Aliens? (spoiler its not aliens)

Some art work concepts I whipped up for a piece of fanwork. Specifically made for Devilman Crybaby! The idea of being invaded by aliens/ trying to confirm their existence while trying to solve mysteries you barely have the answers to whilst also being followed by them? Probably way scarier than it needs to be but the artwork is suppose to convey the ominous nature of strange creatures that look like us and the fear of the unknown.