Sawyer the Cleaner from Black Lagoon, her appearence is enough to frighten you with her gothic clothing, messy black hair, a big scar across her throat, and seething blue eyes, and the fact that she can only talk with an Ultravoice which generates this menacing sounding Robotic voice (it was scarier in the dub) is even creepier. Couple that with her Bigass Chainsaw, and what she does as a job, and you've got one lady who I wouldn't dare speak to!
MY FAVORITE ANIME IS BETTER THAN YOUR FAVORITE ANIME!!!!
I think Shiro from Deadman Wonderland. She is the most inocet girl from the show then she transforms the Red Man and kill everyone, after that she cames back in her inocent mode...
Now I wonder what will happen if Siro fights against Lucy or Nana or even Mariko? Who will win?