"Close your eyes."

"Let the darkness embrace your soul."

"You will find a small fragment of light."

"Give it a form, a texture. . . any single detail you can think of."

"Once you are done, release the power of your soul in your hands."

A lavender butterfly appeared from the end of XGaster's finger. He held the butterfly with his one finger carefully as Frisk watched in awe.

". . . and you will have created something."

"This is how you use the Overwrite button," XGaster explained with a smile to the child below him. Frisk still watched in awe until the butterfly landed on the tip of his nose. He almost felt like sneezing if it wasn't for the faint giggles he heard not so far away. Frisk was quick to turn behind him once the butterfly left him alone, seeing [Name] from the distance from behind Alphys. They were quietly chuckling at the action of their younger brother, making him pout slightly.

"This concludes your first lesson. I created this timeline for you to explore your powers to its fullest," said XGaster as he watches Frisk return his attention towards him and the butterfly, watching it flutter away gracefully. XGaster stood up, making Frisk look up to him. "You can do your homework while I am absent."

"Where are you going?" Frisk asked him.

"I need to visit a few places for. . . some personal research," XGaster answered the little boy's question. Alphys and [Name] both walked to where the two were, with [Name] hiding slightly behind Alphys to avoid meeting XGaster in the eye.

They are starting to grow more afraid of him.

"Alphys will assist you in case you need something," XGaster told him while the monster nodded politely. "And [Name] will be your guardian in the meantime." And said human flinched at the sound of XGaster mentioning their name but nodded, nonetheless.

"Take your time and most importantly. . . have fun."

‹―💜―›

"We just need to understand each other," Frisk rephrased Chara's exact words to his sibling, who observed XGaster's and Alphys' notes alongside him. Chara, now as a ghost, leaned on Frisk's back. Frisk was telling [Name] everything that he said because they couldn't see him.

"Everything is better now. We're finally happy, don't you think so?" Frisk repeated the words while also asking [Name] a question. They nodded reluctantly, noticing that nothing bad has been happening over the course of these past days.

But they couldn't bring themselves to finally be truly happy if XGaster was still in the picture.

"That's why we gotta do our best to make XGaster proud," Frisk smiled as he continued to observe the notes. "Thanks to him, we're not in hell anymore."

The two siblings stayed in complete silence over the course of Frisk's homework. It wasn't awkward silence but rather comfortable silence, at least on Frisk's side. [Name] was too busy being caught up in their mind which made the tensions in the air grow thick in their side.

[Name]'s only happy because Frisk and Chara are finally happy.

"Hey [Name]. Look at this," Frisk called out to them, snapping them out of their trance. They turned over only to have a piece of paper being shoved right in front of their face. "Isn't it cool? Maybe we could impress XGaster if we made him!"

[Name] removed the paper from the face to observe it at a respectful distance, taking a closer look of what Frisk gave them. It appeared to be a bunch of codes that never made it.

'Napstablook. . . Mad Dummy. . . Mettaton. . .'

It seems that Frisk wanted to bring one of these forgotten codes to life. And it did capture their interest but. . . What if XGaster does something about it?

"Are you sure. . . ?" [Name] hesitantly questioned their brother, who had a huge smile on his face. "What if XGaster doesn't like it. . . ?"

Frisk froze. Right, he kind of forgot about it. But to stop himself from having any bad thoughts, he replied, "Then we have to make a good first impression!" [Name] placed a finger under their chin in thought as Frisk continued. "And maybe you can make one so XGaster may be proud of you, as well!"

[Name] shrugged, knowing that they couldn't stop Frisk even if they tried. He was too determined for his own good. "It's worth a shot, I guess. . ."

‹―💜―›

Entry Number 0. Timeline Number 8.

Frisk smiled up towards someone who had just awoken from their eternal slumber. Frisk was absolutely beaming with joy while he shoved a recently made heart locket inside the pocket of his shorts.

The X-EVENT has made its first creation.

A robot with dark hair started with curious eyes to the child in front of him, his eyes flicking from the boy's own eyes to his heart locket.

"Welcome to life, Mettaton! I'm your creator," Frisk happily greeted his creation with a smile.

"HELLO. MY BODY FEELS WEIRD. . ." Mettaton spoke with a rather pleasing robotic voice as he felt that he was missing something. Frisk awkwardly scratched his chin while responding to him, "Yeah, sorry about that. I don't know how to create arms and legs at all. . ."

"Alphys is helping me with that while [Name] is making a friend for you," Frisk explained while Mettaton turned his head to a nearby cable. "So, you'll be ready in a few hours-"

Suddenly, the robot began chewing on the cables.

"Hehehe, don't chew on the cables!" Frisk chuckled. But despite his small and harmless protests, Mettaton never stopped chewing the cables but at least put his attention back on him. "I need you to listen carefully."

Alphys was observing through the various notes and codes while Frisk was talking to Mettaton. "XGaster has high expectations of us. We're gonna make a first good impression, okay?" Frisk stood up on his tippy toes while explaining more to Mettaton. "We will show him our creations can be perfect the way they are- STOP EATING MY HEART LOCKET! [NAME] MADE THAT FOR ME!"

Alphys jumped at Frisk's sudden voice, turning over to see Mettaton chewing on Frisk's heart locket somehow. Mettaton was happily chewing on his heart locket while Frisk tried to pull away with a heavy pout. "Robots are not supposed to have an appetite!"

"What the fuck just happened?"

[Name] just came while dragging a small robotic dummy from behind. The dummy seemed to be struggling under their grasp while [Name] walked towards Frisk and Mettaton. Noticing someone new, Mettaton let go of Frisk's heart locket much to his dismay.

"LET GO OF ME, YOU PATHETIC PIECE OF-" The robotic dummy's voice was cut off by [Name]'s own.

"HEY! SHUT IT! DO YOU REMEMBER THAT I CREATED YOUR STUPID BODY!" [Name] yelled back at the dummy with an irk mark appearing on their face, growing annoyed by their own creation. "BE GRATEFUL THAT FRISK MANAGED TO BRING YOU BACK OR ELSE YOU WOULD BE NOTHING BUT A PATHETIC LITTLE GHOST WHO DOESN'T KNOW HOW TO DO SH-"

"How about we all calm down!?" Frisk tried to prevent the two from fighting any longer but was relieved to see that his dear sibling was slowly coming back and showing emotions again. He laughed a bit while remembering when [Name] asked him to bring someone from a past timeline.

"I remember seeing a ghost fly out of a dummy when we were training with Undyne. . . And I gotta say, that caught my interest."

[Name] was quick to flick the switch from behind the dummy, making their power go out.

"Sorry about that. . ." [Name] apologized for this inconvenience, with Frisk giving them a thumbs up as his way of telling them that it's a-okay! "It's just that. . . they're a handful. . ."

And soon, Frisk, [Name], and Alphys began working on the two robots.

Frisk and [Name] drew many possible models for their creations, with Frisk making many while [Name] only stuck with one of their designs since they grew lazy over the process (also since they were inspired to make a design similar to character from a show that they caught Alphys watching in secret). Frisk showed Alphys each of the drawings as she adjusted her glasses with one hand while the other held Frisk's many drawings.

The duo managed to complete their creations with the huge help from Alphys. Mettaton stood there, looking absolutely fabulous! While the angry dummy. . .

They were now a giant cat-girl robot. The robot now had sleek purple hair with cat ears, along with giant bells as their earrings. They're whole body kept its robot-like design as a mini dress while their hands appeared like fluffy cat paws.

Mad Mew Mew is what they proudly called themselves. Along with going by they/them pronouns.

(Yes, they are canonically non-binary)

After introducing them to what they called their world, the human duo taught them many different kinds of things.

Frisk held up a stick with a determined smile, making Mettaton mimic that action with a lightsaber that Frisk had gifted him (made by Alphys, of course). And from the distance, [Name] somehow managed to instal a fucking machine gun on one of Mad Mew Mew's hands, replacing their soft paw with a heavy machine gun. Mad Mew Mew smirked in delight before getting a hard smack in the head by [Name], who hurt themselves in the process.

As more time passed, Frisk decided to give dance lessons to Mettaton and Mad Mew Mew. Alphys and [Name] watched with blank expressions as Frisk lifted his feet with the help of a log that was stabilizing him. He watched with a surprised yet nervous expression as he saw Mettaton replicate his movement with ease and grace while Mad Mew Mew ran away to destroy a tree.

After a while, the two robots went on low battery (despite one literally being possessed by a ghost). Frisk used [Name] as a stool, with them carrying Frisk by their legs, as he started drawing on Mettaton. [Name] didn't hesitate to make him draw on Mad Mew Mew, making him add a couple of whiskers on their face. Alphys cleared her throat, making them face her with an awkward chuckle as she handed them the double A batteries that the two robots needed.

As the two robots regained their power, Mettaton somehow managed to revert to a box state with a wheel. Frisk rode on top of him (GET YOUR MIND OUT OF THE FUCKING GUTTER) as Mettaton was speeding away while [Name] sat on Mad Mew Mew's shoulder, with them suddenly not stopping them from doing so. The two non-binary icons (sorry if you replace they/them with your own pronouns but it's completely fine) watched alongside Alphys as Mettaton threw some papers away into the air, with some landing on the three watching.

Frisk and Mettaton soon came back after a while. But during their time gone, Mad Mew Mew and [Name] had enough time to create cat headbands for everyone (besides Mew Mew since they are already a cat-person/robot???). While Frisk and Mettaton put their own Mad Mew Mew themed headbands, [Name] managed to slip one on Alphys' head.

She wasn't complaining, though.

Mettaton stretched his arms wide to envelope everyone into a group hug.

Once he let go, [Name] and Frisk dug into their pockets to hand their brown creations something special.

"[Name] made these themselves! Each was designed to match your style!" Frisk beamed while [Name] awkwardly scratched their neck.

"BUT. . . THEY LOOK THE SAME. . . ?" Mettaton reached for the heart locket that Frisk handed him, taking a closer look at it. Mad Mew Mew nodded in response, wondering how these could be designed for a certain someone if they look exactly the same.

"Just. . . turn the cylinder that's behind the heart locket," [Name] told them, kind of growing tired of telling everyone how it works.

The two did just that. But Mettaton, having a growing appetite, decided to attempt eating the heart locket. Frisk tried to pull it out of his mouth while Mad Mew Mew turned the cylinder.

  Mad Mew Mew has unlocked a new emotion.

"I. . . Thank you. . ." Mad Mew Mew muttered to their creator, who made a small smile while placing a hand over their ear in a slight teasing way. "What did you say?" [Name] asked, wanting to hear those words come out of the cat robot again.

"I SAID THANK YOU!"

Mettaton soon got the hang of it.

or!

‹―💜―›

". . . Mettaton and Mad Mew Mew. . . ?"

XGaster looked at the two robots with haze under his glasses, making the human duo wonder what he could be thinking right now. After all, his eyes are the key to knowing how this man felt. It was all futile to know whether or not they succeeded since his glasses hide the source of the emotion.

[Name] nervously gulped while Frisk scratched his neck. "Yes! We used some of the data compilation," Frisk told XGaster while sitting on Mettaton's shoulder, with [Name] sitting on Mad Mew Mew's shoulders as well. Only in a piggyback like manner while kicking their feet gently.

Mad Mew Mew somehow grew used to this.

"Mettaton likes to dance, eat all the time. . ."

"And Mew Mew likes to cause chaos and create some things for cosplays. . . while also listening to their music box from time to time. . ."

"Oh! And his saber can cut through anything!"

"And they have a machine gun for some reason. . ."

XGaster's eyes widened while Mettaton's lightsaber almost hit his face. "Weapons? Why?"

"Because they are our friends. . . And also, our guardians!" Frisk grinned while hugging the side of Mettaton's face. [Name] sweatdropped while patting Mad Mew Mew's head while they grumbled in response.

"And why would you two need guardians?" XGaster asked, raising a brow. This made Frisk grow nervous, with [Name] hoping that things don't turn for the worst (again). "I. . . don't know. . . I just thought it would be cool," Frisk muttered softly, his lips beginning to quiver as he grew more afraid of the possibilities that may occur.

XGaster kept his raised brow while rubbing his chin, thinking deeply about this while observing the two robots in front of him. He sighed as he lowered his hand, beginning to talk to the two (mainly Frisk). "Not bad for your first attempt, experiment. . . [Name]. . ." This made the two perk their heads up in slightly delight. Frisk smiled at Mettaton who still held a blank face, confused by all of this, while [Name] hugged Mad Mew Mew's head, making them stretch their arms to put them down back onto the floor. [Name] chuckled at this act, possibly knowing that Mad Mew Mew secretly liked it.

"Now destroy them."

XGaster gave the four the high heel (WHY DOES MY BROTHER HAVE TO USE MY SWITCH JUST WHEN I ACTUALLY NEEDED TO PLAY UNDERTALE) as he walked away from them. Frisk's eyes snapped wide open while [Name] told Mad Mew Mew to crouch down, hugging them close to them as they grew fearful all over again.

"Wh-What!? But you just said-" XGaster raised a hand to stop Frisk from further continuing what he had to say.

"I TOLERATE your foolish ideas. Those creations. . . are hideous," XGaster addressed while giving them a side eye. "I am the one in charge. I decide what is useful and what is not." Frisk hopped down from Mettaton's shoulder while he was on the verge of crying (like a baby). "You will be able to keep your creations once your training is complete."

"I don't understand. . . What did we do wrong?" Frisk's voice slightly cracked as he asked XGaster for answers in the politest way he could do so.

"Hurry up. We still have more work to do."

Frisk stood still with his head low while [Name] walked over to him to side hug him. They, too, were upset at the fact that XGaster is practically forcing him to destroy their friends. But the two raised their heads to see XGaster create a spike from his hand, [Name] holding Frisk's hand in a protective manner as he jumped.

"If you can't do it, then I will."

"NO, WAIT! GIVE THEM A SECOND CHANCE, PLEASE!" Frisk begged XGaster as he rushed over to grab his hand. Mettaton looked ever so slightly upwards to see Frisk begging XGaster to spare him and Mad Mew Mew. Mew Mew could only grow more angered at the man in front of them, fully understanding this situation. "WHY DOES IT ALWAYS HAVE TO END UP LIKE THIS!?"

"Welcome to lesson number two. Evolution requires sacrifice," XGaster smirked. But it fell once Frisk began yelling.

"STOP IT! WHY DO YOU ALWAYS BELITTLE MY EFFORTS!?" [Name] jumped back, looking towards their two friends. Mettaton suddenly was crying tears made of oil while Mad Mew Mew gritted their teeth. [Name] did nothing to stop Mad Mew Mew from calming down. In fact, [Name] looked at them in the eyes.

'Go do it, you amazing fool.'

Frisk heavily pulled his hair as he continued shouting.

"WE'RE TIRED!"

[Name] didn't hesitate to move away from their robot friends, sending them the cue to attack XGaster. Mettaton jumped in and used his slight saber to cut off XGaster's arm, making [Name] smirk in delight. Mad Mew Mew appeared in front of XGaster to aim their machine gun at him, making them fire multiple bullets towards him. XGaster watched with wide eyes before he teleported away from the two, stabbing each of them with multiple spikes from his hands.

That didn't stop these two, however.

Mettaton extended his arm to grab XGaster by the neck while Mad Mew Mew extended their neck to appear behind XGaster, sending him many swears as they prepared to use the machine gun again. Mettaton sent XGaster back at him as his soul appeared in front of him. The color eyes of the two robots became exactly like Frisk's, or should I say Chara's, as the two screeched at XGaster, both in front and behind him.

"WE'RE TIRED OF YOU."

Frisk watches with wide eyes and an open mouth as his tears keep on spilling. On the other hand, [Name] was grinning widely.

XGaster watches the two as his face begins to fade into an unamused one.

ZAP!

XGaster closed one eye to prevent oil from getting into his eyes. Mettaton's hand loosened while Mad Mew Mew's machine gun slowly died out. The two humans watched with wide eyes, as [Name]'s face dramatically fell, as two purple spears were sent right through each of their friend's heads. Another spear managed to slice Mad Mew Mew's neck, making their head tumble over to the ground.

Alphys stood as she held a piece of a timeline code, bringing a disoriented looking Undyne to throw spears right at the robots.

Frisk fell onto his butt as he curled into a ball, covering his head with his arms as [Name] crouched to comfort them quickly. [Name]'s face fell into a