After decades of peace and the retirement of the Elements of Harmony, Rainbow Dash has died, the fourth bearer to do so. With only Rarity in her late 70s and Princess Twilight Sparkle left, can they possibly stop the newest threat to Equestrian livelihood? The better question is: Do they really have to?

"Most HiE's have a charismatic hero. Most HiE's are also more or less upbeat to start. This is not most HiE's..." -LucidTech

After GLaDOS is uploaded into a potato battery, Wheatley humiliates the AI even further by uploading her into a project that was abandoned by Aperture a long time ago. In the blink of an eye, she finds herself in a deformed body of flesh and bone that resembles an equine, and is just as powerless as one too. It comes with all of its needs and bodily functions as well. To make matters worse, she's trapped in a land full of insufferable creatures that just want to make 'friends.' Will GLaDOS' cold, sadistic sense of humor and morals get the better of the ponies? Or will they peel away the once artificial being's metallic shell and find that there's a softer side? Probably not, but it's worth a try.

Story Theme: Tyler Bates - I Love You (Watchmen OST)

Thanks to Meeester, MrJoshy, and funkyferret for proofreading/reviewing.

Cover by Fedte16.

An accident in the lab sends our favorite boy genius to Equestria, as a pony. What will he do and how will he get back? The answer: Science! (Cover Art Updated!)
New FAQ! and TV Tropes!
Planned Phrases from Dexter:
“Pinkie Pie! Don’t push that Button!” /to Pinkie
“Please, Magic is the word simpletons and the ignorant use to describe what they cannot understand.”/ to Twilight
“No, I didn't strap a rocket to you. I strapped you to a rocket.” /to Rainbow Dash
“Friends? Who needs friends?”

Dexter is a boy super-genius with a disdain for anything girlish and no desire for friendship. After an mishap in his lab, he gets stuck in Equestria. How will he cope with the over-friendly ponies, and the girlish everything?
For any who do not know Dexter's Lab: http://en.wikipedia.org/wiki/Dexter's_Laboratory
[RIP Christine Cavanaugh: 8/16/63-12/22/2014] - Dexter's Original Voice Actress

After the changelings' failed invasion of Canterlot, Twilight tries to soothe some of Ponyville's rampant paranoia by casting a spell to prove there are no imposters hiding in the town. But her spell leaves her in an alien body, facing a mob of angry ponies who just don't believe her when she says she is Twilight Sparkle.

Or, at least, she was Twilight Sparkle, anyway...

Featured on Equestria Daily, 2/17/13
Cover art is by the awesome and amazing Conicer

After one of the worst days of her life Carrot Top is asked by a dreadfully ill Rainbow Dash to help Fluttershy. Feeling sorry for the mare, the Element of Generosity agrees to help Fluttershy with getting the animals homes cleaned out. What could go wrong? Kidnapping, randsom, evil illusionists, and multiple musical numbers aside. Set in the Lunaverse, one of the more interesting alternate universes out there.

The Apple Family decides to plant wheat this year and end up with a surprise house guest.

How will the Apple clan handle having a wolf in their home? Let alone, a Wise Wolf that's obsessed with sweet, succulent, juicy apples?

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Yep, Spice and Wolf crossover. Wish me luck I'm gonna need it. If you like it, tell me why. If you don't like it, tell me why.
Artist for image is roshichenAll copyrights belong to their respective owners.
Feature Box Achivement Unlocked on the 23rd of December, 2012!

This story is a sequel to Gotta Dash 'em All

After much anticipation, Twilight has finally succeeded in designing a teleporter capable of sending ponies to the Unova region. Unfortunately, a trio of mischievous fillies decide that this may be the perfect opportunity to get their Pokémon trainer cutie marks.
When the mane six discover that the trio has used the machine, they follow them to the Unova region for a rescue mission. Can they find the Crusaders before it's too late to save them from themselves? Stick around to find out.

Both Link and Epona race to fight evil once again, however once they make it to the thing that is behind all the monsters that roam Hyrule, they get a big surprise. Once again, Equestria is threatened by evil and Link is once again called to the line of duty. Isn't he?
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[NOTES]
I will add tags as I go along.
Cover image was made by Aeroflyte on DeviantArt, which can be found here, go check him out.
Now edited by these people: m2pt5 and Crescent Quills!
Based off of the Ocarina of Time timeline (which includes Majora's Mask), but takes a few aspects from Twilight Princess.
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How could one love another if they could only live by evil? It has been over five-hundred years since the first, and much to her surprise, Chrysalis, queen of the changelings, has given birth to another changeling; the first changeling to have ever been born straight from the queen in such a long time span. Yet this one is not like the others. No, this one is much more different. How can a queen who feasts off love care for such a delicate creature?

(New!) Image credit goes to: ZymonasYH

Set in the Nightmare Moon Takeover Timeline of the Season 5 Finale.

When Nightmare Moon cast down Princess Celestia and rose to power in Equestria, Rainbow finally found some sense of pride as one of her chosen Night Guard; pegasi empowered by Nightmare Moon herself as her elite soldiers.

When Rainbow joined the Night Guard, she met Applejack, the only pony she felt she could ever truly rely on. The only pony who ever gave her a sense of joy in her otherwise dreary life.

But when Rainbow discovers a terrible secret hidden by her closest of companions, she will find herself with a difficult choice: Choose her pride as one of Nightmare Moon's finest, or the one thing that brought joy to her life.

Written for the Appledash Contest #4, featuring: "A Place Outside of Ponyville", "Deepest Darkest Secrets"