Alien Race Generator

Descriptions of alien races as complex as you like them, from simple appearance to a complete backstory!

  • For simple physical descriptions, choose 'Description.'
  • Choose 'Detail' to get a cultural snapshots and 'extras' for the race.
  • Choose 'Complete' to get a complete profile of the race and their place in the universe.

The Sanctum has had a technical upgrade in late September, 2025. If you see any issues, you can reach me at my Linktree.

My future Sanctum plans are here. Grab the data archives here!

Other generators you may like: Alien Race Name Generator
Your Options:
Races
The tiny race. They are a race of adventurers. They are almost immune to mutation - and thus evolutionarily stagnant. They interbreed easily with other species. They are in possession of advanced technology from an ancient race. They come from a high-gravity, desolate, mineral-rich world that is known for its archeological wonders.
The bulky, bat-like race. Their eyes give them 360 degree vision. This race moves bipedally. They are omnivores, but prefer to be herbivores. They love elaborate clothing. They are the results of other species interbreeding. Their world of origin is barren, resource-rich, and is known to have dissappeared mysteriously some time in the past.
The metal-based race that resembles the cockatrices of earth mythology. Many members of their species are strategists. Their major technical achievements are in force fields. They have an impeccable sense of fashion. Their world of origin is barren, has several, broken rings surrounding it, and is known for having some particuarly unusual wildlife.
The spindly race. They have two manipulatory limbs. This race moves quadrupedially. They are omnivores, but prefer to be carnivorous. They regrow lost limbs and organs. Many members of their species are philosophers. Their bodies have useful natural pouches. They can change genders under certain conditions. They keep their promises - even if it means death. They are working to join a large, star system-spanning government. There is little variance in appearance among individuals, making one easy to mistake for another. Their world of origin is watery, mineral-rich, and has a single moon.
The skeletal, simian race. They communicate by changing the color of their integument. They can change genders under certain conditions. Their economy is dependent on one technology: chemistry. They have a tradition of elaborate holidays. Their government is a dictatorship. A past war nearly destroyed them completely.
The octopus-like race. This race moves along on tentacles instead of legs. They are lithovores. Their greatest leaders were once doctors. They have no sense of personal space. Their government is ethical in its own way. They are actually highly sophisticated machines created by another people. They come from a high-gravity, pleasant, resource-rich world that is known for being an excellent place to observe astronomical phenomena.
The malformed race of felines. They can sense electromagnetic radiation. This race moves on many legs. They are omnivores. Their major advancements are in chemistry. Their government is a democracy. Their homeworld destroyed, they are seeking to find a new one at any cost. They were once a dead people - what brought them back to life is a matter of speculation. They once came from another dimension.
The bulky, fish-like race. They have a single eye. They move by crawling along the ground. They are omnivores. They are naturally cooperative. They were once a dead people - what brought them back to life is a matter of speculation.
The ice-based, loose-skinned race. They have four elongated manipulatory limbs. They can adsorb the DNA of another species and take on its traits. Their greatest leaders were once warriors. When severely hurt, they enter a regenerative trance. Their major technical achievements are in virtual reality. They are naturally curious. They are in possession of advanced technology from an ancient race.
The thick-skinned race. They are a race of scholars. They are mutating quickly. Their society is dependent on one technology: computers. They have a tradition of elaborate holidays. Another race uplifted them to sentience.

 

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