This is an idea I wanted to make for Halloween with Rocket Raccoon and his girlfriend Lylla the Otter

Rocket Raccoon and Lylla the Otter belong to Marvel

Rocket wants revenge on the people that betrayed him from a mission. He finds and makes a potion that can turn him into a muscular were-raccoon though something goes wrong when he wants too much.
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Rocket seemed happy about his new idea and invention. It was late at night, though he wouldn’t be able to tell if it wasn’t for his alarm clock on his table as he’s in the middle of the galaxy. His ship floats around in the darkness as it soothes his mood and helps blend in to escape from any of those bandits he had been chased by. The raccoon had stolen some chemicals from a planet that had back-stabbed the bounty hunter when he had a mission to hunt and return the criminal to their planet. As he had hoped for some cash, the people in charge changed their rules and considered Rocket to be a trespasser before they even paid him. But before he had left that unlawful place, he took a trip to their homes and stole whatever he could, one in which was a science lab and had tons of strange chemicals and mixtures. Now with those chemicals, he plans to make something useful out of it. Luckily he had a book full of incredible and awesome experiments that could help him get his revenge on those jerks. He looks through the pages of the book in hopes to find anything that he’ll find easy and most impressive for him. He wasn’t alone in his ship however. His girlfriend Lylla the otter was with him. She not only had heard about this incident but was there when it happened. She was on the ship, waiting on Rocket until he had come back with a couple of items and hurried over to start the engines. Later he told her everything and she wasn’t happy about it. Not at him though, but for what the others did to them. So having her by his side about it does make Rocket happy. Lylla came into his room with a cup of warm coffee, something she found on Earth during her trip there. “Here you go.” She said, putting the cup right next to the book Rocket was reading.

The raccoon looks up at her and smiles, appreciating her offer. He carefully picks the cup up and takes a little sip, making sure that he won’t burn his tongue. “Thank you, babe. It’s nice to have you with me.” From anyone that he would trust to be on his ship, Lylla would be his number one choice. “By any chance do you know any chemistry because I have no clue whatsoever.” Rocket may be a genius in engineering but chemicals isn’t his strongpoint. He’ll get there soon once he figures out how to measure every single thing from the book. Maybe he didn’t get any equipment to help as it talks about using a hot plate and multiple beakers with measurements.

“I’m sorry Rocket, that’s up to you.” She massages his shoulders gently, how it forces a lovely pur from his throat. Lylla certainly knows how to make a fierce racoon at his calming times. “Maybe we can try tomorrow once we find someone who knows?” Though Rocket would want to take her suggestion, he fears that there isn’t enough time for that if he has people hunting him down for theft and unfair trespassing.

He softly sighs. “I can’t. My mind needs me to find something to teach those punks about messing with me. Maybe a destructional potion that could blow up stuff, or a gas that may blow them up as balloons.” He’ll love to switch sides from being the inflatee to the inflator. So many times his belly stretched out and expanded, but he knows that’ll change soon. As he goes through the last pages of the book, something catches his attention. It was a potion about becoming a seven foot and hugely buff were-animal. “Whoa…..now this is my liking!” It talks about using a part of an animal's DNA with some chemicals to create the perfect transformation with full control over it of any animal they want. “This is what I wanna do!” He’s certain that this will work. Rocket looks over the list of ingredients that he needs for this to make it work. As he looks at the table and back at the book, it looks like he’s gotten all the ingredients to make it.

As Lylla looks over the book, she does get a bit worried about this. “Are you sure, Rocket? Like you said, you don’t know how chemistry works?” He did say that and Lylla doesn’t know as well so it can be risky for him to do this.

“What’s the worst that can happen? Besides, I need to do this soon before those idiots show up!” He stands up from his chair and gets ready to start making this were-animal potion. Though he’ll need to boil the soon-to-be mixed chemicals before he starts the first step. He doesn’t have a hot plate, but what does have is a stove top. “Hey Lylla, could you get me a pot from the kitchen?” He asks, too excited to even think about any consequences.

Lylla wants to stop him from doing this but at the same time, she could trust Rocket on his ideas. “Of course, I’ll be right back.” She exits his room and makes her way to the kitchen. With the kitchen being messy from dinner, she hopes there will be a clean pot somewhere. She opens the cabinet door leading to the pots and pans, scoping around and finds herself a small pot that would be perfect for Rocket. She grabs it out of the cabinet and takes it all the way towards Rocket. “Here’s one.” She puts it down in the middle of the jarred chemicals. “Now don’t do anything stupid, Rocket. These kinds of things do kill people.” She warns him.

For now he brushes it off and gets working. First he puts in the first ingredient, Rythoal, which helps strengthen the bones during the transformation. He puts about as much there needs to be from the book, a cup worth. Though he just pours a little bit in since he doesn’t have any measurements to help. Next he checks out the second ingredient, Feralility, which supports and differentiate appearances of human and animal like structures, like having fur, claws, sharp teeth, and tails. Lucky for Rocket, he’ll probably won’t need it since he’s already an animal, or what Peter calls him on some occasions. Other times trash panda which does offend the raccoon. He doesn’t pour in the Feralility and moves onto the third ingredient. Unexothes is one that helps stretch out his skin as he grows. That one is differently important to him as he pours in as much as it needs. With two more ingredients to go, he checks out the fourth one. Merinton, a chemical that Rocket has never heard of before, is known for helping users take control of their were-animal personalities. It’s a very important and truly genius chemical to create. Now he wonders if Merinton was made because of these potions that he’s reading. He pours the exact amount in and as he reads the final one, his eyes widens and a grin appears on his face. The last ingredient didn’t have any special name besides Muscle Growth but it helps increase muscle mass and strength. If only he had tons of that stuff, he would be jacked for life. “Now this is what I need more!” He doesn’t even want to use the book’s instructions on it. Though there was something that seemed important. There was a warning at the bottom except the fact that it tells him to go to the first pages of the book to read it. Rocket was too lazy to look at stuff like that. “Hmmmm….heh.” He’s now thinking if the warning is about having too much muscle muss and turning him into a titan. He’ll consider that warning as an advantage to his plan. Rocket pours the entire jar of muscle growth into the pot. But before he could stir it up, he puts in a tiny bit of his fur into the pot just to make sure he’ll be a raccoon after rather than a different species that he doesn’t want. Once that was done, he used a wooden spoon that Lylla had grabbed before to stir up the potion.

As Rocket stirs up the pot, Lylla says, “I’ll turn on the stove. What temperature does it need it at?”

“Eh just put it at two hundred degrees babe. It’s just gonna boil the potion, that’s all.” He doesn’t care at this point. Lylla proceeds to walk straight over to the kitchen and turns on the heat to two hundred like Rocket requests. Soon after that, Rocket picks up the pot once it is finished and walks to the kitchen carefully, making sure not to spill the potion. Successfully making it to the kitchen, he puts the pot on the stove and waits for it to boil. While they wait, he notices that Lylla is still worried about this. “Hey Lylla, I’ll be fine. After my transformation, I’ll let you rub my six pack.” Rocket says, placing his hand on her hip and the other one on the back of her head. Then, he gently presses her face on his chest. If he doesn't have his suit on, she’ll be satisfied by his furry chest. “Would you like to sit on my belly and give me those soft rubs after?”

It does give her a nice smile the more she thinks about it. “Hehe, alright. Only because you love my special belly rubs.” Lylla does indeed give out the best for Rocket and he loves it so much.

Rocket chuckles as she says that. “Oh definitely. I’ll let you rub my belly anytime if I’m skinny, buff, and fat as well.” He might even gain some weight sometime in the future just for it. Soon, the pot begins to heat up enough for the potion to boil inside. “Oh, it’s ready!” Excited for this moment, he turns off the heat and puts the pot on the counter top. Then, he grabs a glass cup from the cabinet and waits for the potion to cool down. “Man, I wonder how large I’ll be. Would I weigh the ship down because of this?” He’s tempted to know. For a few minutes, the potion cools down enough for him to collect some with his glass cup without burning himself and holds it up to his face, watching this green color glowing from the inside. It was like toxic waste but somewhat harmless if he did the potion correctly. “Alright babe, let’s do this!”

Lylla’s heart races as she watches Rocket place the glass on his lips and chugs the potion down. Taking gulps, he doesn’t retract nor look disgusted by its taste which does interest Lylla into asking what it tastes like. After he’s done, he puts the empty cup down and pats his flat belly. “How was it?” She asks. “Are you feeling funny?”

“It wasn’t bad and I still feel the same.” From what he read in the book, the transformation should start in a minute. He looks at himself to see if there’s anything different about himself. Suddenly, his body heats up and makes it feel like it’s about over one hundred degrees here. “Oh boy, is this a…side effect?” He could feel sweat down his face and wanted to take his clothes off. Though as he tries to, it’s that moment when he can feel his body growing inside his suit. “Oh geez, it’s…working!” He does grunt and groan with the feeling of his body swelling up and transforming, from his height getting taller in inches and his width getting larger from side to side. Though he does assume that he’ll get buffer during this process, but for Lylla as the second that she looks at his abdomen has second thoughts, with a bit of concern of course. She could see that the middle around his stomach was expanding more than it should. The only issue is that she can’t tell exactly due to his suit covering it up.

It gets tighter around his waist with that belt making it uncomfortable with creaking sounds and strange gurgling. “Ummm Rocket…I think your belly is growing fat.”

Rocket, who's now reaching five feet tall, doubts that. He does look down just to see how it rounds out and expands, blocking his view of the ground and his feet. “N-no! It shouldn’t be! G-gah!” He winces from the feeling of his belt pushing into his stomach too deeply. “M-maybe it’s the fur.” That’s his reasoning. But once that belt snaps, it’s all downhill. It bwomps up his expanding and possibly swelling belly just a little bit and his ass feels more larger than it should be. Turning around in shock, it seems like his ass looks like two whole watermelons that jiggle when he gives it a soft slap. “W-what? How!?”

“Babe! You’re gaining weight!” Lylla says, standing back and away from her growing and transforming raccoon boyfriend, watching as his arms went from skinny to pudgy rather than musclely. The same with his thighs as it starts tearing his suit just a little at a time with small holes showing off patches of fur sticking out. Around his belly, the top half of his suit shows signs of spitting apart like ripping paper in half horizontally. Once it does, his belly bwomps out again and droops downward to his fat thighs.

“Fudge! Make it stop!” This isn’t what he wanted at all. What did he go wrong in making that were-animal potion? At least he was growing then shrinking or that would have been worse. His neck puffs up and his cheeks bloat out into two tennis balls. Getting up to six feet, his weight gaining slows down as so with his increasing height. He’s about the same size as a human being but more fatter and furrier. For one last effect, he inhales air into his lungs, expanding them like balloons before he lifts his head up to the ceiling and lets out a long, “AWWWWWWWWWOOOOOOOOO!” The howl was loud enough to shake the objects around them and force Lylla to cover her ears. Once the transformation stops, he looks down at himself again and whines like a dog. “H-how did I get fat!? What happened!?” He still doesn’t know exactly.

Lylla is curious as well. Maybe it had to do something about the warning in the book. She turned the page to where it tells the effects of the ingredients and when she gets to the information about the muscle growth ingredient, she now understands why. “Ohhhh….the warning states that by using too much of it, your body would turn the excess amount into fat based on body weight. So you should have done a little bit to be more muscular.”

Rocket was a fool not to listen to that warning. He huffs with frustration and crosses his arms. Rocket’s ears droop down along with his fluffy and longer tail that swishes around, pouting about the situation he is in. “Well this sucks.” He sits on the ground, grumpy and irritated. The poor fat were-raccoon was so happy about the idea to teach those guys a lesson but now he’ll be a laughing stock if they ever see him like this.

The otter feels bad about him and wants to make it all better. She walks up to him, getting between his legs and sits down to where she’s face to face with his furry and pudgy belly. “I’m really sorry about all this, but maybe some belly rubs could help?” Lylla offers as she puts both of her hands on his belly and gently rubs it in a smooth circle. For a few seconds, Rocket does feel much comfortable with her belly rubs, getting those nice huffs and smiles. “Plus, you did give me permission to rub your fat belly, remember?” He does indeed and he’s happy about it now. He looks down at Lylla and grabs her with both of his meaty hands, laying on his back while putting her on top of his large gut. “Oh? You want more?” She teases.

“Always.” Rocket says, leaning his head back and pants. He does act like a werewolf for sure and Lylla would have fun playing with him. Continuing on those belly rubs, Lylla sometimes presses her hands onto his belly just to see how doughy it is. She only got to about where her hands would only sink in. “Oh babe, you think you’ll love it if I ever pressed you into my belly?” They had never done it before but had mentioned it a couple of times during these events. “And I mean your whole body.” At this point, she’ll consider him as her protector if he would use his fat body to cover her up like a defensive mechanic.

She takes a couple of seconds to think about it. “It’s worth a try, but maybe when you’re much fatter than now, you cute fat were-raccoon.” She crawls on his furry fat front and dips her face down to give him a nice kiss. With all of this going on, Rocket doesn’t regret his plan. In fact, he would love to do more experiments like these on himself once he gets more chemicals. He still plans to teach those back-stabbers a lesson but maybe with a more devilish idea. Maybe he should act more viciously as a wild animal and eat them whole. He’s determined to know what they taste like now that he’s bigger.