This is the story of a brony, who inserted into Equestria.
But instead of a pony, he became the enemy of Celestia.

Would he decide to do what’s right, to love and tolerate
Or would his evil changeling nature make it hard to integrate

Then there is the question of the duty that is his natural birthright
Tasked by the changeling Queen, he was to murder Princess Twilight

So, here’s my attempt at a SI with a bit of a twist that others have done before. Go to Equestria, end up on the wrong side of the tracks, and have to deal with it. Enjoy!

Art provided by SoukiTsubasa

Harry Potter was a lonely boy who one day wished for a friend. Luna, trapped on the moon, wished for the same. And so their wishes are granted. How will the two deal with each other? And what about Nightmare Moon? Needless to say, their lives are going to change in both expected and unexpected ways...

Other stories in the Lonelyverse:
Hooves, Plush, and Magic: The Untold Tales
The Wizard and the Lonely Princess: Hallowe'en Special
A Nightmare Christmas

Chapters 9-11 now re-written.

A Parody of Beauty and the beast, the musical.

To save their guardians Shining Armor and Twilight take their places as the prisoners of Discord and Chrysalis but soon the prisoners turns into guests then, later into love.

Aecorum was once the High Prince of the Sea, who stood alongside Celestia and Luna in the battle with Discord and helped rule over Equestria. But after he used the Elements of Harmony with Celestia to banish Nightmare Moon, he left. He blamed himself for what had happened, so he erased himself from history and from the memories of everypony in Equestria, even Celestia herself! He trapped himself in a network of caves by the sea, and lived in solitude for a thousand years. But now Luna has returned, she has regained her lost power, but she can’t find her old friend. What will happen when she discovers what he did? Will she find the stallion she considered her dearest friend and convince him to return? Or will he remain alone with his guilt and shame forever?

The Dragonborn, a legendary warrior capable of absorbing a slain Dragon's soul, and knowledge, directly, forever killing it. The Last Dragonborn had defeated the first, stopped the plans of a Vampire cult, and built his own lakeside home, before finally slaying Alduin the World Eater and fulfilling his fate. Now, after all the challenges he has faced, the Dragonborn is sent to a realm where Friendship is Magic, and there is no mead. Finally, to cap things off, he kind of... well...
Became a Dragon.

Newfoal reporter 'Frontpage' has always yearned for the ultimate scoop. A last minute assignment for the centennial of Zero Point - the last moment of the doomed earth - leads not only to the biggest story of his career, but the greatest secrets of Equestria... and far, far beyond.

This is a partial sequel to HUMAN In Equestria, but knowledge of that story is not required to enjoy it. This is the final Conversion Bureau novel.

It has been nearly sixty years since humanity witnessed the devastation of a World War, or any other kind of large-scale conflict. Equestria's abstinence has been even longer, with battles that rage across the entire land not being seen for centuries. Though both have seen their share of small-scale skirmishes, a duel of total annihilation across a large scale has been avoided by both sides time and again.

But peace is never lasting. For both sides, it lies on a cliff, requiring only one good push to send the participants into a plunge of death. Equestria's unexpected appearance may turn into that final push, as alliances, deception, and distrust threaten to launch a conflict that will lead both worlds to utter ruin.

CREDITS:
This work contains characters and parts created and written by other authors. I am grateful to have become friends with each of them.
Captain Jack R. Williams of the U.S.S. Boxer (LHD-4) created and written by An A10 Warthog
Captain Wilbur Hart and the U.S.S. Tippecanoe (CG-74) created and written by Totallynotabrony
Captain Starry Skies and the R.E.S. Horseshoe Bay (CSG-2) created and written by The Grey Pegasus
H.M.A.S. Sydney created and written by An Iowa Class Battleship
H.M.C.S. Presence created by Sockeye101 and written by The Rainbow Brony
USAF Pararescue team Prancer Two created and written by CptBrony
Carter Jones of the 130th Engineer Brigade written by Routine Blast
1st LT. Silverglow and the Karalian Army created and written by Silverstein.
Sergeant Jeff Thompson of C Troop, Royal Canadian Dragoons created and written by Goldenarbiter
Junior Sergeant Korrector and the 115th Motor-Rifle Division created and written by Kalash93
(More may be added over time)

NOTES:
Rated T for violence and language.
My Little Pony: Friendship is Magic created by Lauren Faust and owned by Hasbro.
Any and all other works belong to their respective creators.

It has been years since the fall of the god of chaos. A stable rule is established by the two sisters that defeated the mad god, Princess Celestia: Pure of heart and power to raise the sun and protect her citizens. The other sister is not as fortunate to have as kind a reputation...Princess Luna: Clinging to shadows and bringer of the night. While ponies basked in the bright day, they shunned the night; leaving the younger sister to feel unwanted and alone compared to Clesetia's sun. They worked together to protect Equestria and the Princess of Night lived in the shadow of her sister, sorrow and depression mounting to rough thoughts of hate...but a certain somepony just might change that...even if the love is forbidden.

(Art by Marik Azemus)

It has been 30 years since Tirek was defeated. Now, after having traveled the world to regain his power, he is ready to conquer Equestria once and for all. However, the arrival of strange new outsiders threatens to bring Tirek’s plans to a halt. The fate of the world now lies with these strangers.

Now if only they could stop trying to kill each other…

The nation of Equestria has been exploring their little slice of the universe for some time now. From launching probes into deep space, to landing ponies on the moon. Sending things beyond the grasp of their planet has become almost routine. However, with every mission into space, there comes a time when the voyage must end. What happens when Equestria experiences the end of a voyage that they didn't begin?

Updated and Revised on October 5th, 2014