I'll Make Them Whole

by APStories

Rating: mature
Tags: Horror, Profanity, Discord, Violence, Crossover, Mario, Human, Main 6, Gore, My Little Pony: Friendship is Magic, Death, My Little Pony Comic, Other, Original Character, Mystery, Science Fiction, Suicide / Self Harm
Length: 6196

Isaac Clarke crash-lands in Equestria and unknowingly unleashes death.

When Isaac Clarke crash-lands in Equestria, he unknowingly unleashes a violent Necromorph upon Equestria, killing the Mane Six and Spike, but Applejack and Rainbow Dash remain. They, alongside Isaac's stowaways Mario, SMG4, and SMG3, must team up with Isaac in order to stop the horde of undead that want them gone, but someone else wants the six heroes dead... but who?

Named after the song by DAGames and inspired by the Dead Space 2023 remake.

This story takes place before the events of SMG4... Are You Ok?, and thus, takes place before SMG4's dive into insanity.

Published 2023-03-01 21:50:01 UTC
Last updated 2024-08-12 21:10:31 UTC

Chapter 1: New Arrivals

Isaac, it's me. I wish I could talk to you. I'm sorry. I'm sorry about everything. I wish I could just talk to someone. It's all falling apart here. I can't believe what's happening... It's strange... such a little thing...

That was Nicole's last message to me. I managed to survive the USG Ishimura, but I crash-landed on a planet. I managed to get my ship working again, but I crash-landed somewhere else far more mysterious. A world full of ponies. Six ponies and one dragon greeted me. However, three entities from my previous location stowed away in my ship. A red-clad plumber and two aliens clad in blue. However, it seemed I didn't finish off every Necromorph. One stowed away and attacked the pink pony pony. The red man decapitated the Necromorph with a single punch, killing it instantly, but by then, it was too late. The infected pony began a new wave of horror, brutally murdering the purple winged unicorn, the yellow winged pony, the dragon, and the white unicorn. The two remaining ponies, an orange pony and a rainbow-maned winged pony, grabbed my three stowaways and ran. With no other choice, I followed them, hoping to help.

Inside the Sweet Apple Acres house, Applejack, Rainbow Dash, Mario, SMG4, and SMG3 managed to kill Applejack's infected family. They retreated into Applejack's bedroom.

"Goddamn it, Mario! Why did you bring us here?!", SMG4 angrily asked the plumber.

"I thought it would be fun", Mario replied while cross-eyed.

"You do know that if you die, we die too?!", SMG4 responded.

"I've already died twice, once from swallowing a Bob-Omb, and once from you luring me into lava, and last I checked, you and the virgin are still alive!", Mario angrily replied.

"What did you call me?", SMG3 asked as Mario and SMG4 began duking it out. SMG4 eventually got the plumber in a headlock when the Pinkie Pie Necromorph broke through the door. Mario broke free of the headlock and ripped the monster's head off, killing it and spilling blood on the floor. However, three winged Necromorphs burst through the walls, one of them sporting an extra arm protruding from its head.

"Twilight... Fluttershy... Spike...", Applejack said in horror as she saw what had become of the three former heroes on harmony. To make matters worse, another Necromorph with an arm protruding from its head entered the room through the hole in the wall where the door once was.

"Rarity...", Rainbow Dash said as the four Necromorphs surrounded the five heroes, ready to strike at a moment's notice.

"Oh, fuck this", Mario said as he leaped onto the Twilight Necromorph and began pulling on the extra arm. "Come on! Come on!" Unbeknownst to the plumber, the other three Necromorphs began attacking the other survivors. However, the wails from the Twilight Necromorph encouraged the two other winged Necromorphs to surround the plumber. "Hmmm? Oooooooooooh... fuck." However, a bullet hit the Fluttershy Necromorph, who turned around to find SMG4 with a Glock 17. SMG4 shot his remaining bullets at the wings of the airborne Necromorphs, which caused them to grab onto the edge of the hole and gave Mario a safe landing. He proceeded to yank on the Twilight Necromorph's head-arm, which caused the Twilight Necromorph's head to rip off, killing the former leader of the Elements of Harmony once and for all as the body fell to the ground outside. This enraged the Spike Necromorph as it climbed into the bedroom, the Fluttershy Necromorph following suit. "Two down, three to go!"

"Ah, crap! I'm out of bullets!", SMG4 said.

"Mario! The girls!", SMG3 shouted as he pointed to Applejack and Rainbow Dash huddled together as the Rarity Necromorph advanced toward them. Mario ran to the married couple and grabbed the Rarity Necromorph's head-arm, yanking on it with all his might, which caused the Rarity Necromorph's head to rip off, killing it instantly.

"Alright, who's next?", Mario asked as the two remaining Necromorphs began lurking towards the fat plumber. "Ah!" He grabbed a pillow. "Stand back! I'm warning ya!" However, the Spike Necromorph grabbed the fat Italian and opened wide. "NOOOO!!! MARIO DOESN'T WANT TO BE EATEN!!!" Mario causes his nose to elongate, hitting the Spike Necromorph in the left eye. It screamed in pain as Mario freed himself and tossed something into the monster's mouth, which caused it to implode and die. However, unbeknownst to the plumber, Rainbow Dash's wings were ripped off of her. The last remaining Necromorph, the Fluttershy Necromorph, devoured the wings, sprouting a fresh pair and discarding the destroyed pair as Rainbow Dash, critically injured but uninfected, screamed bloody murder. The Fluttershy Necromorph took flight as infected animals crawled into the bedroom from every hole possible. The married couple grabbed each other, crashed their lips together, and squeezed their eyes shut, bracing for their impending doom. Mario, however, ate a Fire Flower and decapitated the Fluttershy Necromorph with a single punch, killing it instantly, and began to throw several fireballs.

I ran into the house to find two Necromorph corpses, dozens of dead animals, and blood and gore splattered everywhere. The two remaining ponies were making out, the rainbow-maned one now wingless, the red-clad man now wearing white and sporting fireballs from his hands, and the two aliens stomping on the decapitated corpse of a winged Necromorph. Yeah. It sounds crazy. The red man switched back into his normal clothes.

"Ahem!", Isaac Clarke said as the five survivors looked in his direction. Blood was pouring out of Rainbow Dash's injuries.

"My wife, she's injured. Please. Help us", Applejack said.

"Ha! GAAAAAAAAAAAAAAAAY!", Mario shouted, only to get punched in the face by SMG4.

"Look, man, we're sorry we stowed away on your ship. This fat idiot thought it would be fun", SMG4 said.

"Who are you guys?", Isaac asked.

"I'm Rainbow Dash, and my wife is Applejack", Rainbow Dash said.

"I'm SMG3. The guy who looks like me is SMG4, and the plumber is Mario", SMG3 added.

"Alright. My name is Isaac. First things first, let's get Rainbow Dash patched up", Isaac said.

Chapter 2: Intensive Care

I blamed her. I blamed her for their deaths. Oh, how wrong I was. But it's too late to fix it. Nicole is dead.

The survivors made it to the Ponyville Hospital, but dozens of pony Necromorphs were surrounding the area, with dozens more inside. "Oh, shit. I don't have my weapons", Isaac said.

"It's time to kick ass and chew bubblegum... and I'm all out of gum. STEALTH IS OPTIONAL!!!", Mario bellowed as he ran towards the monsters with a flamethrower he pulled out of his hat. What Mario didn't calculate was the sheer number of pony Necromorphs. "The risk I took was calculated... but man, am I bad at math." With nowhere to run, Mario incinerated a few pony Necromorphs, critically injuring them, but not killing them. "Hey, Doomguy! Help me out here!" Isaac managed to find his Plasma Cutter, but the beams were stuck in place when he activated it. "A lightsaber?! How the fuck is that going to help us?" The Plasma Cutter, however, exceeded Mario's expectations. This wasn't a lightsaber. It was three lightsabers according to Mario. Isaac slayed the immolated monsters. "Hey! Can I have it?" Mario was then knocked out by SMG4.

"Idiot", SMG4 said. He picked up Mario as Isaac continued his onslaught, paving a way for the survivors. Mario came to and began punching SMG4, who traded blows with the plumber as they rolled inside.

"Are they always like this?", Applejack asked.

"Normally on Wednesdays and Saturdays... OH, FUCK! SMG4, LOOK OUT! MARIO'S INFECTED!", SMG3 answered and screamed as a bite mark from the Spike Necromorph was shown on the plumber's neck. Isaac leaped inside and decapitated the plumber... or so he thought. He noticed that Mario... is really, REALLY fat. Mario viciously attacked Isaac, but Mario's head suddenly exploded. A punch from SMG4 caused that. A 1-UP mushroom allowed Mario to be revived uninfected.

"I have two left", SMG4 said. A horde of pony Necromorphs began to converge on the survivors. Isaac gave the aliens and Mario Plasma Cutters of their own, but the beams were stuck in place when activated, like Isaac's.

"What the hell?", Mario asked himself as he, SMG4, SMG3, and Isaac began slaying the monsters. Suddenly, Applejack began groaning. She and Rainbow Dash made it to a hospital bed where Rainbow Dash patched herself up with a pair of mechanical wings coated in a light blue paint.

"Sweet!", Rainbow Dash said. She lost a decent amount of blood, but she was fine. However, the wingless Pegasus heard a baby crying. "Huh?" She saw her wife holding a baby orange earth pony with emerald eyes and a rainbow mane and tail. "Wait. You were pregnant?!" A flabbergasted Rainbow Dash looked at their new daughter. There was no denying it. After a DNA test, it was revealed that the baby was Applejack and Rainbow Dash's daughter. "Hope. That should be her name. If we die, she might be ponykind's last hope." The other four survivors ran into the room to find the new family. Suddenly, Mario screamed at the sight of Nurse Redheart, who had committed suicide. Hope laughed at the screaming Italian, who flipped off the foal. "It was a cryptic pregnancy." Isaac Clarke began to sing.

Twinkle, twinkle, little star, how I wonder what you are. Up above the world so high, like a diamond in the sky... Twinkle twinkle little star, oh how I wonder what you are... When the blazing sun is gone, when the nothing shines upon. Then you show your little light, twinkle, twinkle, all the night... Then the traveler in the dark, thanks you for your little spark. He could not see which way to go, if you did not twinkle so... When the blazing sun is gone, when the nothing shines upon. Though I know not what you are, twinkle, twinkle, little star...

I remember that lullaby. It was a song Nicole used to sing from time to time.

"My ears are burning!", Mario said as Isaac laughed hysterically. His singing voice? Not the best.

"Metal wings. Interesting", Isaac said. "Now... let's get out of this horror hospital." Suddenly, a roar shook the survivors. Nurse Redheart had turned into a gargantuan Necromorph. Multiple arms protruded from its sides, ten on each side, resulting in a total of twenty arms and four legs. "OH, FUCK ME! RUN FOR YOUR FUCKING LIVES!!!" The other survivors ran for it, with SMG4 carrying Hope. The Redheart Necromorph had its sights set on the newborn. It began breaking chunks off the walls and threw them at the YouTuber carrying the baby. Suddenly, the chunks were cut clean in half by Isaac, who faced the monster. "HEY, FUCKFACE! WHY DON'T YOU PICK ON SOMETHING THAT CAN GIVE YOU A CHALLENGE?!" He sliced off one of the arms, but two more sprouted out from its stump.

"Isaac, no! This is a really bad idea!", Applejack yelled.

"STICK AROUND, SISTER! I'M FILLED TO THE BRIM WITH BAD IDEAS!!!", Isaac replied as he used his Plasma Cutter to cause a cave-in, trapping the Redheart Necromorph. "I SAID RUN FOR YOUR FUCKING LIVES!!!" He decapitated the Redheart Necromorph, supposedly killing it. He followed the other survivors out of the hospital as the building collapsed... and the Redheart Necromorph, now bigger than ever, emerged after absorbing the rubble and healing itself. It roared into the air. "WHAT THE FUCK?!" Suddenly, a cap flew onto the monster... and it immediately grew a mustache. Mario had captured the monster. "Uh... what?"

"Imma going to die for you", Mario said as he walked over to a volcano and jumped into it, but before he could touch the lava, he de-captured Redheart Necromorph and caused it to fall into the volcano, completely incinerating and destroying Redheart Necromorph once and for all. The other survivors arrived at the volcano.

"We need to get the fuck out of Ponyville", Isaac said. SMG3 took a Ugandan Knuckles out from his hat and he and SMG4 turned into meme energy and used it on Mario, turning the plumber into the Giant Mario Head.

"Get ready to move your pingas!", Mario said.

Chapter 3: Course Correction

This doesn't make sense. I killed every single Necromorph I came across. So how was there another Necromorph stowed away on my ship? I need answers. It can't be Kendra. I saw her die before my eyes. I also killed the Hive Mind which killed her. I'm sure of it.

"Uh, okay! This will do!", SMG4 said.

"Well, this feels familiar", SMG3 replied.

"That's... not a ship, though. That's just Mario's head. How do you expect us to... oh, you're going inside of his mouth", Isaac said. With no other choice, he followed the other survivors into Mario's mouth. "Now what?"

"Imma going to fly for you", Mario said as he took off, making airplane noises.

"So, what exactly are we looking for?", Applejack asked Isaac.

"A Hive Mind. It's a massive worm-like creature", Isaac answered.

"Hive Mind? Then the Changeling Kingdom is our next stop", Rainbow Dash said.

"Wait... where am I going?", Mario asked. Rainbow Dash flew out of Mario's nose and saw that he was headed in the wrong direction.

"Well, not in this direction", Rainbow Dash answered. She turned Mario around to make him face the direction of the Changeling Kingdom.

"Okie-dokie...", Mario said as Rainbow Dash flew back inside Mario's head. The plumber headed towards the Changeling Kingdom.

"What are changelings in this world?", Isaac asked.

"Basically bug horses", Applejack answered.

It's the best lead I've got. Necromorphs aren't bugs, but some bugs do have a hive mind. It makes sense logically. Maybe I can find some clues.

At the Changeling Kingdom, the survivors landed on the outskirts of the kingdom as Mario reverted back to normal. A changeling Necromorph lunged at them, but Isaac killed with his Plasma Cutter. "Well, there's Necromorphs here", Isaac said as he saw the castle coated with blood. The survivors all saw a larger Necromorph patrolling the castle. Applejack gave Hope to Mario.

"Keep her safe, will ya? SMG4 told me you've babysat before", Applejack asked as she, Isaac, Rainbow Dash, and the Super Meme Guardians ran towards the castle. Hope looked at the plumber and laughed because of how stupid Mario looked in her eyes.

"Shut the fuck up!", Mario complained.

Just as I thought. Bigger Changeling Necromorphs means different ranks on the monarchy ladder, just like in an actual hive.

The patrolling Necromorph, who was actually the Pharynx Necromorph, saw the five survivors running and transformed into a deformed flying spider-like monster. The flying spider-like monster Pharynx Necromorph roared as it shot a web at the survivors, but Isaac cut the web with his Plasma Cutter and leaped onto the flying spider-like monster Pharynx Necromorph. "Hey, ugly! Where's your monarch?!", Isaac tauntingly asked as it was revealed that the flying spider-like monster Pharynx Necromorph's roar was actually a summoning call as several Changeling Necromorphs began attacking Isaac. However, the Meme Guardians used their Plasma Cutters to take on the horde as Isaac continued fighting the flying spider-like monster Pharynx Necromorph. "Come on, man! Just tell me!" He eventually decapitated the flying spider-like monster Pharynx Necromorph as the Meme Guardians finished off the horde. "Ah, well. Why didn't you two do anything?" He pointed to the lesbian couple.

"Our abilities won't work here", Applejack replied.

"It's how the Changelings defend themselves", Rainbow Dash added as the survivors entered the castle, hacking and slashing their way through the Changeling Necromorphs. They eventually made it to the throne room, where a massive army of Changeling Necromorphs awaited. Isaac and the Meme Guardians all activated their Plasma Cutters and assumed battle stances.

"I assume we've found where the monarch resides", Isaac said as the army converged on the survivors. "Remember: decapitation!" However, a rumbling was felt by the survivors as a massive Nexus arm emerged from the ground. "HOLY SHIT!!! RUN!!!" The survivors ran for their lives as the Nexus destroyed the castle and its inhabitants. Applejack looked behind her to see a familiar shade of green on the arm chasing them.

"Thorax?!", Applejack asked as she and the survivors escaped the castle and the Thorax Nexus roared into the sky. It was so massive Mario could see it.

"That's a huge bitch!", Mario commented as the Thorax Nexus looked down at the other five survivors. However, it heard Mario's comment as saw the plumber holding the baby.

"OH, NO, YOU DON'T!!!", Rainbow Dash screamed as she rammed into the monster, which did absolutely no damage. The Thorax Nexus grabbed the Pegasus and devoured her as it continued towards the plumber.

"NO!", Applejack screamed as she ran after the monster. However, she was too late as the Thorax Nexus grabbed Mario and Hope.

"You're ugly", Mario said. Offended, the Thorax Nexus roared. However, Isaac attacked the Thorax Nexus with his Plasma Cutter as he climbed onto the monster's head.

"YEE-HAW!", Isaac screamed as he cut into the Thorax Nexus's ultra-tough skin. However, the Plasma Cutter was weak against the Thorax Nexus, so the Thorax Nexus grabbed Isaac and tossed him aside. "Ow." Applejack watched in horror as the Thorax Nexus devoured Mario and Hope. Her daughter and wife, both dead. She grabbed Isaac's Plasma Cutter and stabbed herself in the heart, killing herself. "Oh, there it is." Isaac grabbed his Plasma Cutter as SMG4 used a 1-UP Mushroom to revive Applejack.

"Huh. I didn't think that would work", SMG3 said.

"I have one left", SMG4 responded. Suddenly, the Thorax Nexus exploded as a gargantuan Mario leaped into the air and reverted back to his original size, performing a superhero landing with a deceased Rainbow Dash in his arms. "Oh, right! He had a Mega Mushroom!" Hope emerged from under Mario's hat as SMG4 used his final 1-UP Mushroom to revive Rainbow Dash. "The little one needs both of her mommies. However, that was my last 1-UP Mushroom. If we die, there's no going back now."

"Well... I guess we just have to stay alive, right?", Isaac asked. "I'm a master at staying alive. Let's end this invasion... together." The survivors left the Changeling Kingdom, unaware of what they just unleashed by killing the Thorax Nexus as a moon with a familiar angry face appeared in the atmosphere above the decimated castle.

Chapter 4: Obliteration Imminent

As the six heroes exited the Changeling Kingdom, the moon began to hone in on them. Mario sensed it, and he looked upwards, but it was too late. The massive explosion was heard by several Necromorphs, willing to feast on some ponies.

Oh, crap. That moon came out of nowhere. That was definitely loud enough for Necromorphs to hear. Time to fight.

The Necromorphs tried to bite into Mario, seeing as how he had the most meat on his bones, but... they couldn't. Mario was FAR too fat to get bitten. His neck is the only part of him that's not so fat. "Uh... is this supposed to hurt?", Mario asked. However, one Necromorph bit Mario so deeply, it began to catch fire. The Necromorph ran around in a wild frenzy, accidentally incinerating its Necromorph brethren. What followed was a hilarious carnage of Necromorphs getting incinerated left and right. Mario laughed at the "stupid aliens", not remembering that they were once ponies and other Equestrian creatures.

"Well... good job, Mario", SMG4 said.

"I am in incredible pain!", Mario said jovially.

Meanwhile, SMG3 was using the YouTube remote to literally erase several Necromorphs from existence itself. He then summoned a bunch of Ugandan Knuckles, which overwhelmed the Necromorphs. The Necromorphs might've been able to handle Isaac Clarke, but they weren't prepared for this. The Necromorphs whimpered and whined as Mario and SMG3 completely annihilated them. However, the Ugandan Knuckles army all got bitten, making them go feral. "Well, shit", SMG3 said in a monotone voice. He summoned OOF Buttons, which quickly disposed of the infected army by sending them to the Shadow Realm. The OOF Buttons retreated afterwards. However, unbelievable devastation still surrounded the six heroes. However, a rumbling was felt.

"Whoa! What was that?", Applejack asked. She got her answer VERY quickly as a giant monster burst from the ground.

"A Slug! Attack!", Isaac responded as he used his Plasma Cutter to slice into the monster's tentacles, to no avail. Mario used fireballs to try and incinerate the Slug, but it simply batted the fireballs away. SMG4 went Super Saiyan Blue and fired a Kamehameha, which actually did some damage... but he hit the monster's face instead of the tentacles. "You idiot! The tentacles are the weak point!" Mario went Super Saiyan 3 and fired a Kamehameha, and this time, one of the tentacles was destroyed, causing the monster to roar in pain. "Yeah, like that!" Rainbow Dash used her incredible speed to create a tornado which blinded the Slug, causing it to growl in confusion.

"Hey, ugly!", SMG3 shouted. He turned his Eggdog into a sword and sliced another tentacle off the monster, causing the monster to once again roar in pain.

"What is that thing, anyways?", Isaac asked.

"My pet", SMG3 responded. Applejack leaped onto the monster to try and lasso it to the ground, but a tentacle impaled her, causing her to scream in pain. The monster, however, got some karma as the tentacle Applejack was impaled on got sliced off... by a mustache. Mario caught his mustache as if it were a boomerang and put it back on his face. But it was too late. Applejack was dead.

"No... NOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO!", Rainbow Dash screamed as she picked up speed around the monster, making the tornado more intense. She then rammed into the monster, literally using her own body as a weapon to break off another tentacle.

"One more, guys!", Isaac shouted. He leaped onto the monster's last remaining tentacle and sliced it clean off.

"Now, Mario!", SMG4 shouted. Mario flew straight into the monster's mouth, and what followed was a gargantuan explosion of fire and guts as the Slug's dying screams echoed throughout the Changeling Kingdom.

Holy shit. I knew Mario was powerful, but I've never seen anything like this.

Mario stood in the center, body aglow with his blood boiling from within. Mario has set his blood on fire to destroy the Slug. "Anime", Mario said. He and SMG4 powered down. Unbeknownst to the duo, though, Rainbow Dash was mourning over Applejack... who had transformed into a Necromorph. The Applejack Necromorph sprouted eight additional legs from its sides.

"No... I can't...", Rainbow Dash cried. She held out Hope in front of her. "Look at her! Please try to remember!" Tears streamed down Rainbow Dash's eyes as she attempted to make the Applejack Necromorph remember, but all the monster did was stab the left wing, forgetting that Rainbow Dash now had mechanical wings. The Applejack Necromorph, realizing that it fucked up, tried to remove its leg from the wing, but it didn't work. However, Rainbow Dash then did the unthinkable. She grabbed another leg and used it to stab herself in the neck. She tossed Hope to Mario. With one last smile, she blitzed around all of Equestria at an impossible speed in a straight line, causing her flesh to peel away, while at the same time, the Applejack Necromorph began to die alongside Rainbow Dash. "I love you so much, Applejack. We deserve to be together... even if it's not on this plane of existence." Rainbow Dash then launched herself and the Applejack Necromorph beyond the stratosphere and straight into the Sun, and both the Applejack Necromorph and Rainbow Dash screamed in pain as Rainbow Dash slowly started to transform into a Necromorph. Her screams of pain became muffled as the flames engulfed her, not realizing that the mechanical wings were actually creating armor that not only protected her from the Sun, but also reversed her transformation. The Applejack Necromorph, however, wasn't so lucky. The Applejack Necromorph was fully obliterated thanks to the heat of the Sun.

Back on Equestria, Rainbow Dash, now in full body armor, landed on the ground, leaving a giant crater in her wake. The armor deactivated. "Wait, I'm not dead?", Rainbow Dash asked.

"Those wings of yours... I think when one of them was stabbed, it activated a defense mechanism", Isaac said.

"No... I was supposed to die... with Applejack...", Rainbow Dash said as she sobbed quietly.

Chapter 5: Lethal Devotion

Crap. This isn't good. We lost one of our own. Why does this always happen?

The heroes watched as Rainbow Dash flew off. "Rainbow pony, wait!", Mario shouted.

"Mario... we should give her some space", SMG4 said. However, Mario gave Hope to SMG3 and ran after Rainbow Dash. "Ugh, idiot..."

"Mario is doing the right thing here. We need to stick together. If Rainbow Dash is found, then we're all done for", Isaac said.

"Have you met Mario? His brain is literally short-circuited", SMG4 replied.

"And who's fault is that?", SMG3 asked mockingly.

"Shut up, 3. Now's not the time", SMG4 retorted. "Work on babysitting the... whatever that is. I'm going after that fat Italian so he doesn't somehow get himself killed."

"I think his chances of survival are a LOT better than yours, alien", Isaac replied. However, SMG4 refused to listen as he stormed off after Mario.

Me and my big mouth...

Mario was busy tracking down Rainbow Dash when SMG4 grabbed the plumber and tried to drag him back to the Changeling Kingdom. "Come... on... Mario... you... fat...", SMG4 said as he strained himself pulling the fat Italian, who wouldn't move a muscle. He knocked SMG4 aside.

"I know what I'm doing, SMG4", Mario said as he continued forward. "YOU never lost anyone."

"Oh, and YOU have?", SMG4 snapped. Mario turned around and glared at SMG4. "You're an idiot, Mario. You don't think before you act. You don't consider the consequences of your actions..." SMG4 is interrupted by a vicious punch to the face.

"Last chance, SMG4", Mario said threateningly. "I'm not playing around anymore."

"Me neither", SMG4 replied. The two went Super Saiyan 3 and clashed, the sheer force of their blows causing waves of sound to echo throughout Equestria. The two were evenly matched, and neither one was backing down. "You can't win, Mario!" SMG4 went Super Saiyan Blue and landed a devastating combo on Mario, but the plumber was unaffected and pulled off a very iconic attack.

"KamehameHA!", Mario shouted as he unleashed a Kamehameha wave at SMG4, who was sent flying. Using the attack as a distraction, Mario flew off in the direction Rainbow Dash went as the force of the Kamehameha wave caused SMG4 to power down.

"Damn it, Mario...", SMG4 groaned.

Meanwhile, Mario managed to find Rainbow Dash. "Hey, rainbow pony!", Mario said. However, he was ignored. "Rainbow pony...?" Mario walked over to Rainbow Dash and saw her face. She had a look of sheer terror as she looked upwards. "Hmm?" Mario followed her gaze to find the remaining Princesses of Equestria- Celestia, Luna, Cadance, and Flurry Heart- had all been transformed into Necromorphs. "Uh-oh." The four princesses were all circling Mario and Rainbow Dash. The Flurry Heart Necromorph swooped down and lunged for Mario, but he stomped it into the ground, killing it instantly.

"You... you... you IDIOT!", Rainbow Dash yelled. "What... did you just... DO?!"

"I...", Mario began to speak before Rainbow Dash kicked him in the face. "Ow!" The confused plumber watched as Rainbow Dash walked back into the circle. "Wait... rainbow pony, don't! That baby needs you!"

"SHUT UP!", Rainbow Dash screamed. The armor from her mechanical wings surrounded her body and she lunged at Mario, who grabbed her and slammed her into the ground, knocking her out. He then faced the airborne Necromorphs. The trio of Necromorphs finally went on the offense and attacked Mario, who fought back with incredible power. Unbeknownst to Mario, however, the armor began to fuse itself to Rainbow Dash's body, tragically turning her into a mechanical monster. Meanwhile, Mario managed to kill the Cadance Necromorph.

"Two left...", Mario said as he leaped towards the Luna Necromorph and delivered a powerful punch. "You monsters are nothing..." Suddenly, the mechanical monster turned into liquid as it attached itself to the Luna Necromorph and the Celestia Necromorph, and the three monsters all combined to transform into a massive flaming mechanical two-headed Alicorn Necromorph, a horrifying amalgamation of the Celestia Necromorph, the Luna Necromorph, the mechanical monster Rainbow Dash had become, and the Applejack Necromorph, which was still alive within the armor and had fused itself with Rainbow Dash but was clearly still burning up after getting tossed into the sun earlier. "Oof, I hate that." Mario flew off, but the Meganecromorph took flight and gave chase. "I can't stop you down here... but maybe... up there..." Mario flew upwards and the Meganecromorph followed the Super Saiyan 3 plumber. "Like a moth to a flame... or me with spaghetti." Mario led the Meganecromorph into space, where the fire engulfing it burned out due to the freezing temperatures. The others watched from ground level.

"SWEET MERCIFUL CRAP!", SMG4 and SMG3 shouted in unison as Mario continued to lead the Meganecromorph away from the planet. He then pulled out a Mega Mushroom and devoured it, turning into a giant.

"Hi, how are ya?", Mario asked as the Meganecromorph stared him down. Mario began throwing massive punches at the Meganecromorph, causing it to scream in pain as the powered-up plumber unleashed his full power. However, the Meganecromorph began to pull the Sun and Moon towards Mario, who charged up one final attack. "Kaaaaaameeeeeeeeeeeee... haaaameeeeeeeeeeeeeeeee..." The sheer amount of power emanating from Mario caused the entire universe to shake as the two celestial bodies flew towards the giant powered-up plumber. "...HAAAAAAAAAAAAAAAAAAAAAAAAAAA!!!!!" Mario unleashed a giant Kamehameha wave, which completely destroyed the Sun and Moon, which caused a black hole to swallow up the Meganecromorph. The Kamehameha wave then destroyed the black hole, completely wiping out the Meganecromorph for good. Mario landed on the planet after powering down.

"Mario... what WAS that?", Isaac asked.

"I don't know... but it's no more now", Mario answered. Equestria was now bathed in darkness.

"What now?", SMG3 asked.

"We move on and hope we don't run into a Leviathan", Isaac answered. "The darkness is our ally. We'll be able to move easier."

"Is... is there anyone left?", SMG4 asked.

"I don't know. But we need to keep going. Hopefully... we'll find someone in this hellscape", Isaac answered as the group left the Changeling Kingdom.

"Wait! What am I supposed to do with the baby?!", SMG3 asked as Hope babbled.

"Take care of her, duh", Mario answered smugly.

Chapter 6: Environmental Hazard

Equestria was pitch black. No one, not even the Necromorphs, could see anything. And with the Mane Six and Spike all dead and the Princesses no more, Equestria was in a state of disrepair. However, someone was still unaware of everything that had been going on... until he decided to pay a visit.

Mario, SMG4, SMG3, and Isaac were determined to keep Hope safe at all costs. Everyone around them was a Necromorph. "This is all my fault", Isaac said. "Not Mario's. If I had ended my journey in your world, the Necromorph would've plagued it."

"Hey, man, we all make mistakes. It's what makes us human", SMG4 replied sympathetically. Suddenly, someone pulled the quintet of heroes aside. "What the..."

"Shhhhhh! Quiet", the stranger said. "I have a safe house... well, more like a safe universe." The stranger snapped his fingers and a portal opened up. He leaped into the portal with the quintet of heroes in his arms. The portal led to a chaotic realm.

"Oooooooooooo...", Mario said.

"HEY! Who the hell are you?!", SMG3 snapped.

"Who, me? Why, I'm the Spirit of Disharmony, the undisputed Lord of Chaos... DISCORD!", the stranger revealed.

"Who?", SMG3 replied.

"Shut up, 3. He saved us", SMG4 said. "Hi, I'm SMG4, a fellow... connoisseur in the world of chaos. The idiot with the goatee is SMG3, the mustached man is Mario, and the man in the space suit is Isaac Clarke. And that... is Hope." He points to the baby pony in SMG3's arms.

"Ah, yes. The offspring of Applejack and Rainbow Dash", Discord said.

"Are we... in space?", Isaac asked.

"Um... sort of? This is my realm. Welcome to Chaosville", Discord answered. "You should be safe here." However, a low rumbling was heard. "What was that?"

"Not what... who", Isaac replied. A massive Leviathan roared as it approached the group slowly. "Now we just need to figure out who this really is."

"Dis... cord...", the Leviathan uttered.

"Cosmos...", Discord replied.

"Oh. Crap", Isaac responded.

"Again, who?", SMG3 asked.

"Malice incarnate. She basically has the same powers as me", Discord answered. "I sealed her away in the stars." That was enough for SMG4 to finally snap.

"MARIOOOOOOOOOOOO!", SMG4 screamed. "Because of your little space battle, you freed a monster who might kill us all! If you hadn't have gone after Rainbow Dash, none of this would be happening! But, NO! You just HAD to be a giant fucking IDIOT! I am DONE! DONE!" SMG4 launches himself at Mario, who grabs SMG4 and throws him into a landmass. The duo clash with each other as Discord, SMG3, Hope, and Isaac face off against the Cosmos Leviathan.

"This should be fun...", Discord said as he hurls several landmasses at the Cosmos Leviathan, dealing some significant damage. "I defeated you once before, I can do it again!"

"Discord, deal as much damage as you can! Weaken that thing!", Isaac shouted as he used his Plasma Cutter to attack the Cosmos Leviathan. He leaped off of the landmasses Discord threw and managed to get the upper hand on the Cosmos Leviathan. "I've dealt with your kind before."

"Isaac, wait! She still has my powers!", Discord shouted as the Cosmos Leviathan began to use the power of chaos, transforming into a dragon.

"I... uh... wow. I hate that", Isaac said. As the Cosmos Leviathan went on the offensive, Isaac did battle with it. Meanwhile, Discord fled into his house to look for something.

"Come on, where is it?!", Discord asked himself as he frantically searched. Eventually, he found what he was looking for: Grogar's Bewitching Bell. "Bingo." He flew back into the battle and used the Bewitching Bell to drain the Cosmos Leviathan's chaos powers, transforming it back into a regular Leviathan. Discord then used the Bewitching Bell to transfer the Cosmos Leviathan's chaos powers to himself. "Let's finish this!" He transformed into a Leviathan himself and fought on equal footing with the Cosmos Leviathan. "The stars await your return, Cosmos. Now, Isaac!" Using SMG3's meme manipulation powers, Isaac turned his Plasma Cutter into a massive Plasma Cutter and sliced the Cosmos Leviathan into 16 massive pieces. Discord reverted back to his normal form and managed to seal almost all of the pieces into the stars of Chaosville. The Cosmos Leviathan's head, however, managed to slip away unnoticed.

"Whoa... that was... insane", SMG3 said. "Are you two okay?"

"Yeah, thanks to you", Isaac replied. "Hold on, where's Mario and SMG4?"

Meanwhile, Mario and SMG4 were fighting across Chaosville, hurling landmasses at each other and causing widespread destruction. "I've had ENOUGH of your stupidity, Mario! You're the reason for all of this! Hundreds of civilians dead because of YOU!!!", SMG4 yelled as he continued to attack Mario. However, Mario didn't say a word as he countered everything SMG4 threw at him. Eventually, SMG4 went Super Saiyan Blue and delivered a punch so hard it sent Mario flying into a landmass, cratering it. "It's OVER, Mario. You can't win. You don't even know my weakness."

"Yes... I... do", Mario managed to say as he stood up weakly. "I'M your weakness, SMG4. Remember? I'm your avatar. You can't survive without me." Mario glared at SMG4. "You kill me... you die. Our whole universe dies. But let me tell you something, SMG4. Sometimes... you REALLY piss me off." Mario pulled out an Invincibility Star, activating his invincibility power, and launched himself at SMG4, having finally gained the upper hand. "I'm sending you home, SMG4." Mario threw SMG4 into a nearby landmass and punched him through it, causing SMG4 to revert back to his original form. Unbeknownst to SMG4, however, a portal back to the Mushroom Kingdom was right behind him. With a powerful punch from Mario, SMG4 flew through the portal. When SMG4 realized what had just happened, however, it was too late.

"No. No! No-no-no-no-no-NO-NO-NO-NO-NOOOOOOO!!!", SMG4 screamed as he ran for the portal, but it closed in front of him, trapping him in the Mushroom Kingdom. "MARIOOOOOOOOOOOO!"

In Chaosville, Mario, now without his Invincibility Star powerup, joined up with Isaac, SMG3, Hope, and Discord. He then saw the damage caused as a result of the fight between him and SMG4. "Oooooooooooo...", Mario said.