Species Name Generator

Species names in science fiction almost always come from one of a few sources, and knowing which one you are using makes the name feel deliberate. Many are demonyms built from a homeworld or language: Vulcan from Vulcan, Kryptonian from Krypton, Asari, Turian and Quarian in Mass Effect. Adding -an, -ian, -i, -ii or -ari to a root is the classic move, and the root itself carries tone. Soft, vowel-heavy roots (Aurelan, Selunae, Lumenari) suggest elegant or ancient peoples, while clusters of hard consonants (Krogg, Vrakk, Thrund) suggest warriors or predators. Apostrophes and doubled letters (T'kaal, Zzrith) hint at sounds humans cannot easily make.

The second source is the outsider's nickname. Humans in fiction rarely use the name a species calls itself; they say Bugs, Greys, Skinnies, Crawlers or the Watchers. Pairing an endonym with a human exonym (the Kesharii, whom marines call Floaters) is one of the fastest ways to make a setting feel lived-in. Hard science fiction leans on a third source, Latin binomials, so a spacefaring human offshoot might be Homo stellaris and an unknown organism Xenomorpha. Collective intelligences and hive species usually get definite-article names such as the Swarm or the Chorus.

The list above covers all of these patterns and groups names loosely by body plan and biology, from insectoid and aquatic to crystalline, energy-based and synthetic, so you can match sound to shape.