Take another look @ Japanese actress Tao Okamoto ("The Wolverine") as DC Comics' 'Mercy Graves' in director Zack Snyder's "Batman v Superman: Dawn Of Justice":
The character Mercy Graves debuted in "Superman: The Animated Series" (1996).
Originally the leader of a gang of female thieves...
...Luthor was impressed by her mixture of ruthlessness and street savvy.
He offered her a job, taking her in and entrusting her...
...with his personal security and 'dirty work'.
...Mercy uses a rough, street-form of kickboxing as her preferred form of attack.
She is also an expert with most forms of handheld weapons.
Click the images to enlarge and Sneak Peek 'Mercy Graves'...