The whole reptilian shapeshifting thing is just humans tapping into a prominent genetic sequence that supports a reptilian behavior. Light holographism can reveal our behaviors... I've seen people who are bird-like, bear-like, cat-like, sloth-like, too. We are a super mix of DNA that has come from many places in the galaxy, We ware a balanced concoction of all these intergalactic races. and because of that, we are humans.