*Downtown Los Santos, San Andreas; October 15, 2018; 9:30 PM*

"All clear! We can regroup at the main entrance!" Liss announced, destroying the last ammunition container.

The Ponies, Vanoss's crew, Kat, Liss, Weiss, Blake, and Skirmish had eventually reached the entrance where everyone had parked their vehicles.

"Okay... Let's see how Alex's team is doing.." Kat grabbed a tablet and pressed a button at the bottom of the screen.

"Andromeda, what's the situation?" Kat wondered.

"Scanning now.... It appears Arabus has been released moments ago. Alex, Ruby, Yang, and Inquisitors Ultimus Crux and Neopolitan are fighting off the spirit." Andromeda replied.

"We gotta help them..! They can't last forever!" Twilight urged.

"F**k that! We don't have our Avatars, and this motherf**ker absorbs people's souls!" Delirious yelled back.

"We have to try. Our friends need us!" Rainbow yelled.

"A massive Fall Knight resurgence has been detected retreating from the complex and seems to be headed straight back to retrieve ammunition." Andromeda announced.

"I have a plan..! Evan and his crew, Skirmish, Rarity, and I can stay here and deal with the Fall Knight threat. The rest of you can find a way there!" Liss decided.

"Rarity's coming with us!" Applejack screamed.

"If we all don't do what we're supposed to, one of these threats will wipe out the rest of us!" Kat realized.

"I'll do my duty. Celestia be with you, Twilight." Skirmish nodded, grabbing her spear.

"Come on, let's get over there..!" Twilight shouted as everyone crowded around Twilight.

Twilight, Applejack, Kat, Weiss, and Blake gathered around.

"Rainbow, what about you?" Twilight asked.

"I can get there in ten seconds flat, don't worry about me.. There's something I wanted to try.." Rainbow smirked knowingly.

"I trust you. Twi, get us over there, please." Kat ordered as the five teleported off.

Rainbow took a running start before flying towards the airport and circling around towards the hideout.

"Agent Liss, I'm detecting two cross-dimensional signatures." Andromeda told Liss.

"What about them?" Liss wondered.

"One of them, for sure, is the backup you requested... The other seems to be drawing in more energy... As if it's trying to move something in from another timeline..." Andromeda shakily replied.

*Meanwhile*

Alex dodged another of Arabus' blasts as Cade swept on from the side.

Cade slashed Arabus across the neck with his sickle before being forced out of the way by Neo, who blocked another of Arabus' attacks with her bladed umbrella.

As Neo blocked, Yang and Ultimus charged from either side and sent barrages towards the shadowy alicorn.

Ruby finally leaped in from above, firing multiple Ray-Gun shots and hacking the shadow apart, to no avail.

Arabus' horn suddenly glowed dark purple as he raised his forelegs above the ground.

"I WILL TEAR YOU ALL APART!!!" Arabus roared as he was hit by a magical attack.

Twilight trotted over to Alex's side.

"Did you guys need help?" Blake asked.

"Blake! Weiss!" Ruby hugged her friends.

"Aunt Ruby... We're not out of the woods yet.." Cade turned his attention towards the monster.

"We need to distract him with magic-based attacks so the physical attacks might have an effect." Twilight explained.

"I have an idea. Alicorn, keep a shield around the monster. The rest of us will swarm it." Ultimus ordered.

Twilight nodded, a lavender aura appearing around the shadowy monster as Ruby, Cade, Alex, and Neo swept to it's sides and struck repeatedly, disorienting the monster until they all leaped backwards.

Yang, Ultimus, Weiss, and Blake stayed back, firing bullets, electric projectiles, and the like, further weakening the monster until Applejack raised her legs, ready to buck.

At the same instant, they heard one loud boom coming from the direction of the city. Alex turned around, curious, to find a certain pony speeding towards them with a rainbow-colored shockwave behind her.

Another sonic rainboom exploded a second after the first, the pony speeding towards Arabus at supersonic speed.

Timing the attack perfectly, Applejack bucked one side while Rainbow slammed into the other, leaving the monster gasping for breath.

"AAAGHH... D-Do you think this is funny..?" The monster growled as the others reloaded, preparing for a second attack.

Alex laughed callously at the monster's plight.

"Well... You're in... For a laugh..!" Arabus roared loudly, the barrier breaking as Twilight fumbled, trying to stay standing.

The monster stood itself back up, glaring at the group for their intrusion.

"It's an interesting strategy, Crux. Thinking you could defeat me so easily.. The only reason I haven't killed all of you is because I'm a bit strapped for power right now... But not to worry, WITH THIS NEXT TRANSFORMATION, YOU WILL ALL FALL!!" Arabus roared again, an ungodly screech filling the air as the ground seemed to shatter.

*Meanwhile, Canterlot, Equestria*

Luna and Celestia were just about to trade off work when suddenly Luna felt a chill run down her spine.

"Sister..?" Luna questioned nervously.

"I know... Something terrible has happened.." Celestia wavered.

"You don't think..." Luna began.

"I know it's Arabus, Luna. At least he is not in Equestria." Celestia sighed.

"Not to be rude, sister, but... Isn't your student, her honor guard, and all of her friends in that dimension?" Luna asked.

Celestia knew exactly what her sister was thinking.

"I guess our citizens can deal with a slightly longer sunset.. Let's move, Luna." Celestia groaned.

--

Arabus screamed loudly, his inhuman screech filling the air as Alex struggled to stay standing.

Suddenly, the shadowy fog surrounding Arabus turned red as the sky was filled with a crimson light.

By the time they had all come to their senses, they saw an entirely different Alicorn.

"What the hell?!" Alex gaped.

"T-That can't be possible..! H-He shouldn't be strong enough to do that..!" Twilight shivered in horror.

Arabus by now stood another foot taller. His once black coat was now a deep scarlet that faded into black at the extremities, such as the wings and hooves. His horn had doubled in size and sharpened into a deadly point. The most frightening detail were his eyes, now a dimly-glowing dark purple.

"Now you understand, children... I AM YOUR DESTRUCTION!" Arabus roared again, heading straight for Alex.

Alex narrowly avoided Arabus' horn, sweeping underneath and hacking upwards.

Twilight and Weiss tried keeping him in place with magic and glyphs as the rest readied their most powerful attacks.

"Hurry..! I'm not sure how much longer.. We can hold..!" Twilight strained.

Alex, Yang, and Cade charged in from either side, powered up to their Enlightened forms and a ball of electricity or fire in Yang's case.

"TRINITY STRIKE!!!!"

The three slammed their energies into the Monster just before going all out with their other weapons. Alex spun his lever guns so fast all that anyone could see were two circular blurs and purple projectiles speeding towards their enemy.

Yang punched Arabus as hard as she possibly could, screaming in fury as she tried to end the fight there

Cade slashed at Arabus' neck, adding a few charged punches before all three leaped out of the way for the others to make their attacks.

Ruby ran around the monster in a circle with Blake, shooting at the monster before sweeping in, hacking either side, and repeating until the others could do what they had to do. Kat had ran up to the small building overlooking the ruins, and was sniping whenever she had the chance.

Ultimus and Neo stood at either side of Arabus, charging and firing massive green and orange beams of energy at the monster and getting out of the way.

Applejack and Rainbow were last, with the Earth pony repeatedly bucking Arabus as hard as she possibly could with Rainbow speeding around, kicking Arabus with precision before flying towards the coast and slamming hard into him.

By the time the smoke cleared, Arabus didn't even look all that injured.

"W-What?!" Alex gasped.

"W-We threw everything we had at it..! How is it still standing?!" Yang wondered aloud..

"H-He'll kill us... He'll kill all of us..." Twilight shivered.

"Impressive... For a bunch of Second-rate warriors." Arabus sneered.

Alex grit his teeth, letting out a low growl.

"Alex..?" Yang turned to him, noticing how utterly pissed he was by that point.

Alex screamed, throwing balls of electricity towards the monster, screaming bloody murder and making more of a mess out of the wasteland around them.

"WHY WON'T YOU DIE?!" He roared.

"Child, has this ever worked?" Arabus asked, stalking out of the smoke produced by Alex's attacks.

Alex jumped back a little, protecting his chest with his arms so Arabus would just take off the arms.

Arabus instead turned into a cloud of smoke and went through him, leaving Alex worried and afraid for his life.

Blake saw Arabus ready to stab him, and she quickly shoved Alex out of Arabus' path, and faked the monster out using her semblance.

Yang was completely enraged at the idea of losing her best friend or Alex, and punched Arabus as soon as she was able.

The blow almost completely winded the red alicorn, he crumbled downward while staring upwards with rage.

"I WILL OBLITERATE YOU!!!!" Arabus yelled, raising his front hooves and surrounding them with dark magic.

Alex's eyes widened, and staggered upwards as Arabus threw down his front hooves.

From the impact, a wave of dark energy enveloped the small clearing. Several people got idea to jump and avoid the shockwave, but many weren't as lucky.

Applejack quickly evaporated, leaving only time for one pained scream before completely shattering.

"WHAT THE SHIT?!" Alex gaped.

The shockwave dissipated, leaving the others completely shocked.

"Hahaha!! I hope this is a message to all of you... There is no victory here!" Arabus cackled.

Twilight and Rainbow couldn't believe what they saw... Applejack was dead.

Meaning the elements were completely useless.

By extension, their means of properly containing the monster was gone.

Rainbow looked angrily towards the monster, taking off immediately, screaming in rage the whole way.

"Rainbow, stop!" Cade yelled.

Arabus teleported in front of Rainbow, stabbing her with his horn and killing her instantly.

By then, everyone shook. Two of the bravest ponies Unity had were dead.

Arabus laughed.

"TEN. SECONDS. FLAT." The monster mocked them, using Rainbow Dash's voice.

Alex himself was completely shaken.. Innumerable memories ran through his mind of the Pegasus. He had known Rainbow the best out of the Elements besides Twilight, and she had actually saved his life on many occasions..

Just like Karis, or Cloudchaser and Flitter. To imagine Rainbow Dash dead was... unthinkable.

"Alex... Why are you glowing..?" Yang suddenly backed away.

Alex noticed his arms and legs, his entire body, glowing red.

"You.... You soulless... Cold-hearted... BASTARD!!!" Alex had quickly changed from his normal form, to his Enlightened form, and to his Evolved form in a matter of seconds.

Arabus continued to laugh callously at him while Alex gasped and sputtered, too infuriated to say a word.

Yang charged up as well. She knew how badly this got to him.. And besides..

Once he was already at this point, there was no stopping him.

"You son of a bitch... I'll make you PAY!!!" Alex screamed, his purple aura starting to turn red.

"Saigo, you idiot! Our enhanced forms aren't going to make a difference to this demon!" Ultimus warned.

"Listen to him! What can you do that we already haven't done?!" Cade screamed.

With one final scream, his eyes had changed, the whites of his eyes now black and his irises a red-violet. His muscle tone had changed, Alex had gained a slight amount of mass. And his final change was most apparent.

His hair was now like flame, purple towards the roots and bright scarlet at the top.

"Arabus... You're going to pay for what you did to them... IN BLOOD!!!"

Alex flew several feet in the air, Yang close by, as the two pressed their hands together at their sides.

"No... No they're not!!" Cade shivered.

This was the exact attack his Alex and Yang used to try and destroy Cinder!

"What the hell are you two idiots doing?! You'll burn yourselves out!!" Neo, yes, Neo of all people yelled.

"Alex!! Yang!! Don't shoot it!!" Ruby screamed worriedly.

The two separated their hands, a condensed beam of lightning and fire swirled around in their hands.

"T-There's no way they could survive firing that..!" Twilight visibly shook, as she was about to lose two more friends.

"Dammit, Alex! I didn't find us a way out of the militia just so you could die here!!" Kat screamed at the two.

"Yang, think about it! Do you really want Ruby to live the rest of her life without her sister!!" Blake yelled.

"ARABUS!!! YOU'VE TAKEN SOMEONE'S LIFE FOR THE LAST TIME!! SAY GOODBYE!!!!" Alex screamed.

"How can I stop them..? It's over.." Cade shivered, sitting down in surrender.

Suddenly, Arabus screamed in pain.

"What?!" Yang gasped.

Arabus fired magic blasts at innumerable directions before being lanced by another Alicorn, black as the night with a wavy, purple mane and snake-like blue eyes.

This new alicorn fired a dark-blue magic blast that blew him off the cliff.

Arabus staggered back up, seething with rage at this new being.

The Alicorn herself scoffed arrogantly at the monster.

"Arabus, I've grown tired of seeing you harassing these mortals. Your quarrel rests with me. The TRUE Princess of the Night! NIGHTMARE RARITY!"

Author's Notes:

Because who better to fight an edge-lord than another edge-lord?

Putting Nightmare Rarity into the fanfic was honestly a stretch, but I can probably explain how it happened next chapter.

Also, I think I'm somehow becoming worse than Rooster Teeth.

RWBY killed off three beloved characters in the span of about 4 episodes, where I killed off at least two characters in one chapter, and I'm killing off two or three more.

Well, In the words of Kurt Vonnegut, "Be a Sadist. No matter how sweet and innocent your leading characters, make awful things happen to them."

Also, Alex's new Super Mode is the 'Evolved Berserker'. The next two chapters are going to shed a bit of light on this one.

-The Destoyer