Black Cat aka Felicia Hardy. A know criminal, thief, and small time super villain. She is also the love interest to Spider-Man when Mary Jane or one of the other thousands of girls he dates are around.  ...Oh well. Black Cat (1994) Was raised by a soldier/thief, taking the name of "Black Cat" from him. She loved her father, sadly he was killed at the hands of the Kingpin leaving her orphaned. Now she lives with a healthy inheritance, and steals more of the thrill than for the money itself. Her ultimate goal is to kill Kingpin in revenge or at least put him in prison forever.

By her personality you would not guess that she carries to much hurt. She is charming, calm, well-mannered, manipulative, and in most forms of the character's portrayal- seductive (however, let's try not to delve too deep into that aspect for this project). 

Go ahead and try out different voices for the character, nothing is set in stone.