There's plenty out there. So name a character and give your reason as to why you would choose them.
Maybe we can find someone new to fear who'll make the devil look about as scary as that coat in your closet that you thought was a monster ~_^
For me i had a hard time choosing. From Alucard from Hellsing, to Hellgirl, or even The gods of death themselves from Deathnote (although they're more funny then anything :P)
But hands down i give it to Balalaika from Black Lagoon. No evil superpowers here, nor horns or pointy tails. Just one women who looks like she could rule the world if given the slightest oppotunity O_o...
You get on her bad side, and you won't be alive for much longer. Simple as that ^^;