No matter how much she tried to flop, Splash Woman could not break free as Roll gave her a taste of her own medicine. Now she was the one being used a comfortable seat. Once more, Roll found herself enjoying the struggles of the woman under her butt, with her cheeks jiggling like jello from each pathetic struggle. Roll just rested her arms on top of her massive thighs and moaned as she continually felt electricity go up her mechanical spine.

"Roll?" once more he spoke her name. Now with her foe trapped, Roll looked into the eyes of the only man or machine she would ever want. Even after being defiled by the very hussy she was sitting on, her brother still looked just as desirable. Not to mention that seeing him hard again really helped to.

"Roll, you're so...big." Megaman said as he took in all of his sister. No matter how many times he looked at it, he couldn't believe how enormous Roll was now. Even now as all of her mass had moved to her legs and butt, the sight of her being fat all over was continuingly played through his head.

"Do you...like it?" Roll suddenly asked with a meek smile. Asking Rock that for the first time when he didn't have a robo-slut on top of him made Roll feel small for the first time since she got this new body. Before she could hear her brother's response though, her libido program once more spoke as she abruptly moaned. Splash Woman's thrashing, combined with her desire for Rock was causing something to happen inside her. Also, she reminded herself that if she was going to have a perfect moment with her brother and hopefully future boyfriend, the floozy had to go.

"One more second." she told Mega Man. She didn't know what was about to happen, but Roll rolled forward and stood, causing her still gigantic legs to send the sound of them simply touching the ground booming throughout the room. Lying on the ground, Splash Woman also responded by gasping for air she didn't need and sat right back up, ready to take the cow down anyway she could.

"You bitch, I'll..." Splash Woman's words died on her tongue as Roll spread her legs in front of her. With her massive thighs parted, she used her temporarily slim fingers to pull her pussy lips apart, but rather than revealing the shiny and pink insides, a green tentacle popped out of there!

Splash Woman screamed as the thing lashed out at her and wrapped around her body, Mega Man once more stared in awe as his thoughts and feelings became even more confused, and Roll searched her data banks to find out just what the hell that thing between her legs was.

"What is this thing?!" Splash Woman shouted. She tried to break free, but the tentacle seemed to be as strong as it was slimey. It also conveniently wrapped around her several times in such a way, that her boobs were squished from above and below. As she moaned from the rough handling of her goods, Roll stopped holding her head and flashed a devious smile.

"That's my umbilical cord. That crack you made about having babies with my brother, well this what you get for that." Roll told her. At this point, Splash Woman was becoming horrified. She just stared at the girl with the immense thunder thighs which made Roll tower over her as she remained seated on the ground while the python from between her legs tried squeezing the life out of her. One second later though, she saw something else that made her shriek.

Roll continued to grin as she made her umbilical cord jerk forward, sending Splash Woman screaming right into her slit. A wet slurp was heard as everything up to her chest soon vanished inside of Roll, sending said robot girl into a moaning fit. She wanted to punish Splash Woman, but she did not expect this.

Another robot girl was now widely spreading her cunt, and not to mention she just felt a helmet ram into her for the first time, which felt so amazing she couldn't believe it. She continued to thrash and scream inside of Roll, causing every submerged part of her body to scrape against Roll's inner reaches. It was almost enough to topple the obesely pear shaped robot girl, but Roll stood her ground, never wanting this feeling to end.

Splash Woman's tail slapped onto the ground and all around as she thrashed, creating more wet squishing sounds with every movement. Eventually, Roll thrust her hips forward to create an even more intense grinding motion, but that sent Splash Woman up to her waist into the cunt. Again Roll moaned as she was near tears from this pleasure. Who knew Splash Woman could make her feel this good.

Then, out of the corner of her eye, she saw that he was watching. Mega Man was smiling at everything she was seeing, with his member solid as a rock. The fact that he was turned on by what she was doing delighted Roll, and the sight of that cock made Roll decide to finally end this so she would have that thing inside of her next.

She bit her lip and focussed, putting all the strength she had into her pussy. She heard Splash Woman screaming even louder which excited her more and Roll could feel something building up deep inside her. She grunted as that fat booty the mermaid had was the hardest to get in, but feeling each succulent cheek squeeze into her slowly was incredible. Roll smacked her lips at the sight of the disappearing butt until with one final jerk, the ass and tail were finally gone and after that, Roll screamed as her lust burst.

Her cum splattered all over the ground, creating a massive puddle. Her gargantuan legs felt like they would give in any second, so Roll plopped her fat butt down, which made the room tremble. She just sat there, moaning in her own juices as she stroked her now fat tummy. No matter how much Splash Woman fought, there was no escape. Roll's womb was as indestructible as it was thick and fertile, leaving Splash Woman to a hot and sticky demise. Soon, she would be gone, and Rock would be all hers. Maybe she'd even get an upgrade from the aquatic hussy like her brother once did.