There's Something Inside Your Head (Invader ZiM AU)

Just Dib Membrane

Oh god, senior prom is just a couple months away. How stupid would Dib look going alone? ZiM would probably make fun of him for being "mateless", but then again, ZiM doesn't have anyone either.
Don't worry, though! Dib has a plan: Whoopsie Carrie. Or, just "Carrie". One of Dib's classmates from advanced chemistry, and actually one of his friends. He had a friend this year!
To be honest, he really liked her. Well, he didn't know if he really did like her, or if he was just excited she was interested in the paranormal and could talk to him about it. But, either way, he liked having her around.
And he wanted to ask her out.
But could he? That's a lot of risk... and so many things could go wrong. He was Dib Membrane, after all; he could get distracted by a monster, he could fall into a trap, the Earth could explode because he's not looking for one second... and, most of all, there was just so many things wrong with him.
He could be just so aggressive sometimes... maybe even creepy... and sometimes just... way out of control and unreliable. He couldn't risk all his bad qualities showing at a date, let alone an invite to a date! Especially when it's the senior-frickin'-prom!
Dib was getting a bit desperate, so he went to the one thing he could always rely on: nonsensical sci-fi type science.
He would take one of the old, broken Membracelets, and turn it into something new. Which would turn him into something new... the best version of himself. It would both benefit him, and make a scientific breakthrough—possibly benefitting all of mankind as well.
Since, y'know, being the best version of yourself means being good... there'd be no more evil. If you take the evil out of yourself and the world, that would mean the perfect system.

"Dad wants to know why you're using his old tech."

"Out of my room, Gaz! It's important!"

"Damn, okay."

Judging Dib, the project may take about...oh...two days to finish. The first night of the experiment, he successfully altered the bracelet to actually work again. He would make the change-y stuff the next day.
But we're not there yet.
Because it's skool time.
A Thursday, to be precise; Dib started his complete promposal plan on Wednesday. He was thinking about it throughout the day, bouncing his leg in anticipation to get back to work.

"My, someone's looking extra tired today..." a familiar voice came from behind, sitting down in the seat next to him. "What's keepin' ya up this time? ZiM again?" Carrie pulled one leg up to rest on the chair with her.

"Huh?" Dib panicked for a second. "Yes—yes! ZiM! Ohh, that ZiM! I'm gonna expose him..!"

She laughed. "Yeah... convincing enough. You don't have to tell me."

Dib sighed with relief, watching her dyed red hair move just above her shoulders...suddenly, he was self conscious about his own appearance. His hair hadn't been shaved recently, so the sides of his head look weird growing out?? Is it weird he wears the exact outfit everyday?? Does he look like he smells bad??

"Oh, by the way, Dib, that new teacher they got for the detention room? Pretty sure she's a zombie—'saw her arm fall off earlier. My first thought was that she takes kids' brains from there, but then I realized she probably won't find a lot in there." Carrie leaned her head back a bit.

"Eh, 'probably just likes the cholesterol..."

"Maybe."

Dib huffed. "So, about ZiM—"

"Yeah, your boyfriend?"

"Not my boyfriend!" Dib's voice got a bit high and loud, and he froze. He cleared his throat, his voice noticeably deeper. "Not— not my boyfriend." He sighed. "About ZiM... I might be taking a break from, y'know, fighting him for a few days. To focus on something."

"WHAT?" ZiM stood up from behind a fake plant. "BUT WHAT SHALL I DO IN MY SPARE TIME?!"

Carrie screamed.

"HOLY HELL, ZiM! A DAMN WARNING NEXT TIME!" Dib yelled.

"I DID! I repeatedly called you big-headed and monologued about you! BUT WHEN WERE YOU TO TELL ZiiiiiM THAT YOU WERE DUMPING HIM..? ME?"

"Yeah, Dib, how could you do that to your boyfriend?" Carrie snickered, shaking a bit from shock.

"Dear lord, will you both shut up?" Dib slammed his face into the table, trying hard not to think about how they were all making a scene.

"ZiM, you're not even in this class," the teacher said, staring really confused at the green boy in the plant.

"Sorry, but scheming never waits. But I guess ENEMIES do, HUH?!" He picked up the plant, storming off dramatically. "Come on, Henry..." he told the plant.

"...what the hell just happened?" Dib looked at the girl next to him.

"I'm just surprised you're not used to this after six years."

"Yeah, well, I'm not used to him just appearing when I'm talking to a pretty—yyyyy coooool persoooonnnnnnn..." he did finger guns. Dear lord, help this bi disaster.

When he got home that night, he went straight to work. If that single period had taught him anything, it was that he needed this. He needed to become his best self, and he needed science to do that for him. And, based on the stupid argument with ZiM—and several arguments that had happened in other classes and on the streets—he needed to find goodness for at least himself.

He worked. He worked for many long hours, coding, brewing, fixing... he managed to get the bracelet to function to a single idea: all his goodness would be amplified, and all his badness would be stored in the bracelet. Perfect! No need to worry! He'll just separate the good from the bad, and everything will go smoothly!
Though, he hadn't tested the device on anything yet... and, honestly, he probably shouldn't get anyone else involved. Also, he was desperate. However... by this point, the bracelet was now finished.

In a leap of faith, he put the bracelet on...

...and felt nothing happen.

Ah, screw this, it probably just needs some time to work. So, Dib kept it on the rest of the night.

And went to sleep.