Inspired by the story image, RainbowDoubleDash's Lunaverse and Trinary's "Rainbooms and Royalty", I give you my take on the alternate universe concept. Namely, a universe where Spike is the pony and Twilight is his dragon assistant.

The thousandth Summer Sun Celebration is approaching. With it will come the return of Nightmare Moon. Celestia has no student to call upon to save Equestria, and is doing all she can to make the last day of peace meaningful for her people.

Meanwhile, Spike "Purple Prose" Flail is a reporter for the Canterlot Sun. He finds himself being shipped down to the boonies with his longtime friend and assistant, Twilight, to cover the biggest festival Equestria has seen in a millennium!

But even with a visit from the princess, there's no way someplace as boring as Ponyville could ever be newsworthy. Right?

A/N: Credit for cover image goes to dzetaWMDunion on Deviantart art.

Story would also include character tags for Thunderlane and Cheerilee if not for the character tag limit.

Now has a TVTropes page!

When Spike asked Twilight to help him create The Noble Dragon Code, he hoped a lot of things would happen.

Getting worshipped as a god by legions of theologically-inclined dragons wasn't really one of them but, hey, whattcha gonna do? Them's the breaks, kiddo.

Spike the Dragon has been the librarian at Ponyville's Golden Oaks Public Library ever since...
For a long time.
Today, an old friend comes to wish him a happy 100th birthday, but then a letter arrives, which leads to more letters, left to him from his youth and adolescence.

A bittersweet tale of Spike coming to terms with his place in the world through looking back at how he grew up.

(Rated Teen for heavy themes. No Sex or Gore)

When they began to read the ancient book Twilight and Spike only had the slightest of ideas what it could possibly be about. As the illuminated inks revealed to them an image of Princess Celestia locked in combat with a massive dragon and his sons they realized that the song written upon the aged pages was telling of a long forgotten battle...

... and that the Celestia they know and love is capable of things they dare not imagine.

Inspired by the image "By Celestia's Might" by John Joseco.

Three hundred and forty-seven years, two months, fourteen days. That’s how long it’s been since the day Spike was hatched. She could count down to even the hours, minutes and seconds but it didn’t matter at this point.
One day. That’s how long it had been since he passed away. She could count down to even the hours, minutes and seconds but it didn’t matter at this point…

Inspired by Bones Season 9, Episode 11

The Princesses find an alien creature barely clinging to life at the scene of a terrifying crash. Can the Combined Power of the Elements of Harmony save it, or more importantly, should they save it? Will the arrival of this strange creature tear Equestria apart?

TV Tropes
https://tvtropes.org/pmwiki/pmwiki.php/FanFic/Article2

When Equestria accidentally opened a portal to another world, they discovered a new species: humans. Their arrival changed the world. For the Equestrian Ponies, it heralded a great cultural and technological jump needed from their stagnating way of life. For the Gryphons, however, they represented something baser: an opportunity to increase food stock and finally have a 'friendlier' predator species to ally themselves with.

For Gilda, one of the the humans was Ancestor-sent, a soul she would protect for bringing much joy to her life. And when a chain of events force her to accompany her human to Equestria, she recalls the circumstances of their meeting, the trials they pass through, the friendship forged through fire, and love born out of understanding under the harsh skies of the Kingdom.

This is her story.

"You are mine!"

~ Grizelda Behertz

Story set in The Gentlemanverse.

The Equestrian Critics Society gave this story the initial score of 8.5/10. (Full Review)

A one-shot story of the history of the Gryphon Kingdom can be found here.

OtterMatt's WRITE Review. Score:

Added to Canterlot's Finest

Oh Fortis, where are you?

Before there was the Gryphon Kingdom, there were the Griffin Tribes.

Before there was unity, there was strife.

Before peace, there was war.

Blessed Arnau is the Last Lady of the North, facing an enormous task. The griffins face a seemingly unstoppable enemy tide—The Cloven of the Sun. Marching endlessly northwards, they hunt for the remnants of the griffin Tribes making their last stand in the stronghold of Falhstein, a stronghold that has not tasted war in decades.

With promise of support from Fortis, a mere commoner of surprisingly sharp mind and will, she is tasked to lead a defense that will mean the survival or end of her race.

This is her story.

This is my first official World Building Alliance prompt entry for May 2013. Word Count: 5,480

Scored 4.42/5. Second Place for May 2013 Prompt.

The story takes place in the The Gentlemanverse, predating the a time before Equestria opens a portal to Earth. It is an exploration of Gryphon Kingdom history before the events of Feathered Heart.

It was a completely normal day in Ponyville for Twilight Sparkle, or at least, that's what she thought it would be. That should have been her first clue that something was up. She expected it to be a quiet day where she could hang out with her friends, and maybe she'd get a friendship letter in if she was lucky.

She did not, however, expect everypony in town to turn into a flaming racist overnight.

Find this story and more in a print copy! Just click these words here!

The Power Ponies are coming again.

Another escape from custody, another scheme to take over Maretropolis, and another chance for the Power Ponies to defeat her. Such is the cycle that Mane-iac has endured for as long as she can remember.

And she's sick of it. She's sick of all of it. Now on the cusp of one more battle with her nemeses, she can only think of how much she has sacrificed for the city in her battles against the Power Ponies, and how much more she can take.

Find this story and more in a print copy! Just click these words here!

First place winner of the Everfree Northwest Fanfic Competition!

Thank you to Prak for editing help!

Featured on Equestria Daily 4/27/14