So I thought I'd give my hand a try with this pairing. I find them adorable! The idea isn't original, but I found it rather creative. Enjoy!
He wasn't a quack. He wasn't crazy. He knew he wasn't. He was just...eccentric! That's it! He had his own way of things. He was original! Flamboyant! A genius! Besides, would a crazy person stay up till the wee hours of the night to work on an invention that would benefit not only himself, but others as well? He should hope not! Dr. Cockroach sighed and pulled at his antenna. He almost had it. Just a few more equations, some mixtures, and TA-DA! It would be done. He had to focus. He had to stay awake!
Maybe a few minutes of rest would do me some good...He thought sleepily to himself.
His eyelids slowly closed as he laid his head down on his desk. Right when he was about to let sleep overcome him, he popped back up.
"What are you thinking, old boy?" He scolded himself. "Think about the others! Think about Link, B.O.B., Insecto/Butterflyosaurous, and...and Susan! You don't want to disappoint them now, do you?"
He got back to work.
"Raise the four...multiply by pi..." He muttered to himself as he worked out the calculations in his head. "Divide by the circumference...Eureka!"
He did it! He had finally finished after months of studying and preparing. Failure after failure and he never gave up. This was it. He was sure of it.
Don't count your eggs before they hatch...He reminded himself. It still needs to be tested out...
He uneasily looked at the machine. Dr. Cockroach was no idiot. In fact, he was the exact opposite. He knew he should never test an unpredictable experiment on himself. Learned that one the hard way. Yet, he couldn't risk the others finding out his surprise until he was 100% sure it worked. It was with a shaky hand he attached the wires to his face. He put his hand on the dial and cranked it to the right. Then, with closed eyes, he flipped the switch.
Even he couldn't help the blood-curdiling scream that ripped out of his throat. He could feel the millions of jolts going through his body as it tore away at his DNA. He fell to the floor as he writhed in pain.
As soon as she heard the scream, she knew it was Dr. Cockroach. Even his screams were accented by his English accent. Susan ripped the sheets off of her as she stumbled out of her cot. Her door slid open and she turned to see Link, B.O.B., and Insecto come out of their designated rooms, each sharing a look of worry as they rushed in the direction of the scream. They all gasped when all they saw was a burnt, white lab coat.
"N-No..." Susan whispered as she picked up the still smoking coat.
"Alright, Doc." Link said laughing nervously. "This is a good one! Now where are you hiding?"
Susan just looked at Link sadly as tears started to form in her eyes.
"Link..." She started to say when a slight groaning caught all of their attention.
"D-Doc?" Susan said hopefully as she spotted an object moving in the shadows.
A handsome man stepped out of the shadows with his hand held to his head. He had slick, black hair and a pencil thin mustache. He was wearing a black turtle-neck and dark pants. He slowly opened his eyes and looked at them with familiar looking, amber eyes. B.O.B. approached the man in confusion.
"Who are you?" B.O.B. asked as he looked the guy over. "Do you know what happened to Doc?"
"What are you talking about, B.O.B.?" The man asked in a clear, English accent. "What do you mean what happened to me?"
"No way..." Link said. "Is that you, Doc?"
"Well, of course!" The man said rolling his eyes. "Who else would-wait."
The man looked down at his hands. His human hands.
"I-It worked." He said in disbelieve. "It worked! I did it! I figured it out! Guys, I did it! It's me! Dr. Cockroach! I figured out how to turn us all human, so that we can leave this god-awful place!"
Dr. Cockroach did a victory dance and looked at Susan.
"My dear, you can finally have the normal life I know you dreamt about. I could see it in your eyes. Now, we can all be humans!" Dr. Cockroach exclaimed.
"Doc, are you sure it's...safe?" She asked uneasily.
"Of course, my dear!" He assured her. "I mean just how do I look?"
"Well...uh.." Susan blushed. "You do look very...handsome..."
Dr. Cockroach tried to control his own blush at the compliment.
"Th-Thank you, but I came out fine!" He said quickly. "The pain doesn't last long, and the outcome is worth it. I promise."
"Well..." Susan said before smiling at him. "If you're positive it'll work, I trust you."
They exchanged smiles and Dr. C hooked her up and transformed in no time at all. There she stood with her original brown hair. Luckily, her suit changed with her. The others weren't as lucky when their turns came. Link, B.O.B., and Insecto stood in their birthday suits. Link now had tanned skin and green hair. B.O.B. was pale with blue hair. Insecto had slightly pink skin with orange-red hair.
"B.O.B., you-you're covering yourself!" Link exclaimed. "It's like you have a-"
"A brain." Dr. C interrupted. "Yes. He has one now. Humans need them to function properly."
"So I'm smart now? Woohoo!" B.O.B. started cheering as he removed his hands from covering himself. "Whoops!"
"Sorry, B.O.B., but just because you have one doesn't mean you are smart." Dr. C explained. "Any who~. We need to get you three some clothes. Come with me. I might have some extra clothes for you to borrow. Susan, you might want to head on to bed. We can tell Monger in the morning."
Susan nodded and they went their separate ways. Once she got to her room, however, she encountered a slight problem. The keypad was too far for her to reach. She couldn't get into her room.
"Uh-oh..." She said to herself. "Better go tell Dr. C..."
She headed to his room and ran into Link, B.O.B., and Insecto. They looked ridiculous. Doc's clothes were obviously to small for them. Link decided to just walk in the ripped pants without a shirt, where as B.O.B. and Insecto had the shirts riding up their stomachs. She had to stifle a giggle as she past them.
"Hey, guys." She chuckled. "Is Doc still in his room?"
"Yeah. He's about to get ready for bed." Link said without saying anything else.
Susan quickly went to Doc's room and knocked on his door.
"I'm sorry, Link, but that's all I ha-Oh." Dr. C stopped midsentence when he realized it wasn't Link complaining about his clothes. He self-consciously crossed his arms when he remembered he had taken his shirt off to go to sleep. "S-So Susan, what do you n-need?"
"Well," Susan blushed. "my keypad is too high up, and I-I can't get into my room."
"Oh." Dr. C said as he thought of possible solutions. He blushed at the only one he could currently think of. "You can stay in my room."
"Th-Thanks, Doc." Susan said as she stepped into his room.
He closed the door behind her as he thought of the best way to do this.
"You can use my cot." He told her. "I'll just sleep on the floor."
"I can't do that, Doc." She argued. "It's your room. I'll take the floor."
"Susan," Dr. C countered. "what kind of gentleman would I be if I let you do that?"
"I guess..." She agreed reluctantly. "Or...we can just share the cot..."
Dr. C blushed at the thought.
"Well, if you're okay with it..."
"Then it's settled." Susan nodded.
Dr. C laid down first and Susan laid next to him. They both shifted until they found a position comfortable for them both. In the end, Susan had her back pressed against Dr. C's chest with his arms wrapped around her. They both blushed as they felt each other's body heat.
"Goodnight, Doc."
"Goodnight, my dear."
With that said, they both fell to sleep.