There is a secret in Equestria. A secret the newly crowned Princess Twilight Sparkle doesn’t dare to believe. Like puppeteers pulling on marionettes, they have influenced Equestria for better and worse since the fall of Discord. So far they have been benevolent, but their potential for evil is vast. What’s worse, she doesn’t know their name. She doesn’t know their mission. All she knows for certain is one thing.

That they all seem to be zebra.

Discord holds the weekly meeting of the fan club for the television show 'My Little Human', a popular cartoon amongst fillies and foals, and especially adult ponies, nicknamed 'humonies'. The only members of their fanatic group? Himself and Lyra Heartstrings. Watch as they confound others with their love for the show, and the adventures it takes them on.

A semi-sequel to The Villains Anonymous Support Group.

Twilight has developed a device that can detect strange signals coming from outer space; signals from aliens! She gathers her friends so that they can all listen in.

But they may not like what they hear...

cover image courtesy of DocWario

I'd appreciate if everyone could keep the YouTube embeds in the comments to a minimum. The sheer number of them is putting a bit more strain on my connection than I'd like. I'm going to start deleting any comments with 2 or more embeds in them.

Rarity was just trying to do Rainbow's mane. Promise. But when those hairless THINGS showed up, she ran, leaving Rainbow tied to the chair with those creatures surrounding her. Now Twilight must go through the mirror once again, to save her friend. And helping her rescue Rainbow Dash is... Rainbow Dash. Humanoid Rainbow Dash. See what happens when human and pony meet for the first time... and whether Rainbow makes it out alive.

Sequel: Equestria Girls Series; Episode 2: Fluttershy

Twilight has always had a facianation for strange magics. Anything new, she instantly tries to find real world scenarios to use them. But during one of her bi-weekly sleepovers with Rarity and Applejack, she stubles onto an old magic book in the basement while playing hide and seek, its title reads "The Art and Form of Mind Swapping." Shenanigans will ensue.

Artwork by Bebopanimebabe and the picture can be found here!

Every once in a while there is one character that defies all explanation and baffles the minds of geniuses the world over. Today, two such characters will be thrown into the field and all will find out who will win.

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And remember... this is what I came up with without the hidden stash. Just goes to show you that you don't need to be high to produce something regrettable.
My Little Pony: Friendship is Magic belongs to Hasbro Studio.
Death Battle belongs to Screw Attack.
Other properties belong to their respective owners.
Rated Teen for mentions of weapons and use of the word h-e-double-hockey-stick.

Edit:
February 6, 2013: Remember back in last April when I thought this was going to be a one-shot?
Neither do I.

July 16, 2013: I hope I haven't made a terrible mistake by allowing fan fic suggestions for combatants. It'll take me forever to read through all of those works for potential abilities used. In other words, updating will happen at a pace that makes a snail appear to be performing a Sonic Rainboom. Oh well. It is what it is.

March 24, 2015: Spoilers are imminent when diving into this at any given point.

June 9, 2015: I may not respond to every comment, but I will read them. The same applies to any suggestions made in comments or PMs.
-Corollary (October 11, 2015): Multiple comments from the exact same user saying the exact same match up will not make the suggested battle happen any sooner. In fact, it may just deter me from even considering writing it at all. Please do not spam the comment section. Thank you.

Traveling back to when Cadence was born, some would wonder how she found out that she was the princess of love. Little do they know how much Cadence thought about it.

As a teenager, Cadence would question herself: What was she the princess of? Her aunt wouldn't tell her, merely saying that she had to 'seek out the answer' and 'you have to earn it like a cutie mark.' Eventually, her aunt gave in and agreed to help Cadence for a bit. But discovering the truth took much more effort than what Cadance thought.

TL;DR - Blueblood is a gritty alicorn superhero.

The coronation of Princess Twilight Sparkle… Blueblood can’t stand it! Somepony gets a pair of wings and suddenly they become royalty and the talk of Equestria! It’s just not fair!

When a mysterious guest offers him wings of his own and even more newfound abilities, how could Blueblood possibly refuse? The power is everything he’d ever dreamed of.

But when Blueblood discovers that he’s not the only pony in Canterlot with a mysterious benefactor granting them special gifts, he realizes that something nefarious is going on. Now, with his most bitter rival as his unwilling ally, Equestria’s most unpopular royal is going to have to find it within himself to be the hero Equestria doesn’t want, but definitely needs.

Cowritten by RainbowBob

After an Equestria-wide vacation Discord returns to Ponyville, with mixed reactions. During his stay he finds himself caught between his boredom and desire for chaos and not wanting to lose the few friends he has. Will Discord find a way to sate his desire for mayhem and still find a way to do good? What do you think? Just look at the title.
Inspired by HowXu on deviantart
Image provided by Tori-34 on deviantart

When Celestia messes up a spell big time, a new species of creatures appears in Equestria, along with these odd red and white balls. They seem to repeat their name over and over, and might turn everything upside down, and cause chaos for all.