This fanfiction was collaboratively written by myself and girr-chann on Deviantart. It is a Sergeant Frog / Invader Zim crossover. As a crossover, it isn't merely a mesh of two fandoms, but a likely encounter between Keronians and Irkens at war. It focuses a lot on the characters, including several OCs. Enjoy!

"Pu pu. My newest invention is almost done," Tororo said with a soft, mischievous laugh as he sat on the plush blue cushion in his small workspace, tinkering with a new weapon. His workspace—otherwise known as his room or his lab—was small in diameter, but in height, it was large enough to contain well over twenty monitors and computers mounted on the walls. He sat amid a pile of electronics and food, some of which was entangled in a loose haphazard of wires. A half-eaten pizza made the room smell like warm cheese.

Tororo was about to meet his new lackey, but couldn't care less about that. He was too busy. He certainly didn't care about looking like a slob in front of her. She was supposed to arrive within the next sidereal day, but in his current state of relentless focus on his latest project, he couldn't have been forced to lift a finger cleaning.

Garuru's ship had been parked near the intergalactic train station only minutes ago, and Tororo refused to leave the lab while his platoon went to fetch her.

Garuru hadn't bothered the Shinpei, knowing his reclusiveness would pay off when he finished his work. Besides, he was in a hurry.

So the Lieutenant left for the terminal with only Pururu and Taruru. Zoruru stayed behind to guard the ship.

"She should be on the next one," Pururu said with her nose in a piece of paper, then looked up at the gate numbers. The three of them waited, paying no mind to the masses of aliens passing by them. There were very few Keronians in the crowd. That would make the trainee easy to spot.

They watched the windows of the next train for her, but did not see any Keronian passengers.

That was because she was in the far back of the train, avoiding contact with people in general. She was a blue-skinned tadpole with long purple hair, a yellow helmet, and lightly purple tinted spectacles that resembled the ' ' character. Her belly symbol was that of three pixels set in a triangle, intersecting at the corners. Her name and rank was Yumomo Jotohei.

When the train stopped, Yumomo nervously waited in her seat. While she understood that trainees like her gained crucial work knowledge and experience from being paired with seasoned platoon members, she disliked working with others. She didn't look forward to this... At all. She hoped her soon-to-be mentor hated small talk just as much as she did.

Yumomo squeezed the supplies she carried in her arms, even more anxious to meet the platoon leader. She trembled in her seat, and her palms felt cold and sweaty. Her mind raced. What was this "mentor's" name again? Due to her nervousness, Yumomo hadn't really been paying attention like she should have... After all, the Garuru Platoon's reports on her would determine her future in the Keron army.

She could not blow this.

It irritated her that her glasses were foggy from the train ride. There were many aliens traveling via train, and all the body heat only made the train ride sticky and humid. Oh how Yumomo hated train rides...

Finally, everyone in front of her began to exit, allowing her a chance to stand and make her way out of the station. A voice on the intercom reminded everyone to have a great rest of the day; Yumomo irritably thinking to herself, 'Not likely...'

As she exited the train, she looked around. There were many large aliens walking past her and she found herself being bumped from all directions. Nor could she tell where she was going. She wandered around like a lost child, looking just as confused.

"Hey! Over here!" a male voice called over the crowd a moment later and she looked in that direction. There was a blue Keronian with small beady eyes waving his arms to catch her eye. Next to him were two others: a pink tadpole holding a small stack of papers, and an older purple male she instantly recognized.

First Lieutenant Garuru.

It would be an understatement to say that Yumomo was a nervous wreck when they spotted her. She saw the tadpole coming toward her and bashfully looked down at her feet, silently greeting them with a small bow. She usually wasn't one for manners, but her mother was strict when it came to dealing with other platoons. Especially higher ranking soldiers.

Pururu politely nodded her head at Yumomo and greeted her with a friendly "Hello," appearing un-intimidating.

Garuru slightly dipped his head, intimidating sharp eyes stopping on her and easily compensating for Pururu. However, when he spoke, he was more friendly than she expected. "Yumomo Jotohei... It's good to finally meet you." he said respectfully, earning a puzzled glance from Taruru.

It was easy to see how nervous Yumomo was, her arms visibly trembling as she held onto her things. It was hard to believe that she could handle much in the military. She didn't look that impressive, so the way the Lieutenant greeted her seemed out of place to him.

But there was no time for questions. They had to hurry to their next mission immediately after picking her up.

Yumomo noticed Garuru had his eye on the luggage claim and, shyly, she muttered "I ah... Have everything..."

"Then we're ready to go. This way." Garuru said as he made to turn and walk into the crowd. The others followed.

Yumomo was anxious to get away from the train station... There were too many aliens, and she felt like all of their eyes were focused on her. That irritable, cold sweat again...

Yumomo hesitantly followed the platoon back to their ship. Which one was supposed to be her mentor? Was it the blue one? Great... He didn't look that smart at all... This couldn't be the tech who was supposed to train her.