Something is... missing.

Something important.

Something necessary.

Something dangerous.

And I am going to get it back.

Peter Kempachi-Ramasama, born and raised in Brooklyn, New York, gets the, quite literally, once in a lifetime chance to visit an alternate universe.
He takes it, and ends up in the Everfree Forest - the one place in Equestria that has ties to external universes.
And he effectively tears the canon of the show apart by being the Seventh Element of Harmony: uh...um...Jerk? Yeah, that sounds about right.

Warning: naughty language.

A brony is transported into Equestria, but he finds himself in the body of a huge wolf. Can a carnivorous predator really befriend ponies, herbivorous equines, or will his new predatory instincts and the ponies instinctive fear of him make it impossible? His strange situation does not dampen the joy of actually being in Equestria, but that changes as an alien hatred starts gnawing at his mind...

Something is causing the pegasi to follow an irresistible urge to hug their ground-bound cousins, leaving Ponyville foundering in a mildly annoying emergency. Twilight Sparkle ventures into the no-more-dangerous-than-usual town in a desperate attempt to solve the cutesy crisis and finally get her study time back.

Inspired by shortskirtsandexplosions' story Herald.

This story is a sequel to The Monster in the Twilight

Now that Luna has returned to the throne, and the aftermath of her brief appearance as Nightmare Moon is being cleaned up, the story is over. Right?

Not quite.

Twilight Sparkle had nearly been destroyed in the chaos of Nightmare Moon’s return, but now with the assistance of her five friends, she is facing a fascinating new world filled with wonderful things. No longer the scarred monster who nearly destroyed Canterlot and raged through the Everfree Forest for over a decade, now she has been healed by the Elements of Harmony and is living at the edge of town with her adoptive mother Zecora. Not all the fears of her past can be left behind that easily though, and now she must face the consequences of her actions as she faces the most daunting challenge of her life.

Ponyville.

Letters is a sequel to the alternate universe story The Monster in the Twilight. In this story, Twilight Sparkle exchanges letters with Princess Luna, two ponies with a common problem of fitting in and making friends after the destruction of Nightmare Moon.

Normally I would try to talk you into reading the sequel even if you haven’t read the original story, but in this case, you’ll probably be more confused than entertained. But go ahead. I don’t mind if you don’t read the first story. You’ll never find out what an Urlock is, but that’s fine. It’s your funeral.

Editing Assistance by Alicorn Priest, Peter and Tek

Credit for the incredible picture All Night Study Group goes to Bibliodragon at Deviantart

Physical books are available on Lulu.com (up to Chapter 82)
Letters From a Little Princess Monster (Paperback) 726 pages
Letters From a Little Princess Monster (Massive Hardback) 780 pages

Walking with the paws of an ancient predator, a young man finds himself in a strange world. A world where horses are the dominant species, and he’s a very rare and dangerous animal. How will a speechless man turned wolf deal with society? How will he approach ponies? Would he even want to bother speaking to them?

(Love interest is not revealed in any of the current chapters. So don't freak out when you don't see it. I'm also focusing on a very realistic sense of love. This will be a later part of the story when romance becomes truly relevant. Point out ALL errors to me when you see them, even the ones that have been pointed out already, and I'll see what I can do.)

(Special thanks to my EPIC Proof-reader and Editor ultra1437)

King Sombra’s dark influence was obliterated by the Crystal Heart, and the villain is well and truly dead. But when he attempts to steal the afterlife of an innocent victim, a human spirit is left hurtling towards Equestria, where this unfortunate soul is revived into the only vessel available: the reconstituted body of King Sombra himself.

Thus, a cheerfully oblivious alien is crammed into the form of the most evil and malicious being Equestria has ever known. Not that Shining Armor and Cadence know this, of course. As far as they are concerned, the King is back and he’s lost his fricking mind.

Click here for the TV Tropes page!

Good morning, afternoon, night, or whenever you're reading this. My name is Edward, aka 'patient 42', and I am currently residing in an insane asylum.
Why?
I suppose it all started When the ruler of this place called Equestria tasked her personal student, Twilight Sparkle, to travel to Earth and study the human race.
Unfortunately for Twilight, when she teleported to our world she, well... she appeared in the middle of the road. Right in front of my car. Needless to say, this put a pretty big dent in her expedition. ...as well as my car's bumper.

Sounds crazy, right? But hey, maybe thats the reason why I'm in this cell.
Point is, The story I'm about to tell you is the tale of events sparked by that ill-fated night.

note: In this plane of existence, the franchise "My Little Pony" does not exist. In short; this is not, nor will it ever be, a 'brony meets pony' story.
Also, on a more recent note, I had this idea and began writing way back in S2, so this is in no way inspired by EqG. (also, its non-alicorn twilight)

A Spartan of the UNSC falls into Equestria and has various shenanigans in the land. First chapters revolve around how he meets the royalty, the mane six, and the new world in general.

Twilight's Cuckoo Clock stopped working, so she took it to Time Turner to have it fixed. It turns out to be an ancient artifact covered with seals and filled with mechanical impossibilities. What secrets is the library's Cuckoo Clock holding? ((NOT a Dr. Whooves Story))