After the debacle of the Storm King's short-lived invasion and the fall of Canterlot, the former attacker, Fizzlepop Berrytwist (Commander Tempest Shadow), muses that the princesses' ability to fight was sorely lacking. Considering that she pretty much took them all down in seconds.

In order to prevent such an abysmal display in the future she has, through a few contacts around Princess Twilight, recruited the aid of a combat master who should be able to teach four princesses avoid such embarrassments in the future...

...Or kill them trying.

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

Idol Hooves holds a special place in Equestria. He's probably the only exiled changeling to serve in the Royal Guard, or at least, that's what he expects, as exiles don't really broadcast that fact. However, it's well known that Princess Celestia loves all of her little ponies, and her guards perhaps more so, and that makes it one of the best ways for a changeling to discreetly feed.

But how does a changeling even get there, let alone get exiled in the first place? For that matter, why would it ever go to Canterlot? Set a number of years before the series proper, before Luna’s redemption, Idol details how he was exiled, the ponies he’s met, and the series of misadventures that led him to joining the Royal Guard, and should continue a good ways into the series, as something of an alternate perspective.

Soon, he’ll have to deal with a boisterous new princess to serve and a royal wedding in the works bringing a third to power. Will his old instincts bring this new life crashing down around him? What precipitates Chrysalis’s ill-fated assault on Canterlot? Is it really so wrong for a changeling to enjoy good craftsmanship to an obsessive degree?

New cover art provided by the fantastic Carnifex

And a TVTropes page here.

And an Ask Blog of questionable canonity!
Out of Idol Curiosity

Fanart by Norad2! Major thanks! Short For a Royal Guard

Art by Egophiliac of Idol and his Daring Duckie Please don't tell him what that brush is meant for.

Rating updated to (T), it's a bit darker than (E)
Comedy Tag added as well
And changed the character tags a bit.

A human wakes up to find that not only has he been altered in species and gender, but that he has also landed halfway across the world from Equestria, in an unfamiliar land.

This is not that story. Not yet, anyway.

A decade in passing and Kaz has gained a reputation as a member of a well-known group of explorers traveling the world. Not once have they set foot on Equestrian soil, and she was content to keep it that way, for her appearance would bring about unwanted attention from a few certain ponies and one certain baby dragon. So what happens when the rest of the group hears of unbelievable tales of Equestria, and decide that it's time they paid a visit?

An impending disaster, that's what.

This story is a sequel to New Beginnings

Human turned Unicorn Blank Page is finally settling down in his new form and home and life is returning to normal. What a normal life is however might be relative, especially when you suddenly changed species, are living in the castle, dating a god-princess and is followed around by changelings.

Warning: Contains enough slice of life to make a entire cake of life.

Continuation can be found here: http://www.fimfiction.net/story/332488/consequences

AN// All the thanks to people over at Spacebattles.com for helping me beta.

AN2// Many thanks to mix-up for the coverart. His user page can be found here: http://www.fimfiction.net/user/mix-up and the deviant art page can be found here:http://amalgamzaku.deviantart.com/

This story is a sequel to Consequences

Flying is a lot like life. Keep beating your wings and hope not to hit something at terminal velocity. Being an Alicorn doesn’t make it any easier.

Especially when you are trying your best to keep it hidden.

Since the defeat of Tirek, Blank Page has been trying his best to keep his sudden case of Alicorn hidden from the general public.

Because honestly, who would want that much responsibility?

Coverart by Sipioc

This story is a sequel to Normal Life

Cause and effect. Opposite and equal reactions. If a butterfly... You know how it goes. The point is that your actions, large or small, have consequences. If they turn out good or bad is often not up to you. Especially when you live with the Princess.

But fear of the consequences is not a reason not to act when you need to.

Next story can be found here: https://www.fimfiction.net/story/361744/secret-of-flying

A magical accident has a human end up in Equestria in the form of a unicorn.

Warning, Spoilers in comment section.

Cover art by: Sipioc

AN// All thanks to the people over at spacebattles.com for betaing.

Sequel can be found here: http://www.fimfiction.net/story/306592/normal-life