-TERRARIA, THE UNDERWORLD-

Flowing pools of liquid hot magma emit glooping sounds as small pops follow soon after. Various demons fly and teleport around this damned realm as even large skeletal serpents often jump out of the pools of lava before submerging once more. Screams could be heard as tortured souls, and even still-living entities, cry out for a semblance of peace. To escape their torment.

A familiar individual was currently making his way towards a blackened structure, bricks made entirely of what seemingly was obsidian and ash. The individual spins around in a mixture of celebratory and dancing fashion as Tanner, or Voodoo Demon, sings:

“Tomorrow’s the day and our invasion will be perfect,
The kind of day we demons wanted since we were small.
And now Twilight and her friends are in a cage,
Thanks to them, we shall finally claim,
Don’t forget that The Guide is equally to blame,
For the day we demons finally rule them all!”

The disguised Voodoo Demon jumps onto the back of a skeletal serpent, which emerges next to him.

“I have plotted and schemed,
There’ve been those who’s seen through me,
But in the end they will scream:
‘Please Tanner! Please spare me!’
No! That is what I’ll say,
For you see that will be the day,
When the worlds merge and there’s,
HELL TO PAY!”

The skeletal serpent lowers itself right next to the black structure as ‘Tanner’ hops off and lands onto the ashy/obsidian landscape. He dismisses the serpent soon after and nearly enters the structure.

“Nyarlathotep’s reign shall be remade,
And when that day comes we’ll set the world aflame.
But alas, there’s a secret that even THEY can’t unmask,
And I shall soon find that blade, containing my TRUE master’s rage,
LUCIFER, PIT LORD!
THAT IS HIS NAME!”

……….

The disguised demon kicks the door open to the structure as both his chuckles and footsteps echo throughout the hallway before him. Incidentally, this structure was the very same one that contained four captured individuals: Twilight Sparkle, Starlight Glimmer, Zecora, and Tanner The Doll.

As he makes his way towards the depths of the prison, the demon in disguise smiles devilishly and says:

“Lord Lucifer, Ancient Of The Underworld… I shall complete my task and release you from your imprisonment,” The Voodoo Demon chuckles once more, “All I require is for that fool, Nyarlathotep, to merge the worlds. And for The Guide to shatter that blade… The Murasama.”

Within a blackened cell in the depths of their prison, Twilight, Starlight, Tanner The Doll, and Zecora were currently sitting in various spots throughout their confinement. The cell was silent for a few moments before Twilight says:

“I still can’t believe everything you’ve told me,” The lavender alicorn sighs sadly, “Our world will be drawn into this one… and we can’t even stop it?”

The doll sighs sadly, “I’m sorry, Twilight… but it is inevitable. The worlds will merge into one, Nyarlathotep will strike, and the demons of The Underworld will invade the surface of Terraria.”

Starlight Glimmer stomps a forehoof, “There has to be a way! We can’t just throw in the towel now, and the others-”

“They can’t reach us down here, Starlight,” The Doll responds in a sorrowful tone, “Not in time, anyway.”

Starlight’s eyes widened in response, “Wh-what do you mean? Surely they can use a Magic Mirror... Or even that Wormhole Potion that Zecora and Gex created. Why can’t they reach us?”

“Nyarlathotep… The Wall Of Flesh. They’re blocking such convenient forms of travel by means of their exceptional warping of reality,” The Doll scuffs, “Of course, the only exception is that damned demon who’s impersonating me. He’s able to use his mirror as he pleases.” The Doll responds.

Zecora comes to a realization as a sudden gasp escapes her muzzle, “Even if that were to be true, how was it that Yharim came to visit you?”

This catches the attention of both ponies as their ears perk up. The Doll, in particular, seemed to be lost in thought before he says:

“Of course… Of course! How could I have not thought about that before?!”

Twilight, Starlight, and Zecora look to each other in confusion before the alicorn questions:

“What is it, Tanner?”

“A Hellevator! Demons use it if they lack the means to return to The Underworld, for any reason,” The Doll responds. “It’s essentially a large shaft that connects the surface to The Underworld, and vice versa.”

This immediately catches the attention, even more, of the three mares.

Tanner The Doll clears its throat, strange as it may sound, and says:

“I can not say for certain how Yharim is able to enter The Underworld. But when the Voodoo Demon captured me in my private residence, in my guild, and replaced me, he was able to slip past the protective barrier of Camelot. He must’ve conjured forth a Hellevator and positioned it beneath my guild.”

“A barrier?” Starlight questions.

“Yes.” The Doll replies as Twilight’s curiosity was especially peaked, “You see, Camelot is shielded by the powerful blade itself, Excalibur.”

Twilight’s features turn into recognition, “That’s right… Linn told me about it before I, well, got captured…”

“Ah, so you’ve met the descendant of Shining Armor, then?”

Twilight, Starlight, and even Zecora’s eyes shoot wide open as they all exclaim in unison:

“What?!”

“This world’s version of my brother is Linn’s ancestor?!” Twilight exclaims in shock.

“Woah… I wasn’t expecting that to be the case…” Starlight commented in equal shock.

Zecora flickers her ears and waits patiently for The Doll’s words. The aforementioned doll chuckles before saying:

“Destiny, or fate, can be a funny thing sometimes. This world’s version of your brother was the hero who struck down Nyarlathotep’s weakened form.”

The three mares dropped their mouths in response, eyes wide open.

“Wielding the mighty Excalibur, and blessed by Harmony herself, Shining Armor went forth to combat the weakened menace.” The Doll said.

“Weakened?” Zecora questions.

The Doll chuckles, “Nyarlathotep’s own arrogance became their undoing. Let’s just say that their time in this world slowly eroded them.”

“Wait a second for now I remember, Gex told me the creature was defeated by unknown means... Twilight’s brother was the remedy?”

“That is indeed the truth, Zecora,” The Doll responds, “This happened not too long after The Time Of The Ancients, but before The Coming Of Cthu-”

“I sure hope that I’m not interrupting anything,” A familiar, but all too sinister voice interjects, “Storytime is over, children. You’ve all got a job to do… without your consent, of course.”

Everyone in the cell practically growls in response as they all shout in unison:

“Voodoo Demon!”

“Why yes, and thank you!” The disguised demon responds as he mockingly bows to them.

“You won’t get away with this!” Starlight exclaims.

“Ah, this typical line again,” The demon says and rolls their eyes in response, “Well, allow me to respond with the typical line of the villain,” Voodoo Demon clears his throat and deepens his voice in a mocking fashion, “Oh, but I already have Starlight Glimmer. Evil laugh, evil laugh, ha ha bla bla bla bla.”

Starlight growls in response once again.

“You can act superior all you want, but my friends will stop you!” Twilight exclaims in defiance.

The demon laughs, “Oh, please… those idiots couldn’t permanently kill me even after they found out the truth about me. Kudos to them for that, but of little consequence.”

“You are a fool to say such a thing, for by the end of this, our allies will save the day,” Zecora states proudly.

“You underestimate these brave souls, demon!” The Doll roars out.

Loud laughter erupts as the disguised demonic entity grabs his stomach, “O-oh, you’re all too much!” He returns to his laughter.

“Yeah, yeah, laugh it up, buddy,” Starlight says before she smirks, “We’ll see who’s laughing at the end of the game.”

“Tell you what. How about I just drag you all out of your cell so that we can begin?” The disguised demon says before snapping his fingers, summoning three large demons in the process.

The three mares in the cell become horrified by these entities as the imposter opens the cell door. Tanner The Doll in particular roars out:

“Leave them alone! They don’t deserve this, so let them be!”

Tanner’s imposter chuckles, “Oh come now… when has that line ever worked before?”

Twilight, Starlight, and Zecora let loose grunts of pain and resistance as the three large demons forcefully grabbed the three mares. The disguised demon heads straight to The Doll, the very being he impersonated, and comments:

“How does it feel to know that this is all your fault, me?”

“You are not me!” The Doll roars out defiantly.

“No shit, sherlock. Rhetorical question,” The Voodoo Demon responds with a dismissive gesture. He then picks up The Doll by grabbing onto its neck region, “It’s a shame you can’t feel this, me grabbing you by the neck and all. But at least I can enjoy myself.”

“Where are you taking us?!” The Doll demanded.

“Why, to Nyarlathotep himself, of course,” The disguised demon answers with a maniacal facial expression, “The process of unification shall soon commence!”

-???-

Lord Zalgo stands before the chessboard, appearing to be deep in thought.

“Tanner seems to be planning something that goes against the usual trend. Hmmm…” The eldritch horror says, clawed hand tapping the side of its’ visor. “Cozy, my dear… Come over here a moment.”

“Yes… Lord Zalgo.” The empty filly responds.

“I have need of you. We shall be taking a small vacation. How does that sound?”

“If it is by your will… all sound well, my lord.”

“Hmph. At least show some personality, my dear. I know I took your soul, but I didn’t take your emotions.” The old one says as a flashing sunset glow emanates from its shoulder screens.

As if a switch was flicked, Cozy Glow seemingly retrieved her former self, but not truly, as she responds:

“You got it, Mr. Zalgo sir. Oh golly, I sure hope I can perform this task well!”

“Much better. Now, as I asked… How does a vacation sound?”

A vibrant smile appears on Cozy’s face, “Oooh, that sounds like a lot of fun! Where are we going?!”

Zalgo looks at the board, picking up two very specific pieces and placing them next to Tanner’s.

“We’re going to be visiting The Underworld… It seems the Voodoo Demon needs to relearn his place.”

Character inventory/equipment:

Fluttershy: Statigel Armor(pony, equipped), Overloaded Blaster, Eviscerator, Crimslime Staff, Corroslime Staff, Slime Staff, Finch Staff, Snow Flinx Staff, Hornet Staff, Blood Clot Staff, Deathbringer Pickaxe, Blood Lust Cluster Axe, Healing Potion, Honey Comb(equipped), Brain Of Confusion(equipped), Mana Polarizer(equipped), Honeyed Goggles, Slime Mount, Staff Of Necrosteocytes, Purified Jam.

Rainbow Dash: Necro Armor(pony, equipped), Star Cannon, Minishark, Eviscerator, Aquatic Discharge, Bloody Rupture, Deathbringer Pickaxe, Blood Lust Cluster Axe, Healing Potion, Aero Stone(equipped), Brain Of Confusion(equipped), Bone Glove(equipped), Mana Polarizer(equipped), Victory Shard, Slime Mount.

Zecora: Crimson Armor(zebra, equipped), Dune Hopper, Sausage Maker, Beenade, Tooth Ball, Aorta, Deathbringer Pickaxe, Blood Lust Cluster Axe, Various Potions, Rocket Boots(equipped), Honey Comb(equipped), Sand Cloak(equipped), Brain Of Confusion(equipped), Bloodstained Gloves(equipped), Bone Glove(equipped), Mana Polarizer(equipped), Honeyed Goggles, Skeletron Hand.

Starlight Glimmer: Meteor Armor(pony, equipped), Space Gun, Starfury, Vein Burster, Purple Phaseblade, Deathbringer Pickaxe, Blood Lust Cluster Axe, Mana Potion, Healing Potion, Victory Shard, Rocket Boots(equipped), Aero Stone(equipped), Brain Of Confusion(equipped), Mana Polarizer(equipped), Bone Glove(equipped), Slime Mount, Book Of Skulls, Skeletron Hand.

Rarity: Meteor Armor(pony, equipped), Space Gun, Hornet Staff, Snow Flinx Staff, Ice Mirror, Blood Clot Staff, Deathbringer Pickaxe, Blood Lust Cluster Axe, Mana Potion, Rocket Boots(equipped), Brain Of Confusion(equipped), Mana Polarizer(equipped), Slime Mount, Book Of Skulls, Skeletron Hand, Staff Of Necrosteocytes.

Applejack: Crimson Armor(pony, equipped), Vein Burster, Orange Phaseblade, Deathbringer Pickaxe, Blood Lust Cluster Axe, Rope, Metal Detector, Healing Potion, Rocket Boots(equipped), Honey Comb(equipped), Flurry Boots(equipped), Brain Of Confusion(equipped), Mana Polarizer(equipped), Honeyed Goggles, Slime Mount, Bone Glove, Skeletron Hand.

Twilight Sparkle: Meteorite Armor(pony, equipped), Space Gun, Book Of Skulls, Deathbringer Pickaxe, Blood Lust Cluster Axe, Mana Potion, Ichor, Victory Shards, Aero Stone(equipped), Brain Of Confusion(equipped), Mana Polarizer(equipped), Slime Mount.

Pinkie Pie: Crimson Armor(pony, equipped), Vein Burster, Blue Phaseblade, Bloody Rupture x2, Aorta, Deathbringer Pickaxe, Blood Lust Cluster Axe, Metal Detector, Rocket Boots(equipped), Honey Comb(equipped), Flurry Boots(equipped), Brain Of Confusion(equipped), Mana Polarizer(equipped), Bone Glove(equipped), Honeyed Goggles, Slime Mount, The Blood Butcherer, Skeletron Hand.