MLP/Undertale crossover.
Not a PWNY-verse story.

Long ago, the Monsters and Humans fought a great war. The Monsters lost, and were sealed in the Underground. It would take the power of seven human souls to break the barrier that kept them imprisoned. They only had six. And so the Monsters waited and hoped, praying that another human would find their way to the Underground. Some thought the seventh soul would give their King the strength to break the barrier. Some dreamed of a human who would be their friend, and save them all...or had nightmares of one who would bring back the war.

...but nobody came.

...but somepony did.

Eons after the war, with no way to tell how much time had passed above, a tiny blue filly with wings and horn fell into the underground, calling for her Mama. None knew the poor creature's nature or origins...but her soul was powerful with magic, even more so than a human soul.

None can know what will come...of this little 'Woona'.

Cover art by Sanyo21

XCOM Record: Operation: Rising Star
11:52 am, 18th Febuary, 2016
Northwestern Territories, Canada.

Summary: Witness reports contact with extra-terrestrial creature. X-ray is unconcious and unresponsive. X-ray does not match description of previously observed species.

Response: Strike-One dispatched on high alert, orders are to recover X-ray alive. Alien Containment prepared for the new arrival.

***

The war ended. They were beaten back, their mothership destroyed, their command structure in ruins. Lost ships and soldiers continued in vain, but thanks to XCOM, humanity won, and the world was saved. The Volunteer saw to that - everything changed because of one man.

And then suddenly, everything changed again. Only this time, it's not a man's doing - it's a mare's.

Proofreading by the aweome Setokaiva, entirely without me asking!
Tagged Dark and rated Teen: Gore, because there is going to be some blood shed by the end of this.

Please do check out the Reading List by Lance Omikron to navigate the Amalgam Universe most clearly

A massive war of titanic forces is taking place in the Kaiju's world. However, when two faction's leaders, the current Godzilla and his 'brother' Xenilla duke it out; humanity unleashes its most devastating weapon. Something beyond comprehension occurred and the boundary that divides worlds, if only for the briefest of moments, was torn to shreds. New forms are taken, new bodies assumed. But old hatreds die hard. But how well can hatreds continue in the world of love and tolerance? Especially with its own demons follow it there?

Godzilla Franchise by Toho Company Ltd.
My Little Pony is owned by Hasbro Studios.
This is a non profit fan-work and I claim no ownership on the IP itself.
Story created by Tarbtano
Co-created and Contributed by Faith-Wolff and Skylark8756

HOLY SHEETZU WE GOT FEATURED! THANKS GUYS!
6/27/2014
Now on TV tropes (Thanks Raidrik, VampyGirl; Lance Omikron, Ultimomant, and ZimFan!)

Kaiju Cast:

Godzilla a.k.a Gojira
Xenilla
Mothra
Anguirus
Rodan
Destroyah

[Character copyright of Toho and Daiei Company, artwork property of Matt Frank]

(for any G-fans, Xenilla is the kaiju you may know as Spacegodzilla. I changed the name because I got quirked about typing it repeatedly and am writing the story so it can at least be understood by just an MLP or just a G-fan; and thought it get very confusing that one character's name was just another character's name with an adjective. Also... don't pretend it's the most imaginative name Toho has every made)

Rainbow Dash is gone.
Two Years ago she performed a trick to eclipse all others, and vanished without a trace. Everypony has started to get over it, although for five ponies the loss is to great even now. In respect the Wonderbolts do a performance for her at the site of her death. However, a certain Cyan mare is hard to kill, and is loyal to the ends of the universe, she can say that with certainty now, she’s been, and now she’s back. But what is she wearing, and where did she go for two years? Buckle up, for in Equestria there may be peace, but in the 41st Millennium, there is only war.

Now with a sequel: The Descent into Madness

Featured: 06/05/2014. Thanks so much to you guys.

Rated Teen for Violence and Grim dark references

This story is similar in ideas to Into the Black: A mares tale, Diamond of the Capital Wasteland and Halo: On the wings of Angels

New cover art done by Reapers Inc

WARNING: Comments contain spoilers. Proceed into that section at your own risk.

A clerical error in the Registry of Mortals sends an unwitting human to a strange land. It wouldn't be so bad, if the ponies there weren't out for his blood.

Literally.

A little twist on the myth that unicorns were hunted for their fantastical powers.

After the Battle of the Bands, the Dazzlings left, defeated and very angry. Well, two left that way. The blue one was left, abandoned. Her name was Sonata Dusk. She was left out of the Dazzlings, and was all alone. That is, until a boy comes by her side. Dusk Shine. He soon became her friend. And with that, love comes. A story comes.

Check out my other stories if you want!

Former art: By frostblade150!
This art by: By rileyav!

Proofreading by:
-Pandora
-Curious Quill (Sorry, forgot to add you a long time ago, Quill!)

After the most important night of her career is ruined and its saboteurs not even so much as punished, Octavia's life changes. She begins to pursue a path that has never been seen before in Canterlot, where concertos and rhapsodies give way to controversy and rebellion.

A path where symphonies are composed with cans of spray paint.

Cover art used with permission by LuGiAdriel14

This story is a sequel to A Thousand Voices

"Together, we can build a future greater than any one of us could imagine. A future paid for by the sacrifices of those who fought and died alongside us. A future that many will never see..."

For seven months, Equis was left in peace, and for seven months Twilight Sparkle has waited for the return of Legion. Just as she is ready to give up hope, the galaxy decides it is not finished with Equis. Unfortunately, it does not send someone as patient as the geth...

For the alien civilizations of the galaxy, they fight for their lives against the greatest threat ever known. And when victory is finally achieved, the crew of the Normandy find that their mission is not over just yet.