OVIONS

Ovions are a four-armed bipedal man-sized insectoid species that were members of the Cylon Alliance to whow Their tylium mines were an extremely valuable asset.  They manage a Gambling ans entertainment complex on the surface of their homeworld to attract preys. Individual humans are trapped selectively and taken into the hive-like structures underground  to be placed into chambers which slowly transform them into food. Ovions occasionally prowl discreetly on the entertainment level, but generally remain out of sight. 

They are now presumably extinct since their world was destroyed in the explosion of their tylium mines.

Source: Battlestar Galactica Universe  (Saga of a Star World). 

AQUANS

Planet of Origin: Argo,  a seismically-unstable planet. Once a land planet, but its surface became almost completely covered by water, following a series of violent seismic disturbances, leaving only a single large landmass, with a few associated outcroppings.

The Aquan are an humanoid species which developed an advanced planetbound civilisation. They are good example of forced evolution as originally air-breathers were they mutated themselves to become able to breath underwater after massive planet-wide earthquakes flooded the entire planet.

They are governed by the Ruling tribunal of the Anquans and follow the Aquan Ordainment, an ancient set of rules.

Source: Star Trek Universe,  (TAS: "The Ambergris Element") 

SHANSHEETH

The Shansheeth are species of avian bipeds. Two meters tall, they have hunched shoulders with a long neck protruding from the middle section of their body and a vulture like head. They have five digits clawed hands and feet. Apart of their head, neck, feet and hands, most of their body is covered in feathers. They are able to project energy beams from their hands and like wearing robes and jewels.

A peaceful advanced space faring civilisation led by a political enitiy known as the Wide Wing of the High Shansheeth Nest, they have been known amongst the interstellar community as galactic undertakers, journeying through space in tribal groups to return lost heroes to their kin. .They employ shards of black stones called epitaph sotnes which they use to project hologrphic images to communicate with other species and  have also been known to use devieces called memory weaves to extracting memories and turning them into physical objects.

 Source: Doctor Who Universe (SJA: Death of the Doctor) 

QETESH

The Qetesh is a species that developed an advanced civilisation capable of star travel. They feed off powerfukl emotions such as excitement in people's lives, draining their life essence with it and are therefore masters of emotional manipulation ot achieve sustainance. They are also known as "soul-stealers".

Their stomachs existed outside their bodies, and they did not need air to breathe. The mobile part of their body has been known to look human, but they are most proabably albe to make it match the appearance of their prey's nature to better manipulate them into generating emotionnal food.

Source: Doctor Who Universe (SJA: Goodbye, Sarah Jane Smith)

FLESHKIND

Planet of Origin: Fleshking planet, part of a binary planetary system (the other planet being the Metalkind planet) in the eye of the Tornado Nebula.

The Fleshkind is a carbon-based humanoid species that developed an advanced civilisation and possesses interstellar-range teleportation technology as well as advanced genetic engineering. 

They are externally almost undistinguishable from humans but can shoot energetic discharges from their hands to place others in a trance. Given the fact that they have been known to develop living weapons of high destructive power, this ability might have been engineered.

The Fleshlkind was at war with a Metalkind race that lived on the twin planet of their homeworld after they started mining operations to mine precious ore on  the Metalkind planet; ore which was in fact the the Metalkind's children. Discovering this fact, the Fleshkind started using the so-captured Metalkind as slaves, which lead to the war.

Th war had come to a stalemate as of the beginning of the 21st century when the Flehskind developed a living weapon capable to destroying all the Metalkind but the weapon was lost, possibly restoring the stalemate.

Source: Doctor Who Universe (SJA: Sky)

METALKIND

Planet of Origin: Metalking planet, part of a binary planetary system (the other planet being the Fleshkind planet) in the eye of the Tornado Nebula.

The Metalkind is a species of sentient  humanoid bio-metalloid  boron-based lifeforms. The Metalkind was at war with a Fleshkind race that lived on the twin planet of their homeworld after they started mining operations to mine precious ore on  the Metalkind planet; ore which was in fact the the Metalkind's children - which were then used as slaves by the Flehskind, leading to the war.

This leads to believe that the Fleshkind was originally more technologically advanced than the Metalkind, being the first one to venture on the other's planet and starting its exploitation. As of the 21st century, after hubndreds of years of war, both species possessed weapons that enabled some kind of stalemate bwetween them, as well as interstellar-range teleportation technology - which might have been the initial way the Fleshkind made it to the Matlakind planet.

To end the stalemate, the Fleshkind had developed a  living weapon that could destroy the Metalkind but the weapon was lost, possibly restoring the stalemate.

Source: Doctor Who Universe, (SJA: Sky)

VENDORIANS

Planet of Origin: Vendor (Vendoria)

An advanced cephalopodic sentient, tentacled shape-shifting species.  In their natural form, Vendorians look rather like floating orange lamps adorned with six trailing tentacles. They had great agility and grace, and reflexes superior to those of a human.

Because of their ability to rearrange their cellular structures at will, thus taking on the shapes of various humanoid species,they are looked upon them with suspicion by other species. While Vendorians may assume many shapes and identities, the longer they remain in one form the more characteristics of that form they assume as  they can absorb memories and personality traits of an individual through touch. These memories and traits become more ingrained the longer or more frequently the Vendorian assumes the form; if maintained long enough, the absorbed traits eventually become part of the Vendorian's own personality. 

In the 23rd century, due to their practice of deciet as a way of life , they have been judged psychologically unfit for the interstellar communicty. Their planet has been quarantined to avoid them inflitrating other worlds and spreading chaos.

Source: Star Trek Universe ("The Survivor")

URSINOIDS

The Ursinoids are a sentient bear-like humanoids species which had devleoped spare faring as of the 23rd century. They have large fangs and were completely covered in fur. 

Note: They are reminsicent of the Bulrathi of  Masters of Orion

Source: Star Trek Universe ((TAS: "Mudd's Passion"))

TRAVIST POLONGS / POLONGANS

Planet of Origin: Polongus

Travist Polong are a species of small, sentient slug-like, multi-eyed beings. Some are known to have come to Earth at some point in the early 2010ies.

Source: Doctor Who Universe . (SJA: The Wedding of Sarah Jane Smith)  (SJA: The Mark of the Berserker)

GORGON

Planet of Origin: Gorgos ((100,000,000 light years from Earth)

The Gorgons were a species of intelligent parasitic beings which possessed their hosts. Non corporeal, individuals look like a group of blue ethereal serpentine forms hovering in the air. They had some psychic powers, specifically mind control and the ability to petrify creatures within a matter of hours. In order to do so, it needs to leave its host and make contact with the target. They can be reflected by a mirror, causing them to return to the host and turning it to stone. While in the host, they greatly increased its lifespan, letting one human host live for over 200 years. This was much less than the Gorgon's natural lifespan of thousands of years, which meant they had to frequently switch hosts.

Three Gorgons came to Earth around 1000 BC via a talisman, entering into Greek mythology along the way. One Gorgon was slain by a Greek hero, another by a professor and his wife in 1959, and one survived up til 2010. This Gorgon eventually inhabited the body of an abbess and led the sisterhood of nuns at St. Agnes Abbey, manipulating their minds to serve it for over 200 years. The Gorgon led the nuns on a mission to retrieve the talisman so as to call the Gorgons from their home world to invade Earth and take all of humanity for their hosts.

Source: Doctor Who Universe (SJA: Eye of the Gorgon)

EKNODINE

The Eknodine are a symbiotic sentient alien species that can live inside of specimens of other species, extending their lifespan. As a defense mechanicsm, they can extend a green eyestalk from their hosts' mouth, which can spray a green cloud which turn a human-size hostile into dust.
Note: There are similarities between this species and the Goa_Uld. and the Hive/Ganglion.
Source: Doctor Who Universe (DW: Amy's Choice)

TENZA

The Tenza is a species whose young were raised by other species. To that end, they possessed advanced, though subconscious, psychic powers, allowing them to live among the alien culture in which they were being raised. They born in space, where they drift until they found a habitable world. There, they find a family to live with, then infiltrate it. The Tenza infant would adapt itself to suit its environment and alter the memories of its surrogate parents and those around them. After that, the Tenza would live out its life as a member of the surrogate parents' species without conscious realization of its true nature.  If the Tenza felt threatened, its telepathic abilities played havoc with its environment to keep it safe.  They used a perception filter to remove inconsistencies in their histories. Their telepathic abilities are known to be able to scan space over distances of millions of light years.

Source: Doctor Who Universe (DW: Night Terrors)

BAJORANS / PROPHETS / PAH WRAITHS

Planet of Origin: Bajor, the 7th planet orbiting the star Bajor-B'hava'el, an earth type planet with five moons. A Day on Bajor has 26 hours. Bajor's atmosphere has a greenish tint; as a result, oceans viewed from space will appear more green than blue.

The Bajorans are a pacific  humanoid species who developed advanced civilisation about 500 000 years ago and started space faring in the 16th century. They were invaded in 2328 by the Cardassian Union, with who they had aligned themselves some time before. They were occupied for 40 years, during which time many Bajorans were forced into slave labor. Many fled and hid in refugee camps while other got involved in the terrorist resistance movement. In 2369, the Cardassian civilian authorities ordered the military to withdraw from Bajor, after which the Bajoran provisional government invited the United Federation of Planets to set up base in the system and requested membership into the Federation. Soon after, a stable wormhole was discovered in the system, making it a strategic position on the galacitc scale and a key entry point for the Dominion, an invasive civilisation lying at the other end of the Wormhole. Bajor finally formally joined the Federation in 2376, the year after the Dominion War ended.

The Bajoran people were originally divided into castes, called d'jaras. When the Occupation began, the d'jara system was abolished.

The Bajoran religion, known as the Way of the Prophets, is the major unifying force on the planet. Its religious figures are entities refered to as The Prophets, or "Wormhole Aliens" which, also they claim to be of Bajor, exist within the system's wormhole, referred to as the Celestial Temple by the Bajoran people. Their motives remain unclear; on several occasions they proclaim their disinterest in the physical world, while at other times actively participate in the physical world, most often in the general interest of Bajor and its people. People who followed the will of the Prophets are said to be permitted to enter the Celestial Temple and dwell with the Prophets upon their death. The Prophets are also believed to have given Bajor its main religious artifcacts, were discovered 10 000 years ago, the "Tears of the Prophets", crystalline, hour-glass shaped orbs , glowing and  floating within their containers and have powers defying scientific explanations, the most common being to stimulate visions that are beleived to communications from the Prophets. Some prophets, known as Pah Wraiths, are said to have been imprisoned by their kin on Bajor in a physical prsion known as the Caves of Fire for having tried to seiz control of the Celestial Temple in the past.

Source: Star Trek Universe

ASGARD

Planet of Origin: Unknown, in the galaxy of Ida
The Asgard are diminutive humanoid species which developed a benevolent highly advanced space-faring civilisation governed by a Hihg Council.  They were once part of an alliance of four great races with the Ancients, Nox, and Furlings and visited Earth during antiquity and protected a number of planets in the Milky Way, mianly from the Goa'uld with whom they signed The Protected Planets Treaty is an armistice between the Goa'uld and the Asgard, first referred to specifically in "Fair Game" when Earth is included. The treaty covers 27 planets including Earth,^[6] and ensures that those planets remain free from Goa'uld domination. Other planets in the treaty include Cimmeria,^[1] K'Tau,^[11] PX3-595,^[13] the second planet of the Adara system,^[3] and Galar.^[14] . As of the 20th century, the Asgard are a dying race. Having lost the capacity for sexual reproduction, they perpetuate themselves by transferring their minds into successive cloned bodies, leading to an irreversible degeneration of their genome. They chose to commit mass suicide in the beginning of the 21st century, having arrived at the end of their degenerative cycle, by exploding thri homeworld to prevent that their knowledge fell into the wrong hands.
A renegade faction of Asgard splintered from the others 10,000 years ago over their belief that they should experiment on humans to solve their cloning problems. They traveled to the Pegasus galaxy and continued their experiments, but were forced into hiding after the Wraith defeated the Ancients. 
Amongst the most significant technological advancements of the Asgard are beaming technology, intergalactic hyperdrives, advanced shiled technology and plasma beam weapons. They are very advanced in cloning techniques and have the technology to upload and store consciousnesses and transfer them to new bodies. Neutronium is a key element of Asgard technology. Source: Stargate Universe

AMNION

Amnion is an adavnced space-faring vaguely humanoid species which looks like " "a humanoid sea-anemone with too many arms." They differ greatly in appearance from one another, with differing numbers of limbs, eyes, and other organs, as well as  in size and shape. While being physically very different, they share a hive mind with the major instinctive drive of the expansion and propagation of the Amnion species, leading them to assmiliate other species by turning them into members of their own.

They possess  mutagenic technology that gives them the ability to rewrite the DNA of a non-Amnioni to turn him into an at least partially Amnion. Basic life processes remain intact, but protein and DNA structure are radically different. The new mutants can breed with each other (though not with mutated members of other species) and display a significantly increased level of intelligence.

First contact was made betwwen them and humanity while humanity was already travelling interstellar journeys.
Source: Stephen R. Donaldson's The Gap Cycle

GREATEST AMERICAN HERO ALIENS

Planet of Origin: Unknown, formerly a garden planet, now a wasteland. Its name is unpronouncable by humans.

The alien seen in The Greatest American Hero is from a green skinned humanoid species that developed an advanced technological civilisation. They had use of spacecrafts, teleportation and suits enabling their wearer to use flight, super strength, resistance to injury (including direct bullet hits to areas covered by the suit), invisibility, precognition, telekinesis, x-ray vision, super speed, pyrokinesis, holographic vision, shrinking, psychometry, and sensitivity to the supernatural.

According to the alien, his planet (which now looks remarkably like Mars) used to be a garden planet but is now a wasteland. He is therefore, as of 1983, among its rare survivors. He came to Earth to give a human one of their suits with which he hopes humanity will be saved.

Possibly coming from the same planet as him is a small creature floating in the air which ressembles a small snake with a torso, two arms a vaguely humanoid head on which is a long articulated antenna.
Source: The Greatest American Hero Tv show, ABC, 1981-1983

GAMILAS

Gamilas are a hibe-minded bipedal species which developed an advanced space faring civilisation.Knowning their planet doomed, they tried to invade Earth around 2199 and eradicate humankind. This decision caused a split of the hive personnality, one portion of it being against destroying another species. It sent technological information to Earth that would allow the humans to defend themselves. The Gamilas were eradicated.

Source: Space Battleship Yamato live action.

SLENDERS

Slenders are a species of tall circa 4 meters tall grey humanoids who developed an advanced space faring civilisation. They are an intrusive species, harnessing other species such as  skitters  and humans to control them and armed Mech drones to ensure their security. Graceful and slender, they can move very quickly in an Earht type gravity and appear to have features ressembling cetacean mammals. They are the apparent power behind the invasion of Earth. 

Source: Falling Skies

IXTL

Planet of Origin: Unknown but presumably destroyed for a long time.
Ixtls are a very ancient sentient species, thought to be extinct, although some specimen could still be floating in the emptiness of space in a state of suspended animation. They are red colored, with four legs and four arms ending in eight fingers. Their cylindrical body is virtually immortal and they have in full control of its  molecular structure, enabling them to survive unprotected in space for eaons in suspended animation and allowing them to withstand very high energetic discharges. To reproduce, Ixtl need what they call a Guul, i.e.living hosts in which it deposits their eggs. The eggs need only a few hours to hatch and then feed their living host.
Source: A.E. Van Vogh, The voyage of the Space Beagle

ASGARDIANS

Planet of Origin: Unknown but their current place of residence is Asgard, a place situated in a wormhole network (of which Earth is part) englobing 9 worlds. Asgardians have developed the Bifrost technology enabling them to teleport themselves instantaneously to any of the 9 worlds using the subspace network of the wormhole.

Asgardians are a highly advanced humanoid species. Earth'sNorsemen and Germanic tribes used to worship the Asgardians nearly a millennium ago. Even though certain Gods are still interested in humanity such as Thor, the Asgardians do not have any more active worshippers or seek to have any. Asgardian flesh and bone is about three times denser than similar human tissue, contributing to the Asgardians superhuman strength and weight. An average male god can lift up to 30 tons while an average female can lift up to 25 tons, but there are those that exceed these specifications. They  are also gifted with extremely long life, but are not immortal. They are also immune to all terrestrial diseases and are highly resistant to conventional forms of injury. The metabolism of the Asgardians gives them superhuman endurance in all physical activities. Their close genetic and morphologic resemblance with humans leads to believe that those two species, along with the other ones of the the 9 realms could be of a same origin.

Asgardians residing on theworld of Vanaheim are refered to as Vanir while the ones residing in Asgard itself are refered to as Aesir.

The other species of the 9 realms are:

• The Dwarves: Dwarves are small and stocky with an average height of 4 feet. Dwarves live in Nidavellir and maintain peaceful relations with the Gods. They tend to be either craftsmen or farmers and have created weapons for use by the Gods such as Mjolnir and the spear, Gungnir.
  
  
• The Elves: The two types of elves that inhabit the land are the Light Elves and the Dark Elves. The Light Elves live in Alfheim while the Dark Elves live underground in Svartalfheim. Both species are similar in the respect that their body types can differ greatly in size anywhere from 4 feet to 8 feet, and have proportionally long limbs. Light Elves have lighter skin tones while Dark Elves are darker.
  
  
• The Demons lives in the realm of Muspelheim. Demons are similar in size to the Gods, but are engulfed in fire. They tend to be nomads but will travel into other dimensions for the purpose of war. All Demons are the offspring of the fire demon who is said to be older than asgaridn culture, Surtur.
  
  
• The Giants: the Giants live on Jotunheim. They are also humanoid, but are more Neanderthal-like in body structure. They are the traditional enemies of the asgardians with whom they fought a millenia-long war that ended in 965 after they tried to settle on Earth. They were repelled to their homeworld, which was devastated and left without means to travel using the Bifrost network. Most stand up to 20 feet tall, but some can reach 30 feet. Giants usually lead a hunter/gatherer type of life, but will war with the asgardians on occasion because they are jealous of their superior abilities. The first of the Giants was the Ice Giant, Ymir, who existed before any of the Asgardians. Many different races of Giants arose in Jotunheim, including the Ice, Mountain, Rime, Storm, and Frost Giants. The Frost Giants are the direct descendants of Ymir. The Giant Laufey was another monarch who lost the war  against the Asgardians; In tribute to Laufey's courage and to try to seal a peace treaty with tthe giants, the asgardian king Odin adopted the giant's infant son Loki. Two other giants of note were Fafnir II and Fasolt (both deceased), who built Odin's palace in Valhalla in exchange for a Goddess, and battled over a magic ring and treasure that was given for the Goddess being released. Giants have also been known to reproduce half-breeds that look like asgardians.
  
  
• The Trolls: Trolls are massive creatures covered in hair with an orange skin tone. They average in at 7 feet, and they live in settlements scattered throughout the land. The trolls are incredibly strong, surpassing the strength of the asgardians, and puts them on similar ground with the Giants.Thor. Trolls usually work as miners and metal workers.

Sources: Thor movie, Marvel Universe, More on Marvel.com: http://marvel.com/universe/Asgardians#ixzz1S2qPajjt