ONE ORGINAL TUNE?

I know this is a lot to ask for, but I'm not forcing anyone to help me. I do have experience in making music, but I don't know how good I really am at making them, so I was just wondering if someone would help me make one music for one specific character that plays a major role in my game. I want her music to be dark, evil, aggressive, and awesome.

A little bit about the character...

Nokia- A Daemon.
She's a psychopath/murderer who enjoys watching her victims suffer slowly. She gets turned on by their painful screams. She shows no sympathy, or remorse towards her victims. Her only sign of emotion is laughter when killing her victims.