List of Alien Races in DC Comics - A

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• Adaptoids - The Adaptoids were blob-like creatures in the vicinity of the star Arcturus that traveled to Earth-One in attempt to wipe out the human race. Able to adapt to any threat, they were defeated by the Justice League when they were exposed to the Thanagarian equalizing disease.
• Aellons - The Aellons are the yellow skinned reptilian humanoid peoples of Aello (Stormswift), Demonia, Harpis and Doc of Aello were all members of the Omega Men.
• Alien Invaders - The nameless primary antagonists of Armageddon: The Alien Agenda.
• Almeraci - The Almeraci of Almerac are a race of powerful humanoid psionics similar to the natives of Euphorix. They are represented by Maxima and Ultraa.
• Aloi - The Aloi are blue skinned aliens with ridged foreheads. The Aloi are at war with the Margoi over a device known as the "Grayl". The Aloi were represented by Tumlat.
• Anasazi - In the DC Comics Universe, the Anasazi Indians were resettled to planet Starhaven, represented by Dawnstar.
• Alstairans - The Alstairans of Alstair are one of four technologically advanced and constantly at war, spacefaring races native to the Antares system. The most well known Alstairan is their ruler the alien plant elemental known as Hyathis. Alstairans are plantlike humanoids with leaves instead of hair.
• Andromedans - The Andromedans of the Andromeda Galaxy are a race of superhumans similar to Kryptonians and Daxamites. They have red hair, albino skin and blue eyes. One of the Andromedans named Karb-Brak was exiled to Earth because he developed an allergy to superhuman metabolisms, he took the human identity of construction worker Andrew Meda. Superman and Vartox eventually cure Karb-Brak and return him to his homeworld.
• Angtuans- Inhabitants of the planet Angtu, a world with a thick, noxious atmosphere. Angtu was ultimately destroyed in the 30th century by the mutated native Mano.
• Anunnake - The Anunnanke are reptilian aliens who claim to have killed off the Dinosaurs, also known as the Hunter/Gatherers.
• Anndrann - The green skinned military geniuses Anndrann of Anndranna were later banished to Bellatrix, and are famed for their weapons of war. Iron has a deleterious effect on their cognitive abilities.
• Appelaxians - The Appelaxians of Appelax are a race of technically advanced aliens with the ability to create powerful artificial host bodies for their minds.
• Aquoids - The Aquoids are natives of planet Beltair IV.
• Aranes - The Aranes of Arane II are a race of light blue skinned, white haired humanoids, with tiny blue potruding horns on their foreheads. Rolind Siepur of Arane II is a member of the Dark Circle.