Alien Races

Achernonians
Origin Galaxy: Milky Way
Star System: Alpha Unakalhai
Planet: Achernon, fourth planet from sun
Estimated population: 81 million
Physical type: humanoid
Eyes: two
Fingers: five (with opposing thumb)
Toes: two (sharp talons)
Skin color: purple-gray (some body hair)
Average height: 6' 4"
Special adaptions: some Achernonians possess the ability to become immaterial at will
Type of government: Achernonians do not possess their own means of star travel as yet.   Their technology level is pre-industrial
Names of representatives: Brahl
Note: The Achernonian named Brahl was one of the aides of the Earth cyborg Korvac
1st appearance: Thor Annual #6

Centurii
Origin Galaxy: Milky Way
Star System: Prosima Centauri
Planet: Centauri-Six, sixth from sun
Estimated population: 400,000 before its conquest
Physical type: humanoid
Eyes: two
Fingers: five with opposable thumb
Toes: five
Skin color: light yellow
Hair: yellow
Average height: 5' 6"
Special adaptions: none
Type of government: worldwide democracy
Level of technology: comparable to Earth. No interstellar travel and little weaponry
Names of representatives: Gormok
Note: The pirate starship Bird of Prey, commanded by the Grey Gargoyle, conquered Centuri-Six, and sold the population into slavery throughout the galaxy.  Few Centurii still live on their native planet.
1st appearance: Thor #258

Deonists
Origin galaxy: Milky Way
Star system: Debebola (Earth designation)
Planet: Deo, "The Doomsday Star," formerly known as "Templeworld," fifth from sun
Estimated population: 200
Physical type: humanoid
Eyes: two
Fingers: five (with opposable thumb)
Toes: five
Skin color: pale white
Average height: 5' 8"
Type of government: Theocracy
Level of technology: Highly advanced, but no new strides have been made in centuries
Names of representatives: K'rll, N'gll (two of the "Soul-Survivors")
Note: Deo was once the religious center of a confederation of planets, the rest of whose civilizations were destroyed by a space armada of alien warships.  "The One Above All," then providing the planet with energy, exhausted himself and died in creating a wall over the world.  Since then, the Deonists have captured other "gods" for use as energy.
1st appearance: Thor #261

Ergons
Origin galaxy: Milky Way
Star system: M Canum Venaticorum (Earth designation)
Planet: Ergonar, second from sun
Estimated population: 2.4 billion
Physical type: humanoid
Eyes: two
Fingers: five with opposable thumb
Toes: five
Skin color: red
Average height: 6' 2"
Special adaptions: superhuman strength, in part to combat heavy gravity
Type of government: Variety of governments planetwide, primarily military dictatorships
Level of technology: Intermediate level interstellar capacity.  Technology otherwise comparable to Earth's
Names of representatives: Sklarr
Note: Sklarr was the captain of the pirate starship Bird of Prey until he was defeated by the Grey Gargoyle. Ergons have never been to Earth
1st appearance: Thor #259

Fomalhauti
Origin galaxy: Milky Way
Star System: Fomalhaut (Earth designation)
Planet: Pumor, sixth from sun
Estimated population: 7.8 billion
Physical type: amoeboid
Eyes: one, red or yellow
Toes: none
Skin color: inapplicable
Average height: 2' 5" (except mutants)
Special adaptions: Fomalhauti communicate telepathically, manipulate objects by forming tentacles.  Though they resemble giant amoeba, they are multi-cellular former chairman of the planet Governing council
1st appearance: Thor #258

Gramosians
Origin galaxy: Milky Way
Star system: Sekar
Planet: Gramos, third from sun
Estimated population: 1.3 billion
Physical type: humanoid
Eyes: two
Fingers: five with opposable thumb
Toes: five
Skin color: blue-black
Average height: 5' 11"
Special adaptions: can discharge energy through hands
Type of government: Elective monarchy
Level of technology: Highly advanced interstellar ships.  Machinery to store, transmit life force
Names of representatives: Mercurio ("The Fourth-Dimensional Man")
Note: Years ago, Gramos's magnetic polarity changed, admitting radiation from space which caused mass insanity and death. Normalcy was restored by the debris of Xorr the God-Jewel
1st appearance: Thor #208

Korbinites
Origin galaxy: "Burning galaxy"
Star system: unknown
Planet: Korbin (destroyed)
Population: unknown, in the millions
Physical type: semi-humanoid
Eyes: two
Fingers: four including opposable thumb
Toes: four
Skin color: light orange
Average height: 6' 2"
Special adaptions: none known
Type of government: imperial
Level of technology: Highly advanced, superior to Earth's, with warp-drive starships, genetic engineering, sentient computers
Nam of representatives: Beta Ray Bill
Note: The Korbinites once inhabited a peaceful empire of planets, most of which was destroyed in a galactic cataclysm caused by Surtur.  The Korbinites now live in a fleet of starships as they search for a new home planet.  Their guardians is Beta Ray Bill, who can magically transform from his normal body into a superhumanoid cyborg body bioengineered from that of a carnivorous beast
1st appearance: Thor #337

Kronans

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Levians
Origin galaxy: Milky Way
Star system: Nelweni
Planet: Levia (destroyed)
Estimated population: 5 million (all living aboard "world ship" Levianon
Physical type: humanoid
Eyes: two
Fingers: five with opposable thumb
Toes: five
Skin color: blue
Average height: 5' 9"
Special adaptions: none
Type of government: democratic republic led by "First Citizen"
Level of technology: Interstellar ships without warp-drive, highly advanced robots, labor saving technology
Names of representatives: Relstor (First Citizen of Levianon, Sharman, Cherise, Darnak
Note: After depleting their planet of magma and resources, the Levians sent a fraction of their population aboard a starship to survive their world's imminent destruction.   The survivors continued their wasteful ways and now live at a primitive level aboard their crippled, drifting ship
1st appearance: Thor #256

Procyonites
Origin galaxy: Milky Way
Star system: Procyon
Planet: Perratin, second from sun
Estimated population: 3.4 billion
Physical type: reptilian
Eyes: two, lidless
Fingers: four with opposable thumb
Toes: three
Skin color: brown shell, brown scales
Average height: 6' 5"
Special adaptions: large tortoise-like shell protecting most of body
Type of government: large tribal nations
Level of technology: unimpressive.  No space travel
Names of representatives: Tork
Note: Tork was among the minions of the Earth-born cyborg Korvac in the Thirtieth Century
1st appearance: Thor Annual #6

Reptoids
Origin galaxy: Milky Way
Star system: Kormuk
Planet: Tayp, second from sun
Estimated population: 3.5 billion
Physical type: reptilian
Eyes: two, black surrounded by red
Fingers: four with opposable thumb
Toes: four
Skin color: green, scaled, with yellow underside
Average height: 6' when standing erect
Special adaptions: Reptoids can stand erect or walk on all fours,  They have superhuman strength and can use their powerful tails as weapons
Type of government: tribal
Level of technology: Unimpressive, no interstellar travel
Names of representatives: Teju
Note: Teju was among the minions of the Earth-born cyborg Korvac
1st appearance: Thor Annual #6

Rhunians
Origin galaxy: unknown
Star system: Vulliger
Planet: Rhun, first from sun
Estimated population: 2.8 billion
Physical type: humanoid
Eyes: two
Fingers: five with opposable thumb
Toes: five
Skin color: pink
Average height: 300'
Special adaptions: To support their extraordinary mass, Rhunians psionically radiate anti-gravitons to resist the tremendous pull of gravity on their bodies
Type of government: oligarchy
Level of technology: Capable of deriving energy through destroying stars and other planets.  Interstellar ships with war drive
Names of representatives: Kragonn (High Lord), Dracus
Note: Rhun is one of the so-called "Black Stars," five planets equidistant from their sun.  Rhunian technology created immense space warps through which the entire system moved from one galaxy to another.  Although it was once within the Milky Way galaxy, it's present location is unknown
1st appearance: Thor #219

Rigellians
Origin galaxy: Milky Way
Star system: Rigel
Planet: Rigel-3, third from sun
Physical type: semi-humanoid
Eyes: two
Fingers: five
Toes: five
Skin color: pale yellow
Average height: 5'6"
Special adaptions: psionic abilities allowing a Rigellian to control another humanoid's mind, or to overpower another humanoid's muscular power.  Rigellians can also mentally alter their own physical density, thereby granting themselves greater strength
Type of government: technocratic empire with officials chosen for their high intelligence quotient
Level of technology:  advanced warp-drive starships, manipulation of subatomic particles, teleportation, robotics, ability to move planets via tractor beams and space warps
Names of representatives: Tana Nile, the Grand Commissioner, Sub-Commissioner, Ronhon, Wipo, Pogu
Note: The Rigellians, also known as the Colonizers, have established a vast empire of planets in the Milky Way, Andromeda Galaxy, and other nearby galaxies.  They no longer colonize the worlds inhabited by humanoids, nor do they challenge other interstellar empires (Kree, Shi'ar, Skrull)
1st appearance: Thor #129

Sssth
Origin galaxy: Milky Way
Star system: Sslirteep
Planet: Sszardil, second from sun
Physical type: reptilian/semi-humanoid
Eyes: two, red
Fingers: three with opposable thumb
Toes: three
Skin color: green
Average height: 8'
Special adaptions: none
Type of government: dictatorships
Level of technology: Moderately advanced warp-drive starships
Names of representatives: Sssthgar (a name meaning "ruler of Sssth)
Note: Sssthgar formed an alliance with Vrellnexians to enslave and sell intelligent beings from other worlds, using the conquered planet "Golden Star" as a base.   This alliance was destroyed by Thor, other Asgardians, and the rebelling people of "Golden Star"
1st appearance: Thor #212

Taurians
Origin galaxy: Milky Way
Star system: Jenzen
Planet: Taur (destroyed by Galactus)
Physical type: semi-humanoid
Eyes: two
Fingers: five (with opposable thumb)
Toes: three
Skin color: orange
Average height: 7'
Special adaptions: superhumanoid strength approaching Thor's, evolved in order to resist Taur's heavy gravitation.  Can survive for short periods in outer space outside ships
Type of government: democratic republics, now nonexistent
Level of technology: relatively primitive starships, otherwise undistinguished
Names of representatives: none known
1st appearance: Thor #160

Vrellnexians
Origin galaxy: Milky Way
Star system: Cetsin
Planet: Vrellnex, fifth from sun
Estimated population: 6.4 billion
Physical type: insectoid
Eyes: two, compound, red
Fingers: three with opposable thumbs on each of the foremost two pairs of limbs
Toes: three on each limb in the lower pair
Skin color: usually purple
Average height: 5' 5"
Special adaptions: Vrellnexians stand on their hindmost pair of limbs.  Vrellnexians differ widely in appearance.  Some of them war winged and can fly
Type of government: hivelike, dominated by "queens"
Level of technology: Moderately advanced, with warp-drive starships, capable of interdimensional travel
Note: Vrellnexians maintain some commercial trade and (captured alien) slave trade with other races.  They once happened upon Asgard and tried to place the Asgardians into bondage
1st appearance: Thor #212

Xartans
Origin galaxy: Fornax
Star system: Zugano
Planet: Xarta, fourth from sun
Estimated population: 4.3 million
Physical type: humanoid
Eyes: two, orange
Fingers: five with opposable thumb
Toes: five
Skin color: orange
Average height: 6' 9"
Special adaptions: Xartans are metamorphs who can transform into any other kind of living beings, taking on that being's physiology, and even any superhumanoid powers it has, in the process, Xartans can turn invisible and withstand the vacuum of space for brief periods
Type of government: military dictatorship
Level of technology: moderately advanced, with warp-drive starships
Names of representatives: Ugarth, Zano
Note: On Earth, Xartans are colloquially called "Carbon Copy Men"
1st appearance: Journey Into Mystery #90