely on overt hostility generally leads the Romulans to play a waiting game, attempting to manipulate an opponent into breaking - or appearing to break - an agreement so as to give them a solid justification for striking.

Once the planet Romulus was colonised, the Romulans rapidly spread to their systems second habitable planet, Remus. From their they founded an interstellar empire spanning dozens of worlds. In the 2150's this empire came into contact with the rapidly expanding Human sphere of influence, and a brief but intense war resulted. This war was fought entirely in space, without any kind of personal or visual interaction between the two sides; no Human or Vulcan saw a Romulan until 2266, long after the war was ended, when a Romulan warbird penetrated the Neutral Zone to test Federation defences. Although the ship was destroyed by the USS Enterprise, this action marked a long period of 'cold war' between the two powers. Eventually this culminated in the Tomed Incident of 2311, when thousands of Federation lives where lost ot the Romulans. The incident led to the Treaty of Algeron, which forbade the Federation from developing cloaking technology and reaffirmed the existence of the Neutral Zone between the two powers. Subsequent to this the Romulans cut off all contact with the Federation.

Although the Starship USS Enterprise-C engaged several Romulan vessels attacking the khitomer outpost in 2344, in general the Romulans maintained their isolation until 2364. At this point a Romulan warbird entered Federation space to investigate the loss of several of their border outposts. While it was never discovered why the border outposts were attacked, the Romulans announced at this time that they would again take a more active role in international relations. They acted in opposition to the Federation for some years after this.