*Pony forms:

Zee, Pegasus

Light green coat+wings, bright blue eyes, mix of pale pink and blue mane.

Cutie Mark:

Female Irken symbol, crossed over by two knives

Zim, Pegasus

Green coat+wings, black mane, red eyes

Cutie Mark:

Irken Invader symbol

Dib, Earth Pony

Blue coat, gold eyes, scythe-like hair, glasses

Cutie Mark:

Grey, neutral face *

Zee and Zim entered a dark room, where a large tank stood, as well as a conveyor belt that stretched into a small, dark opening. Zee grinned evilly while Zim looked on excitedly.

She pressed a large button with her hoof, and Dib fell clumsily into the tank.

"Wha-where am I?" he said, panicking. "Zim, Zee? Let me out!"

"Nope." Zee said.

"Why not?" he asked desperately.

"Cuz we're evil!" Zim cried.

"And you shall be part of our plan." Zee continued.

"What plan?" Dib said.

Do you know how rainbows form, Dib?" Zim asked, heading over to the controls.

"O-of course-" He began.

"Do you?" She demanded. Dib froze. Now that he thought about it… Nopony knew how rainbows formed.

Zee retreated and smirked.

"Now A Rainbow's tale isn't quite as nice,

As the story we knew of sugar and spice," She sang in a deadly tone. A large device lowered from the ceiling to look at Dib. It had a large lens, like a camera.

"But a rainbow's easy once you get to know it

With the help of the magic of a pegasus device," Zee continued, firing up the machine. The large-lensed object began to glow a strange, purple colour.

Dib began to panic, beating the glass with his hooves. It wouldn't budge.

"Let's delve deeper into rainbow philosophy,

Far beyond that of cloudsdale's mythology," Zim continued, pulling up a picture of Cloudsdale on his computer.

"It's easy to misjudge that floating city,

With it's alluring decor and social psychology," He said, looking at the city with a weird fondness.

"But with all great things comes a great responsibility,

That of Cloudsdale's being weather stability," He said, pulling up a few pictures of Pegasi kicking clouds away and controlling the wind.

"How, you ask, are they up to the task

which the answer is in a simple facility," Zee said, as Zim showed a beautiful rainbow. She gestured to the giant machine looming in Dib's face. He stared at it in horror, the purple light becoming brighter and brighter. That light was the last thing he saw, for the machine shot a beam of the light straight at his face. Zim and Zee shielded their faces from the light, looking up when it faded. Dib was slumped against the tank, grey from head to hoof.

"In the Rainbow Factory, where your fears and horrors come true," Zee sang, dancing around Zim happily.

"In the Rainbow Factory, where not a single soul gets through," He replied, standing on his back legs in his victory pose.

"In the Rainbow Factory, where your fears and horrors come true," Zee sang, skipping over to the conveyor belt, where a colourful liquid was being poured into large buckets and vanishing into the small, dark space.

"In the Rainbow Factory, where your fears and horrors come true," Zim sang, putting his hoof around her shoulder as they watched.

"In the Rainbow Factory, where not a single soul gets through," She said, an evil smirk crawling up her face.

"In the Rainbow Factory, where your fears and horrors come true," He said, oblivious to her grin.

Zee shoved Zim into the tank with Dib's corpse, and slamming the door. "In the Rainbow Factory, where not a single soul gets through," She sang as the purple light engulfed him. The last thing he heard was her insane laughter.