This sprite from Red version is about the only one I find legitly "scary" in any small amounts, I mean come on, there is saliva coming off of that tounge near those fangs! Mind you that this Golbat does feed off of both human and pokemon blood alike, so that fact does not help either. x3
But the Pokemon themselves are never scary to me, I have an odd sense of "cute". Anything that should be "scary" actually appears fluffy and adorable to me. It's the fans of the Pokemon fandom that are able to make anything scary, this comes in the form of "CreepyPasta" of course. And that's why I love fandoms, since we can take something and make it whatever we want it to. I am a fan of the creepy pasta for Pokemon. This is just yet another reason why I don't find any of the pokemon too scary. x3
Actually, I stand corrected. .__. I'm absolutely terrified of bees... so THIS thing right here does have me cowering in the corner! ;n;