The reptillians that ToZ spoke about are not actual reptiles in the traditional sense, they are just known to look somewhat like that. They are anorganic beings, on a completely different trajectory to any life you can find here on Earth.
That being said, the Serpentine energy is considered serpent-like for a reason (multiple reasons, but for this argument we only care about one of them). Snakes are indeed pretty scary.
It's one of the primordial fears we have to keep us safe, like how some people are afraid of the dark (unknown), heights (falling) and so on.
People have tamed snakes, however, and that's a rare feat that takes skill. Similarly so, the Kundalini Serpentine energy is unpredictable, even destructive. "Mischevious" is a very good way to put it. With skill, some people can achieve the rare feat of controlling it and allowing it to penetrate the soul and transform it, evolving one into a higher being in a very literal sense.
