Let's revive this.

K/V: Killer
Name: Tigress(an alias, obviously)
Age: 25
Sex: F
Characteristics: Long blonde hair styled into a ponytail, muscular, scar-ridden body, scar on one eye(blind), red mask, red scarf, silent type, only speaks when necessary, cold, calculative

She's a sniper for hire, usually on high-end contracts to track down high profile targets. She doesn't discriminate, so long as she gets the money and the thrill of the kill. She has a 94% success rate over 120+ such contracts.
Scene(s):
1) She has been hired to take down the CEO of a corrupt business. Said CEO? You.
2) You decide to hire her to take out your archenemy.
3) You decide to hire her to take out your archenemy, only for her to betray you for whatever reason.
4) After a massive killing spree, she is finally confronted by the law.
4) Be creative.