Jack the Ripper

Jack the Ripper is one of the undead beings that Ainz Ooal Gown's summoned during the cemetery incident.

Appearance
It has green hair that grows upwards like the pattern of a flame and long angular elf-like ears. It's face is cover completely by a white smiling mask with yellow eye holes and is dressed in a black overcoat with purple outlines and white buttons. The tip of it's fingers are all covered with sharp blades.

Abilities
As a mid-tier level undead, it easily overwhelms it's low-tiered skeleton opponents. It has a very thin body frame and seem to lack muscles, but it makes up for it with it's lightning speed agile movements and deadly precision attacks. It can heard laughing hysterically as he fights.

Trivia

 * It is named after the notorious Victorian era serial killer of London.