While most of us have swiftly moved past the question of whether or not UFOs exist, the troublesome relative of this phenomenon has arguably been that of the existence of said UFOs occupants. According to former Canadian defense minister, Paul Hellyer, in a 2014 interview with RT News, there are over eighty different species of aliens plaguing our planet. While there is no irrefutable evidence proving this ambitious claim, one type of alien species seems to hold the reins as the most frequently reported: the grays.