Ensimmäisissä Alien-elokuvissa oliota kuvattiin sanaparilla "täydellinen organismi". Ohjaaja Ridley Scott itse kuitenkin muutti asioita Prometheus-elokuvassa toteamalla, että alien-oliot itse asiassa osittain luotiin, eivätkä ne siis vain kehittyneet evoluution kuluessa.
Tulossa olevan Alien-sarjan luoja Noah Hawley on päättänyt ohittaa moisen kokonaan, ja saanut siihen jopa luvan Ridley Scottilta. The Hollywood Reporterin mukaan uudessa sarjassa alien-oliot ovat kehittyneet, eivätkä luotuja.
Lisäksi sarja on jatkoa ennen kaikkea kahdelle ensimmäiselle Alien-elokuvalle.
"For me, and for a lot of people, this 'perfect life form' — as it was described in the first film — is the product of millions of years of evolution that created this creature that may have existed for a million years out there in space. The idea that, on some level, it was a bioweapon created half an hour ago, that's just inherently less useful to me."
"In terms of the mythology, what's scary about this monster, is that when you look at those first two movies, you have this retro-futuristic technology. You have giant computer monitors, these weird keyboards... You have to make a choice. Am I doing that? Because in the prequels, Ridley made the technology thousands of years more advanced than the technology of Alien, which is supposed to take place in those movies' future. There's something about that that doesn't really compute for me. I prefer the retro-futurism of the first two films. And so that's the choice I've made — there's no holograms. The convenience of that beautiful Apple store technology is not available to me."