According to Greek mythology humans were originally created with 4 arms 4 legs & a head with 2 faces, but Zeus thought they had too much power so he split them into 2 people and made their goal in life to find their other half- soul mates
I appreciate someone going through all this trouble to help someone spot the alien, but I still can't seem to find anything out of the norm. Perhaps a couple more arrows directing me where exactly the alien is located would help.
What about Fear of water? Phobias: xenophobia definition is a bit simplistic; yes 'strangers' but also more towards the fear of foreigners. Usually, used socially and culturally than just 'strangers' but I digress.