Princess Celestia and Princess Luna are leading together a combined Army of several different equestrian Races against an supposedly terrifying and unfeeling Enemy.

What kind of Threat are our beloved Princesses are really going to face?

A Warhammer 40K/MLP:FIM Crossover.

Special Thanks goes to ARchy4288, Tyrannosaurus_Tux and AlicornPriest for Editing, Proofreading and otherwise helping.
I can only recommend those guys.

This story is a sequel to The Sun, the Infinite, and the Divine.

Trazyn the Infinite and Orikan the Diviner are back in Equestria. That time, however, Orikan is frustrated. The poor thing is lost in the comprehension of what has happened to the time thingy after Starlight's bizarre adventure with Twilight... and Spike. Yeah... him... Forgot about our little fella.

Anyways, in brief: Orikan is confused about the wibbly-wobbly, timey-wimey stuff caused by magic, and everyone of importance is told about our bombastic duo.

Lug wasn't the smartest. He knew that. And he was fine with that. As long as he had a club to swing or a ripper gun to fire, he was content, and there wasn't much thought needed beyond that.

And like many other Ogryn, he was content to serve the Imperium and it's interests until he died.

Until one fateful space skirmish with the forces of chaos, a drop-pod sent him careening through the warp, and soon after, into the Land of Equestria.

A world made up entirely of xenos, most of whom were small, fluffy, and colorful!

Lug likes it here already.

[Inspired by Warrior Tier's 'Ogryn Story' video.]
https://www.youtube.com/watch?v=5oNpb0dLNhE

This story is a sequel to Iron Hearts: Book 3 - The Sept Lamman

An MLP/Warhammer 40K crossover, part 4.

The Tau threat has passed. The fleet that once thought to sweep aside the tainted pirates of the 38th Company has fled the system. The Lamman Sept is broken, demoralized, leaderless...
... And victorious.

With Lamman's plan put into motion, an alien horde hurtles through the Warp toward the Centaur system, its soldiers without number and thirsting for violence. Equestria's heroes must find a way to stop them, or the entire planet will be overrun with ease and its inhabitants butchered. While they could afford some pretense of neutrality and disinterest in the fight between the Iron Warriors and the Tau, now it is their world that lay in the crosshairs of the foe. Ponykind will need help to survive, and they look to the forces of Chaos for aid. But is there any hope to be found in the darkness?

EXPLOSIONS ARE IMMINENT.

(Dark humor warning; mild grimdark)
(Cover Art by Ahrimatt)
(This series now has its own TVtropes page!)
(This series is a contestant in the Tournament of Canterlot, a charity event to raise money for Syrian refugees! Go here for details and donations!)

This story is a sequel to Iron Hearts: Book 1 - Planetfall

An MLP/Warhammer 40K Crossover, part 2.

Celestia has handed down her order. The Iron Warriors must be defeated and driven from the planet, lest the corrosive grip of Chaos infect their world. With great reluctance, Twilight and Company depart for the Iron Warriors fortress-factory in order to confront the Chaos Warsmith. However, in this mission it is not the might of the enemy that will be their greatest challenge, but their own burgeoning friendships with the admittedly less-than-saintly members of the 38th Company.
At least until the Iron Warriors actually consider them a threat. Then it's totally their military might that will prove to be their greatest challenge.
All the while, the Tau forces lick their wounds and plot their next move. They are far from defeated, and the Iron Warriors have little inkling as to the aliens' true purpose.

MORE EXPLOSIONS!!

(Dark humor warning; minor grimdark)
(Cover art by Nicholas Kay)
(This series now has its own TVtropes page!)
(This series is a contestant in the Tournament of Canterlot, a charity event to raise money for Syrian refugees! Go here for details and donations!)

Life is crazy. Never mind the whirlwind that was winding up in Equestria in the first place; being married to an alicorn ex-princess doesn't exactly lend itself well to a quiet lifestyle. As such, your little hobby of building and painting Warhammer 40,000 models offers you some nice, calm respite.

Now, Celestia, who has been feeling self-conscious about not being able to relate to you, wants you to teach her about the hobby. You're more than willing to do so, and you're a very patient man.

Unfortunately, she isn't a very patient mare.

Cover art partially edited by Shadow of Death.

An MLP/Warhammer 40K Crossover

The Iron Warriors 38th Company has landed in Equestria, entrenching themselves like a barbed hook. They hunt the aliens of the Tau Empire, intent on destruction and pillage.
A small squad is dispatched on a reconnaissance mission, only to find that there is intelligent life on this world besides the feuding space-farers.
Will these improbably adorable and friendly equine aliens turn the damned warriors of Chaos from their blood-soaked path, cleansing them of their dark legacy with the magic of friendship and harmony?

No.
No, that isn't happening.
EXPLOSIONS!!

(Dark humor warning; limited grimdark themes)
(Cover art by Nicholas Kay)
(This series now has its own TVtropes page!)
(This story is a contestant in the Tournament of Canterlot, a charity event to raise money for Syrian refugees! Go here for details and donations!)
(Featured on Equestria Daily 8/20/15 )

It is generally not intended for the Mechanicus to be the ones making first contact with a new race of Xenos. Brother Gentoo has the dubious honor of being stationed on Equus, for reasons that nobody can really explain, because the explanation was taken out back and shot by someone three or four links up the chain of command. Frankly, he's done this song and dance before. The Mechanicus are used to bending the rules a little to ensure that the Imperium's gears continue to turn.

This is how Brother Gentoo ended up being the one to make first contact with the inhabitants of Equus--a group of oddly-colored, unusually intelligent equines.

And then one of them asked him how lasguns work.

This story is a sequel to The Descent into Madness

Two years have passed since Rainbow Dash returned from a galaxy that knows only war alongside Applejack and the splintered remains of the once proud Swooping Pegasi. Now, as in the wake of her first return, the world of Equis has rocketed forward, combining knowledge and technology of both the ancient Eldar and the young and vibrant T'au. No matter how much any may wish it however, no one touches war and leaves it forever.

When ponies start showing up dead, torn apart in brutal ways that would put even the most savage of Everfree beasts to shame, the blame falls solely on a singular pony. Once more, Rainbow Dash must fight for her life and everything she holds dear. She is not the same pony she was in her youth, her actions heinous in the extreme and her mind shattered by the horrors of what she has seen and what she has done.

As old enemies rise and untied strands become knotted, lines will be drawn for every creature on Equis, answer will be given, and finally, the world will see what lies at the End of the Rainbow.
------------------
This story is a sequel to The Descent into Madness which is itself a sequel to Swooping Pegasus. Reading both isn't required, but I would highly recommend it.

Artwork has once again been done by the massively talented El Mutanto.

This story is a sequel to Swooping Pegasus

Rainbow Dash has been back in Equestria for four years, but the planet has not been idle. The knowledge that they are not alone has catapulted Equestria forward. Reverse engineered technology has pushed the world into a new golden age. Leading the way in new Arc-tech developments is Twilight Sparkle, her discoveries and inventions seeing use across the length and breadth of Equestria. Her latest invention is set to be the most influential yet, the crowning glory in the Element of Magic’s scientific career. When something goes wrong however, and Applejack is forcibly teleported from the boundaries of the world, only one pony has any knowledge about where she might be. But even she can’t do it alone, not this time. Luckily, she won’t have to.
Enter the Swooping Pegasi, and watch their descent into the darkness.

Now with a sequel: The Descent into Madness

This story is a sequel to Swooping Pegasus. I would recommend reading that story first to understand some of the bits in this story, but it is not 100% necessary.

Featured a fair amount of times, which I am personally very proud of XD
Thanks so much.

Rated Teen for Violence and Grim dark references

Just a heads up, this story is going to be much darker and much more violent than the first one.

I wanted to add other character tags, but didn't have the space. Also includes Spitfire and Lightning Dust.

Also, a big thanks to my Creative Consultant, Brother Malachai . This guy helped me flush out a load of ideas, as well as giving me some awesome new ones, so big thanks to him.

Artwork has been done by the massively talented El Mutanto.

Enjoy