Remember in Ch. 3 of "Nightmare in Mari Land", when I said Casey played a part in another story I had in mind? Well, here it is. Also, this takes place during Season 1. Now, enjoy a whole lot of crossovers.


As her family left to the Lunar Comet Carnival, Lisa requested Casey, Nancy, and Hana to meet up in her room. The only obstacle was how to deal with Lucy. When she turned to give her sister an excuse, Lucy was no where to be found.

"Wait! Where did see go?" Casey asked, not familiar with the Loud siblings' routines. Lisa calmly reassured him, "No need to worry, Casey. My sister tends to vanish when she needs to."

Hana, who had put away her game after finishing a level, suggested something, "You mean like Mimi?" "Something like that," Lisa answered as she ordered R.O.B. to "meet her downstairs". As they entered Lisa and Lily's room, Nancy was having a fun time,
/"Whatever shall we do today, Lis! I just can't contain my excitement!" she added a twirl in the end. Casey finally had enough of this, "You know you can drop the act now right, Nemesis?"

The little girl then gave the teen a glare, "Well excuse me for staying in character," she said as she was covered in black dust. As it cleared, she then appeared as a petite-looking girl with long black hair, golden eyes with vertical silt pupils
/and tanned-skin and she was now wearing a black yukata with a star shaped gap symbol on it and she has a yellow sash wrapped around her waist. "There was no point in continuing that façade, Nemesis," Lisa said. With her family gone, the coast was
/clear for her to explain what was going on. Whilst she was donning a metal backpack that looked like an octopus, Hana was admiring the yellow flower that was next to Lily's crib. Something about it felt...odd.

The young genius walked to her closet and with a tap on the octopus on her belt buckle attachment, 4 robotic arms sprung from the holes from the side to activate multiple keypads for each that opened the back of the closet to reveal an elevator with titanium
/doors and a large marking of an octopus engraved on it. It may have been an odd design choice, but Lisa had succumbed to the codename her comrades have given her: Dr. Octopus. Why would they give her such a name? Well, that is a long story.

Lisa had been known to create multiple machinations that boggled the mind, both for the device's functions and how she was able to do it at her age. One of her accomplishments was what she considered her magnum opus; a pack that had robotic appendages
/that she could control with, able to assist one with everyday activities. She even had created a few robotic droids that had the appearance of octopi, since she was intrigued by their biology.

Though she has yet to reveal her creations to the general public, even to her family, she had used them to construct a lab underneath her home, seeing that she couldn't conduct many experiments with her baby sister in the same room.

The group took the elevator to enter the lab with R.O.B. already being there, having used a specially made entrance for him in the living room on account that he is unable to use the stairs. Usually one member had to carry him since he was made with light
/material, but luckily Lisa was working on a stair lift for him.

Her lab was grand. She made a section for each type of experiment she conducted; from animal test subjects to nanotech to...the special assignment she contacted her allies for.

Speak of the devil...

"Hey guys!" a voice came from behind the group. They were met with a girl who appeared to be Lori's age, had blonde hair with a "devil tail" (like a pony tail but with a devil theme), a 2 piece yellow midriff-baring uniform with purple stripes and a heart-shaped
/hole on her top with a laughing heart on the back. Main note to not mess with her was the 4 holsters containing a gun for each (2 on her hips and 2 on her legs).

"How did you get in here, Annabelle?" the child prodigy would have greeted her normally, but she was still wary of her colorful entourage. "One, you left your front door unlocked, and two, I hitched a ride with R.O.B.," Annabelle said, with the
/droid looking at his creator shamefully or at least as much as a robot would.

Before anyone else could get a word in, Lisa felt a tap on her shoulder. She turned to find someone staring at her only 2 inches from her face, which startled everyone as they realized they had an unexpected visitor. This feeling was familiar, but from
/a different source.

The guest was a red skinned girl with black hair, horns, a red coat and tail with spikes near the tip, and claws. She wasn't alone, however, since she was holding what appeared to be a purple teddy bear, who was dressed like a school professor holding
/a stick that had a...questionable object on the tip.

Everyone finally settled down from the surprise, "And how did you get in here, Mimi?" asked Lisa. Mimi, being the strong silent type, responded by stepping out of her view of the lab... Which revealed a Mimi-shaped hole in the wall.

"You know, you should really teach her how to use a door, Poofessor," Casey told the stuffed toy. It might seem odd or completely crazy, but this was no toy. It was the Yo-kai Poofessor, "She knows how to use doors, you philistine. She just prefers to
/make a 'flashy' entrance," the Yo-kai explained.

R.O.B. scooted(Is that right?) up to Lisa to inform her the others have arrived via a trans-dimensional portal. Her remaining 'friends' were quite the odd bunch; Zog, a Triceraton- a long extinct race of aliens- who was familiar with
/earth customs. Conker, one of Lisa's earlier animal experiments that had escaped with another animal test subject who he claims he had not heard from since. Kiryu, a synthezoid created by Ultratech- a company from Dimension X, which happened to be
/most of her comrades' home dimension- and Conker's muscle. He wore a gray jacket, had spikey slicked-back silver hair, and, most notably, a dragon's tail and horns.

"So your little toy worked, 'Mr. President'?" Nemesis asked the teen in a business suit, slightly mocking him. "As a matter of fact, Nemesis, My Insta-Dimensional Transporter was a success," Said the teen. "Yeah, speak for yourself, Clemont," came
/the voice of the red squirrel, Conker, who was missing a tail. "Well...its still a prototype. Anyway, any missing limbs should probably return shortly. ...Maybe," he said, scratching the back of his head.

Clemont was the youngest President of Ultratech, so he had access to many of his own machines including two Fulgore units that never leave his side, unless he says so. Luckily, Conker's tail came back just when the final member of the team could show
/up...unfortunately.

"DADDY!" Hana was the only one to welcome her father as she ran up to her father. "Heya kid, You miss me already? I've only been gone for an hour."

This was Claptrap. Though he gets along well with Casey, Conker, Kiryu, and his daughter, the rest were slightly annoyed by the little robot's personality. "So, Doc, why'd you call us here on our day off?" Claptrap asked. Everyone also wondered
/this in their minds, and Lisa could tell from the looks on their faces.

GLaDOS rarely gave any employee of Aperture a day off. When she did, it was either a part of some test or she no longer had any use of them.

Anyway, seeing how they have all gathered, she finally started explaining, "Greetings, comrades. Follow me and all will be revealed," she used her robotic arms as a form of transportation. As the group ventured deeper in the underground lab, they passed
/multiple "octobots" who were keeping surveillance, keeping guard, etc. One of them came to its creator with a small orb in one of its tentacles, "Prototype of the nanobot metamorphose is ready, Dr. Octopus," it said in a
/monotone robotic voice.

She grabbed the orb with a "tentacle" delicately, "This will do for now. Contact me when the final product is complete," she responded in an authoritative tone, as she placed it in her pocket. "Affirmative," as the octobot took
/its leave the team finally got to there destination in the lab; a large spaceship which looked like its seen better days.

The wreckage was unsightly to say the least. The exterior seemed to be missing a few components; such as a missing engine, the front seemed to have been scorched, and large, gaping holes on the sides of the ship. The hatch was destroyed as well, making
/it easier for them to enter.

Zog, being an ex-sergeant, was familiar with this form of technology, but couldn't pinpoint the exact species. While Clemont was fascinated by this discovery, Kiryu used his left eye to scan the area, "Koko de hageshī sentō ga okotta yōda," said the samurai.
/From what he scanned, the scratches and structure damaged by an intense brawl inside. Possibly causing the ship to crash.

"Must have been some brawl. This place is a dump," Nemesis responded. She saw some places like this; including Aperture and her birth place. But this took the cake. R.O.B., strangely, looked somber about this place. Hana walked over to the robot
/an tapped on his shoulder plate, "You okay, R.O.B.?" she seemed genuinely worried about her friend.

"Y-yes. I'm fine, Miss Song," R.O.B. did his best to reassure the little girl. Zog, after finishing his inspection, turned to Lisa, "How long have you had this here, Doctor?" he said with a hint of suspicion in his voice. He never fully trusted
/the genius. Her personality reminded him of the A.I. they worked for, and that was not a good thing. Sometimes it was hard to tell them apart.

"It's nothing of importance to you, Zog. This is merely a make-shift containment vessel for the assignment I have for all of you," the girl declared. She was then met with a groan from Casey, 'Come on, Doc. You have us work on our day off?" the boy was
/not on board with this.

"I assure you, Casey, it is a matter of grave importance."

As she said that, R.O.B. opened the barely functioning door to reveal a large room filled with electrical cages and capsules powered by Lisa's modifications. What the cells contained gained everyone's attention.

Each cell had in them a gelatinous creature in a variety of colors. "These were an unforeseen consequence after recent experiments conducted on my latest test subject," the words made Conker shudder as he recalled his days in Lisa's lab. He has experienced
/things no squirrel should have to go through. Ever.

"So, what exactly is this new guy you have here, kid?" the squirrel tried turning his focus on something else. Annabelle and Hana's attention was diverted to a capsule that contained a blue slimy substance that appeared to have a green antennae with a
/yellow hue at the tip. "This ones kinda cute," said Annabelle. The little slime seemed to blush at that response.

"I would exercise caution with Subject: MM-034. It can be...'grabby' with moist surfaces."

Understanding Lisa's warning, Annabelle led Hana away from the slime. "As for this 'new guy', RE-199," Conker growled at Lisa calling him his subject name, "From the technology I have analyzed in this ship, this creature originated from Dimension X. I
/am currently holding him in here."

With a tap of her belt buckle, two octobots from the other side opened the still functioning brig of the ship. They were keeping what seemed to be a black sludge that appeared to have an appearance of the most venomous creatures on Earth; A cobra's slender
/body, scorpion claws and tail, and spider legs and a white marking similar to a Black Widow on the back of its hood.

The creature hissed as its hood expanded at the presence of its' captor, only to receive a jolt of electricity from its prison. Zog appeared to be the only one shocked, "A Klyntarian? Here?"

Even though they didn't get it, everyone knew this thing was bad news if Zog of all people was worried. "I have already discussed this with GLaDOS, and she allowed me to house Subject: KS-Prime, and the others you saw, in Aperture," Lisa explained. It
/was clearly too dangerous to keep these creatures in her dimension.

"Great. Looks like were a moving crew," Nemesis said as she changed into a worker's uniform, "Welp. Better get to it. Right, Mimi?" the demon in question was also dressed in a uniform similar to what her friend was wearing. She always found an excuse
/to play dress up.

However, before they could begin, a large shockwave caused the entire lab to shake violently as pink and blue energy filled the air for a brief second. "What is happening?! R.O.B., Report!" Lisa ordered. R.O.B. pugged himself to the ship's functioning
/computer system to figure out what was going on.

The computer displayed on screen: Dimensional Distortion Detected. Once that was cleared up, shattered glass and loud banging could be heard back in the containment facility. The group retreated back to see what was happening, failing
/to notice the flickering energy coming from KS-Prime's cell.

As they entered the prison, they saw multiple portals around the room, absorbing the experiments. Transporting them to other dimensions. The group held anything they could to avoid be sucked in. Claptrap held his daughter close as Kiryu (with Conker on
/his shoulder) grabbed them both with his tail, Casey, Annabelle and Nemesis were grabbed by Zog as he stood his ground, and Lisa used her arms to grab R.O.B., Clemont, and Mimi (holding Poofessor close) and used wrapped a free arm around a steel column.

"Clemont-san, anata no debaisu o kansei sa semashita ka?" asked the synthezoid, now using his katanas as anchors by stabbing them through the steel floor (Yes, there that strong). "Affirmative...kind of. Let's hope for the best," shouted the CEO as he
/tossed a small box over to the portals. Said box halted in midair and opened to release an energy burst that sealed the portals.

Clemont let out a sigh of relief, "Success," he congratulated himself under his breath, "Sorry about your lab, Lisa," he consoled the fellow genius. "No matter. This could be repaired, but now my experiments are loose-" she paused as a horrifying thought
/came up in her head, "No no no no no," she found herself repeating as she used her tentacles to hastily return to Prime's holding cell... Only to find it empty and her octobots guarding it destroyed.

Her mind went into overdrive trying to think about what to do next. Thankfully, R.O.B. was able to calm her down, as the team came in as well. "So much for an easy job, amirite?" Claptrap tried to lighten the mood.

Silence...

He didn't. Lisa stood on her legs as she grabbed the nanotech orb from her pants pocket. She then placed in her belt buckle and pressed it. When she did, she was engulfed in blue light as her nanobots got to work. When they finished she was now in gray
/armor, and her glasses were transformed into goggles.

Annabelle was the first to respond, "Nice outfit, Doc. Really suits you," she said with genuine kindness. "This is only a prototype. You have yet to see the final product," Dr. Octopus corrected. She was definitely building up to something.

"Nigeta hanzai-sha o oikakete wa ikemasen ka?"

Casey asked, "Shouldn't we go after that black snot thing?" "Kiryu just said that," Poofessor responded. "Well, excuse me. I can't understand a word he says," the hockey player defended himself.

"Anyway, their both right. We must apprehend the Klyntarian before it finds a host," Zog declared. He knows this species well, so there was no time to waste. Except there was a minor issue with that.

"I should warn you, this Earth is not like Clemont's. The 'apes' here still fear the unknown," Dr. Octopus warned her comrades. "Well, that's just great. I mean, most of us will be okay, but how do you suggest an alien, a robot, a science experiment,
/and a demon walk into town?" asked Clemont.

"I don't know. Ask a rabbi!" Conker joked.

"This is serious, Rodent." threatened Zog.

"We could try going out at night." Nemesis suggested

"Not happening."

"What's with you and the dark, Zog?" Annabelle was curious.

"Nothing. Its just because the symbiote would be impossible to track at that point."

"Not true, Master Zog. Madame Lisa implanted it with an internal tracking device, as she does with all her experiments." R.O.B. pointed out.

"Wait what?" Conker asked surprised.

"It's okay, Big Guy. We're all afraid of something," the shape shifter patted the Triceraton on the back.

"I'm not afraid."

The argument continued, and Doc Ock had just about enough of it. "CEASE THIS SQUABBLING! IT IS GETTING US NOWHERE!" she yelled as loud as she could. Yet, it fell on deaf ears. Until an unlikely source silenced them.

"WAIT!"

Everyone turned to the Cl4P-TP Unit and his daughter, which the latter was holding a briefcase from her father's shed. "We have an idea!" the girl exclaimed proudly.

"Now I'm scared."


Starting off this series, here's a side story to "Nightmare in Mari Land". If you wish to know who the characters are and where their from, here's a little guide for you:

Casey Jones- TMNT (Mostly based off the 2012 series, but a little different)

Nemesis- To Love-Ru (No shame in being a fan)

Hana Song a.k.a. - Overwatch (Like Casey, she's going to be different)

Zog- TMNT (Also different)

Kiryu- an OC of mine

Annabelle- also an OC of mine

Clemont- Pokémon (Vastly different)

Mimi- Property of Bleedman (Grim Tales)

Poofessor- Yo-kai Watch

and Claptrap- (Borderlands)

Also, there was a special guest in this chapter. Let's see if you could spot her. Hint: She's also from an anime I'm not ashamed to be a fan of.