Chapotraphouse

The Mi-Go of the Lovecraft Mythos are basically that (via the CoC and DG games, which are kinda the main form of the modern Mythos). They are interested in the adaptations of terrestrial life to the exotic pocket of "not insane horror space" it occupies. Humans are an important part of that, but they aren't people - nothing in earth-space can be people, due to it being sheltered from "actual" reality.

Though they're willing to accept those who are infected with cosmic spores/etc and attain spooky enlightenment... but they're probably going to be dissected as well, just willingly.