Jack the Ripper (切り裂�ジャック, Jakku za Ripp� or Kirisaki Jakku) was a killer with claws, a mask, and bondage outfit. In the anime it was suggested that like his name sake he was fond of killing women and was shown after murdering a women and eating her soul "Jack the Ripper" immediately went after another women for her soul only to be stopped by Maka and Soul causing him to become their ninety-ninth evil human soul. (Wikia)