A Juggernaut, one of the most deadly foot soldiers on Earth, wakes up from cryosleep to find his ship crash-landed in a foreign location. With seemingly nobody surviving but he, the Juggernaut dons his armour for a final time and prepares to go out guns blazing.

When he makes it outside, he is confronted with something that will shake his very foundations of life.

Written for a friend that has supported me since the beginning.
Cover image thoughtfully recommended to me by Ironwolves21.

TVTropes page yay!A human arrives with a house in Ponyville. The Mane Six, and Princess Luna must deal with this new arrival. But not everyone agrees how it should be handled, not everyone agrees on what danger it represents, or the benefit it can be to Equestria.

The inhabitant must also deal with the new rules and conventions of this new world it knows nothing about, as well as the mystery of its appearance, and the incongruities of its arrival.
TVTropes page yay!

Pinkamena "Pinkie" Diane Pie is Us. In crazy brilliance, We made Pinkie so strange that We would never be suspected, and it worked until the very end. An end that came about, not because We failed, but because of inescapable circumstance.

Now, We must run.

We do not want to think about what they will do to Us if they catch Us.

Stranded on a hostile, alien world, Twilight Sparkle and Rainbow Dash must depend on one another and a fellow alien castaway if they want to return home to Equestria.(originally published on FFN)

Tiberium. The infamous green crystal that destroys entire worlds in its wake of global proliferation. It has been a little over a century since the Tiberium threat was first wiped out on Earth, and with it, the primary vestiges of the Brotherhood of Nod. When the GDI advanced humanity to the stars, they found that Earth had not been the only target of the alien Scrin: dozens of other worlds had already been claimed by Tiberium, and the Scrin returned in full force, attacking human colonies across space, stopping human expansion. To fight back, the GDI undergoes a reformation to become the Interstellar Defense Intiative (ISDI) and enacts the Hallman Directive, designed to stop Tiberium spread wherever it may be; such a protocol brings the reincarnated ITC Methuselah to a planet being ravaged by the green crystal, and the forces under Commander Martin Alexandra deploy to stop the threat.

Crossover Material: Command and Conquer - Tiberian Series/MLP
Rated Teen for Graphic Violence and Language

In the 31st Century, humankind has spread to thousands of planets in the Inner Sphere. Once united under the glorious banner of the Star League, the Successor States and their noble houses now fight bitter wars over the scraps of empire. When a JumpShip carrying a special task force from the Federated Suns suffers a catastrophic misjump, the occupants find themselves stranded above a strange, beautiful world at once alien and eerily familiar.

Meanwhile, in the peaceful realm of Equestria, Ponyville’s resident bookworm , Twilight Sparkle, has stumbled upon hints of a secret buried for centuries. A secret that may lay bare long-forgotten aspects of Pony history and culture.

Our story begins on the planet Valexa, where the beleaguered Militia has launched a last-ditch effort to call for help against overwhelming odds.

Written with those who are not familiar with the BattleTech/MechWarrior universe in mind.

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