[@Doc Doctor], how about an origin story for the fist full of iron fist or whatever fight. Your attack succeeds and electrocutes them, but during this time Rakkan's blood mixes into the woman and gets all science-y mixed into her DNA thanks to the electricity flowing through her. She gains some of Rakkan's power but some alterations and electricity thrown into the mix, so she can send the gooey blood out and have an electric current run through it to cause it to violently explode. Seems like an awesome power, sending out a bunch of droplets, use electricity, and watch dozens of explosions rip through the area!

She'd be an antihero that mostly leans on the side of good but vigilante justice. Unfortunately for you she's be a higher tier than our two current fighters so would defeat him pretty easily unless taken completely off guard. Of course at the moment she'd be practically dead so couldn't kill him then. Maybe some of Rakkan's lives on in her thanks to the mix, although can't gain his own body again or be conscious most of the time.