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!)

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 4 - Emerald Dawn

An MLP/Warhammer 40K crossover supplement.

The ponies that have joined the grim and unheroic warriors of the Iron Warriors 38th Company peer into the pasts of their sapien friends. They learn what made them, what drives them, and, just maybe, what may save them...

(Warning: experimental writing techniques, perspective shifts, classical grimdark, and much less pony than usual)

This story is a sequel to Iron Hearts: Book 2 - Ferrous Dominus

An MLP/Warhammer 40K crossover, part 3.

The formal negotiations between Equestria and the Iron Warriors have failed. Yet peace and even cooperation between the harmonious ponies and the corrupted militants blooms in the dark corners of Canterlot and the open streets of Ferrous Dominus. The Elements of Harmony are safe, trade flourishes, and cautious meetings grow into lasting friendships as an unsteady calm descends upon both forces.
Even the Tau threat seems to have mysteriously vanished as the Iron Warriors refuse to assault their hideouts and risk springing the traps of the Fire Caste.
But the Tau have not vanished. The Lamman Sept of the Tau Empire, the Fire Caste's hidden dagger, have come to grips with the slumbering giant looming over their doorstep and have moved forward into the final phases of their plan. Fleets ply the void, hunters stalk the orchards, and in the depths of the badlands a strange device is rapidly assembled for purposes unknown.
The Tau alone know that time is running out, and more than just the fate of Centaur III hangs in the balance.

SIGNIFICANT POSSIBILITY OF EXPLOSIONS.

(Dark humor warning; minor 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!)

Midnight Storm has had a hard life. She's wandered from city to city for the past three years, and they've all eventually run her out after they've found out what she is. Against her better judgement, she's placed her last hopes on the small town of Ponyville.

The residents here are nice enough, but when they find out what she really is, will they accept her, or drive her out like all the others? And when Celestia finds out about her, what plans does the Princess of the Sun have in store for the mare?

Cover image by Valkyrie-girl

Story now included in The Goodfic Bin

Pandinus Imperator (You can call him Pan, he won't mind) is knocked back in time during the Canterlot Invasion, and accidentally kills King Sombra on arrival. Instead of being executed, the changeling is surprised to find himself being hailed as a hero, and is promptly put on the throne as the new monarch, the Crystal Emperor. However, Pan now faces a great many problems, among them Celestia and Luna, who seem certain that the changeling is secretly up to no good, as well as several political factions secretly plotting to undermine his reign. There's also the tiny problem of the constant snowstorm that threatens to cut the city off from the outside world permanently.
The Crystal Ponies need a hero now more than ever before. Why did they get a changeling instead?

We Has A TvTropes.

While not truly a part of Bucking Nonsense's Changeling-Verse, the same rules regarding changeling abilities and society apply.

Cover image provided by gabapple, used with permission.

Octavia Philamonica has always had a nice, quiet life in Canterlot. After getting attacked and gravely injured by unnatural beings, a dark figure comes to her rescue, but there was a catch. She was warned, but she took it anyways. Now the calm, collected Octaiva is now a Vampony and works for a secret organization ran by the princess of the night made to track and kill dangerous monsters along side other Vamponies and Ponies.

As she follows around her master, a one Fluttershy, she slowly learns how to give up her old Pony ways and to embrace her new, darker powers as a Vampony.

Just a normal evening of playing some video games with my friends until a bright mysterious light teleports us to the lands of Equestria-cliche am I right-. With our new strange powers and no known way to return home will Twilight and her friends be able to handle us and the strange occurrences plaguing Equestria. ( Also I would love constructive criticism. Tags and other characters will be added later.)

It's easy to hate a pony you don't know. The pony, whose name became the very definition of fear. The pony, who slaughtered thousands, if not millions. It's easy to hate what you don't know.

Sombra's life is shrouded in mystery. The long list of his crimes is known to everypony, but his real biography is unknown. Fight back your fear, and delve into the story of his life, from birth to imprisonment. Find out his every secret, feel his pain, his hatred, his love and his pride.

See how an innocent child was shaped to become the Eternal Weeper, the Bloody Emperor, the Demon King. See, how he earned these names, and why he walked the path he walked.

This story will contain gore, sensual scenes, disturbing ideas, mental disorders and very weird relationships.

Edited and proofread by: MessoriaAQ and Written Out
Note: This is a rewritten version! It's much higher quality than the beta version.
Cover art by: BillieW

Featured in Fiction Illumination on 18.11.2013. Big thanks to Cerulean Voice for featuring it!

[img]http://i.imgur.com/6MrWqNZ.png[/img]

In search for a replacement for his pet Daisy (his rabbit). Doomguy finds himself in Equestria right after Twilight enchanted Smarty Pants with the Want it Need it spell. Now what could possibly go wrong with a Blood Thirsty marine who just defeated the minions of Hell more than once?

You may experience some naughty words!

don't worry the ponies don't swear.