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 )

All Dante ever wanted to do was lay back, relax, and - eventually - open and run his devil hunting business. He certainly never wanted to get involved in anything regarding the fate of multiple worlds, power hungry demon lords, insane cultists, and certainly not parenthood.

But then he got a party invitation from his brother...and on the way to the party, he found a tiny orange pony, who proves despite physics to be far more than a handful.
---
Part of the PWNY-verse.

Edit: New cover art by sanyo21

Magician pulls rabbit out of hat? Standard.
Rabbit pulls magician out of hat? Not so standard.
Psychotic lagomorph pulls filly magician with delusions of grandeur out of hat? Normal for here.
Lagomorph can't/won't put her back? Sounds like a case for the Freelance Police.

Sam and Max have handled many big cases, and their biggest are yet to come. However, it looks like there's someone else along for the ride...someone who refuses to be sidelined, is eager for the spotlight...and is too cute not to spoil rotten.

------------
Part of the PWNY-verse.

Edit: New cover art by EmmyWithVeri!

First featured on 6/17/2014.

Prodigy
Genius
Perfect

These are some of the titles many have bestowed on the virtuoso, Octavia Melody. Through countless hours of practice and studying, Octavia had become the most renowned musician in Equestria. With an abundance of fame and fortune, it seemed like she lived the perfect life. However, Octavia has lately been feeling that something is missing from her music.

A seemingly normal trip to Ponyville changes everything when she hears the sound of a fiddle. Following the music, Octavia arrives at an apple orchard. What she finds would possibly help her make her music whole again. As well as so much more.

This story takes place within Season 2 with a few elements from Season 3 mixed in.

Failing once in her attempt to take Canterlot and failing again in her attempt to take down Twilight, one would think Chrysalis would have cut her losses and let things be, but the queen has once again appeared, this time in broad daylight with no disguise and no army. Her weapon of choice? Diplomacy.

Now Twilight is having to deal with the changeling queen, but surely putting up with her antics will be worth the knowledge she's willing to provide about her mysterious race and the potential undiscovered agents still within their midst...right?

Takes place before Magical Mystery Cure and diverges from there.

With thanks to MisterGunpowder for proofreading and editing.

Revision History:

05/09/2015: Chapter 1 updated with millions of little corrections.
05/20/2015: Chapter 2 revised and edited with another million small and large corrections.
06/12/2015: Chapter 3 given a thorough editing and revision.
06/23/2015: Chapter 4 taken to the gutter and edited twice to be sure.
07/14/2015: Chapter 5 thoroughly brutalized with the editing stick.
08/03/2016: Chapter 6 finally edited. Yes, I'm still alive, dammit.
09/29/2016: Chapter 7 fell out of the editing tree and hit every editing branch on the way down.
10/26/2016: Chapter 8 has emerged from the editing emergency room.
11/17/2016: Chapter 9 found and edited. No casualties reported.
11/30/2016: Chapter 10 treated for whiplash after lightning fast editing.
12/22/2016: Chapter 11 edited. Chrysalis shot first.
01/17/2017: Epilogue edited. Time to hit the cider.

Princess Twilight Sparkle holds a wake in the memory of Derpy Hooves after a terrible accident tears the mailmare to pieces. This tragedy affects everypony in Ponyville, and close friends preparing for the funeral find themselves coming together in ways they never have before, sharing their deepest feelings, their tender memories, and their most delicate secrets. They even agree to take care of Dinky, fostering Derpy's orphaned daughter into a bright and promising future.

It would all be very noble if Derpy were actually dead.

Cover art by Darkflame
Special Thanks to Props and Warden

After the most important night of her career is ruined and its saboteurs not even so much as punished, Octavia's life changes. She begins to pursue a path that has never been seen before in Canterlot, where concertos and rhapsodies give way to controversy and rebellion.

A path where symphonies are composed with cans of spray paint.

Cover art used with permission by LuGiAdriel14

Lightning Dust lost her dreams and struggled in the world outside the academy until she happened to come across a small town, of which could’ve been more trouble than it was worth. However, she was determined to do whatever it would take to rejoin the ranks of the Wonderbolts, even if living in Ponyville among the crazy citizens and bearing the anger from her old rival were part of it.

Follow her experiences as she endures the eccentric locals, tries to keep herself fed, and interacts with unexpected souls who enter her life and help her remember things she had forgotten as a filly.

I was just hoping to get this last job done, always getting sent to this dimension or that, always doing the interests of others. Unfortunately, everyone's luck eventually runs out, and it looks like mine has ran out as well. Now somehow I got stuck in this place, in a foreign body, and things just keeps getting worse for me. What did I do to deserve this?
Note: This is not a HiE story.
Editors: Discord Kantus (Chapters I-XLII), Hyari (Chapters XXXIV and onward), Fourpony
Art: AlicornParty

When our protagonist awakens in the Everfree Forest, he is not alone. Transformed into a creature he once thought to be fictional, and accompanied by his close family he must find his way through this new land. Can he build a new life for them all in Equestria, and how will the ponies react to these strange creatures? Particularly when they find out about a certain TV show.

Comments and criticisms appreciated.

(Not a self-insert)

Thanks to Wadusher0 for the cover art.

Updated every Friday.

Featured on 05/09/2014 (or 09/05 if you're American)

Featured again 05/12/2014 Thanks again, everypony!

And again on 09/01/2015