Reptilians Are EVERYWHERE!

Are they a wholly physical and biological organism like a human but use a technological method to overlay a human avatar over themselves when out in public or do they have the ability to shapeshift embedded within their DNA. Not necessarily changing the way they actually look in general, but simply putting any human who looks upon them in a type of hypnotic trance that changes our perception of them? You CAN make them reveal their true self with certain incantations or prayers.