This story is a sequel to Rider on the Storm

For the briefest of moments, Anonymous wielded absolute power. He single-handedly destroyed the city of Canterlot, laid waste to Ponyville, decimated the Everfree Forest, and came dangerously close to annihilating the very Tree of Harmony itself. And he had an absolutely fantastic time doing it.
Right up until he lost.
Now he's stuck as a statue under the watch of the princesses he tried to subjugate, awaiting the time he'll be locked away forever, with the key no doubt thrown into a volcano. But from the very beginning, Anonymous suspected that the shenanigans of the good guys would cost him his victory at the last moment, and so he laid plans with his most loyal of subjects—all former soldiers of the Storm King he betrayed to obtain his power—to arrange for his release should the opportunity arise.
Unfortunately, he wasn't counting on the ponies calling in help from a faraway land. Enter the Four Princes of Zebrica, all wielding the same exact power that Anonymous did, and knowing a thing or two about how to put bad apples like him away for good. This is made even worse by the sorry state of Anonymous's storm beast forces, having hit hard times in the months since his defeat.
But not all is lost for the petrified supervillain. Because in a rare twist of luck, the Princes just so happen to unknowingly bring with them a zebra criminal with his own dirty little secret. A secret that not only secures Anonymous's release from captivity, but just might be the start of a horrifying new partnership, and with it, the birth of a new force of evil.
And of course, with all that going on, there's always the matter of the nascent Legion of Doom, plotting to bring their own age of darkness to Equestria as well...

Takes place during the final two seasons of Friendship Is Magic. With a few alterations here and there, because I HATE THE ANTI-FIM I HATE THE ANTI-FIM :bread:
Reading Rider on the Storm is strongly advised if you want any idea of what the hell is happening in this story.

This story is a sequel to Rider on the Storm

Shortly after slipping out of Twilight's new school on account of it's boring lessons, the Young Six spend some quality time hanging out in the old Castle of the Two Sisters, deep in the Everfree Forest. With plenty of food provided by their friend Sandbar, they settle in for the night, swapping stories about their lives.
Unfortunately, one of Sandbar's stories involves the attack on Canterlot by the late Storm King.
This brings back some traumatic memories about Silverstream's own encounter with Anonymous - one of his commanders - during his separate attack on Mt. Aris, and how she only just barely managed to escape his clutches. And although Sandbar understands all too well what she's been through, the rest of her friends are in for quite a shock when they hear her recount the harrowing experience.

A little thing written in a few days to shake off some pretty severe writer's block, with the initial excuse of making it a Halloween special.
Takes place during the Season 8 premiere, School Daze.
Reading Rider on the Storm is strongly recommended if you want any idea about what's going on here. I'm told it's a fun read.

Anonymous doesn't ask for much in life. Good friends, a place to sleep, and of course, the snoots of ponies to boop. There's nothing he won't do to boop those snootles, and he has traveled far and wide to experience the snoots of all known nations, races, and creeds. Yet there is one kind of snoot that he has been unable to boop: that of an alicorn.
That changes today.

A quick bit of silliness whipped up in a few hours. No, I don't know why, either.

Anonymous, asshole extraordinaire and a rotten egg by all accounts, has fallen on good times after being made a commander of the Storm King's vast armies. With the King's forces and equipment at his fingers, he's found great success conquering nations, sowing chaos, and kicking the asses of all walks of life. All while having a rip-roaring great time doing it.
But the day of the Storm King's biggest conquest to date - the nation of Equestria - looms just around the corner. All that's left now is the final few preparations for the invasion: loose ends to tie up, new weapons to seize, and even some co-commanders to annoy to no end. And once those are complete, Anon will be the first in line to take Equestria as his next conquest.
God help us all.

This isn't the first horse story I've written, but it is the first one that is prose instead of greentext. And I'm still a bit rusty on top of all that. Any and all feedback is greatly appreciated!