They infect her with the symbiote

"So this is the mighty Rocketgirl, eh?" Black Venomess said as she caught the heroine's face. The Black Venomess's inky black hand was sticky and cool to the touch. Rocketgirl gasped as she felt tendrils extend from the villainess's hand around her face and down her neck.

"You won't be escaping us twice," Black Venomess continued as more tendrils reached from her body to reach into Rocketgirl's silvery bodysuit. The heroine started as she felt the tendrils expand and watched them balloon her bodysuit, enveloping her breasts, her back and buttocks.

"Hydra, cover her limbs while I begin her conversion. If we do this properly, we can both be in control."

"Control?" Rocketgirl asked, vibrating her body as rapidly as she could in an effort to snap the tendrils that threatened to cocoon her. "What do you mean? What are you trying to do?"

Black Venomess and Hydra felt Rocketgirl's vibrations but dampened them easily now that they had the upper hand, their inky tendrils converging to nearly cover the heroine's skin by direct contact, not just through her suit as before.

"Trying? Why, my dear, we're nearly there," Black Venomess said as she teased Melissa's twat open with another tendril. As the tendril pulsed into the heroine, she gasped and moaned, her body shimmering as the inky blackness enveloping her combined with her silvery costume.

"When I passed my symbiote on to Hydra, I gained control of her body. I intend to control yours, too, Rocketgirl -- and since Hydra's contributing to your conversion, I expect she'll be able to control you when I have better things to do."

"No...no!" Rocketgirl screamed as the inky oil covered her completely, drowning out her field of vision and temporarily gagging her.

Black Venomess smirked, pulling back from the heroine. "Keep ahold of her, Hydra," she said. "I've got a few adjustments to make."

She tenderly held the heroine's head and gently kissed her lips. As she licked inside Rocketgirl's mouth, Black Venomess's kiss sent waves through the oils covering Rocketgirl's face, pushing the ink back, away from her beautiful features. The heroine could see again, could breathe again, and she felt the ink retreating down her neck, but also down her throat and coating her lungs and stomach. The excess cradled her breasts and butt, adding to her already alluring form. Some oozed into her vagina and settled on her G-spot. The symbiote inside her pulsed and the symbiote cupping her breasts squeezed as Black Venomess gave her another forceful kiss. Rocketgirl wailed into the villainess's mouth as she came.

Black Venomess stepped back and signalled Hydra to release Rocketgirl. Freed from their grasp, the heroine tried to move to strike them down, but her body froze in place the instant she prepared her fist.

"I don't understand," she said. She looked down over her body, which was now largely free of symbiote. The only black oil remaining covered her skin beneath her costume, in the shape of capri leggings and a tank top. "You've released me. Why can't I attack?"

"It's like I told you," Black Venomess replied. "I control your body now. So does Hydra. And since we worked together to convert you, we had a bit more freedom than when I converted her alone. We could mold the symbiote to the perfect shape to accentuate your frame while still allowing you to 'pass' for normal. To most people, most of the time, you'll just look like your regular self. Only the three of us will know the truth: that you've been infected with a symbiote and are under my control."

Rocketgirl growled and shook her head. "But why? Why convert me at all? And why let me look like I haven't been infected?"

"I've had to struggle to get by on scraps from Professor Lex for too long," Black Venomess replied. "Hydra can help do my evil bidding, but she's just as unpresentable as me when it comes to everyday living. But you, so young, so pretty, so kind and charming, so smart and noble... You are my ticket to freedom. As your regular self, you can get me anything I want. And as the superheroine Rocketgirl, you can give me legitimacy and help cover up my criminal operations."

"What makes you think I'll do anything for you? What makes you think I'll cover for you?" Rocketgirl spat in anger.

"You mean why would you say or do anything to help me...apart from my physical control of your body? Because you know if nothing else, your body will comply. It simply has ****."

Rocketgirl grunted in frustration, her immobility underscoring Black Venomess's point. "Maybe so, but I can still speak out against you, still tell the university and the police what you've been up to."

"I'm willing to bet your own self interest won't allow it," Black Venomess replied coolly. "You see if Hydra and I go down, if you cut off our supplies, then your own supplies disappear, as well. As the symbiote deteriorates from your skin, it will burn and consume your skin, as well. Not to mention burning you from the inside out, where I've implanted the symbiote inside you." Rocketgirl writhed involuntarily, Black Venomess reminding her through demonstration that she not only had symbiote on her skin but coating her insides.

"We're in this together now," Black Venomess taunted. "I'll send instructions when you're needed. But for now, begone." She snapped her fingers and Rocketgirl was startled as the symbiote triggered her superpowers, sending her speeding off out of sight.