Hellcat

Patsy Walker is the happy-go-lucky Hellcat. As a teenager, her mom created a media empire around her. She had comics and such based on her life and her friends. Her entire town became superstars. She grew tired of this life, and always dreamed of being a super hero. Finally, her chance came when the Avengers offered her a suit that enhanced her agility. She donned it and became the Hellcat. She later joined the Defenders as well, and even died. She recently returned and got captured by Yandroth. She escaped and called Nighthawk, asking him to get help to stop Nighthawk--which brought about the return of the Defenders for the first time in years.

Interesting enough, since the original Defenders series it has been questioned whether or not Hellcat's powers come from her costume. It's more likely-than-not that they actually don't. Ever since she returned from hell, she now has a demon-senses, she sees magical energies and she can also create her costume at will--different versions of it as well!