Species which are only mentioned in their source media. This category has nothing to do with species capable of invisibiliy.
“The "bulbous vegetable entities of Mercury", as they're described, are a sapient Mercurian race...Mercurian (The Shadow Out of Time)
“The Krell are a species of highly advanced amphibians that went extinct approximately 200,000...Krell
“The Whill are a race of omnipresent beings who are in fact the species that the Star Wars saga...Whill
“The anaerobic lifeforms were the original intelligent inhabitants of the Earth, about 780...Anaerobic Lifeform (The Green Marauder)
“Mayzerians are a sapient species from the planet Mayzer, which are infamous for emitting highly...Mayzerian
“Allegedly, the Sheegupt were a sapient, space-faring species of the Milky Way Galaxy. It's not...Sheegupt
“The Tzee is a mysterious predator which inhabits the underground oceans of the Earth's moon. One...Tzee
Pages in category "Unseen Species"
The following 19 pages are in this category, out of 19 total.