Long ago in a distant land, Ivo Robotnik, the egg-shaped master of science, unleashed an unspeakable evil. But a brave blue hedgehog wielding supersonic speed stepped forth to oppose him time and time again. Before their latest confrontation reached its climax, the villain tore open a portal through time and space, and flung him into another world where magic and fantasy are everyday reality. Now the hero seeks to return to his world, and stop the mad doctor from conquering this one too. Along the way he'll meet new friends, new enemies, and just maybe something a little more. All while the fate of two worlds hangs in the balance.

Hang on to your seats boys and girls, cause we're breaking down the walls between dimensions.

Now on TV Tropes.
Cover art by BroDogz.
Sonic the Hedgehog universe, set directly after Sonic Generations.
MLP universe, set just before the end of Season 2.

Edited by, Jet Storm, Typoglyphic, Bok, and RobKuro85.

After some inspiration from from my good pal Gunflame, I'm throwing my hat into the ring for a good Sonic/MLP crossover. And I aim to give it the much needed improvement in quality that's so desperately needed with this particular crossover genre. I'll strive to make this one of the premier Sonic/MLP crossover stories on the web.

Thank you and enjoy.

Featured: 3/3/22, 6/18/23, 6/26/23, 1/1/24, 1/27/24, 3/14/2024

After losing both his mother and his father, due to a group of villains attacking his home, a young Sly Cooper is sent to a nearby orphanage with his family's cane in hand. There he finds Murray, Bentley, Gilda, and Derpy Hooves, the four people that he would eventually come to call family one day. Together they practice their individual talents and pull off some successful heists, all while searching for clues as to the whereabouts of the Fiendish Five, the people that took out Sly's parents... as well as recover the pages of the Thievius Raccoonus.

All of them must deal with the tests and challenges that come with being in a gang of thieves, especially when some tests will push them to their breaking points.

(Sly Cooper/ MLP crossover)
(Part of the Universe 13 story series, though reading the other stories is not required)

This story is a sequel to Phantom War I: Rise of the Consortium

With the 2nd World Power, the Griffin Kingdom, under the control of the Phantom Consortium, Danny became Emperor of the Griffin Lands. His darkness is spread and corrupting the griffins to his will. Now, he plans to take over the another world power to bend to his will. However, he discovers something that makes the conquest much easier....That world power is currently in a Civil War! Making his move quickly, he decides to help the rebels take over. However, while the rebels and the Consortium work together, another former NLR ally help the government against the Consortium and Rebels. Can Danny and his Consortium fight the 2 NLR allies or will they fail?

This story was after Equestria Wars Episode III: Rise of the Equestrian Empire but before Equestria Wars Episode IV: Shadows of Equestria.

Thomas Jefurrson is returning home from Griffonstone, after helping the Griffons unite in revolution, to return home to a free Equestria. Little does he know of the commotion currently going on in the Canterlot Courts.

Inspiration

Rainbow Dash and Gilda used to be friends. Used to be, but no longer. Gilda wonders just what went wrong, trying to shoulder the blame on Rainbow Dash. In the end, none of it matters, as life moves on regardless.

But loss is never as simple as moving on. It's the simple things that remind us of what we've lost.

Seeing the poor dragon at his wits end trying to woo Rarity, Gilda decides to give Spike some tips and help him gain the mare of his affection. Although she finds him slightly annoying, he starts to grow on her. And she soon learns that Spike has taken a liking to her as well...

Maybe too much of a liking.

Deidara the mad bomber gets sent to Equestria. How will the ponies handle the explosion loving artist? Will he alienate them with his mental instability? Will shenanigan's ensue? I have no idea!

Note: You don't have to be familiar with the Narutoverse to read this story.

Cover made by Sandy--Apples. Link to her deviantART account here.

Gilda accidentally goes to a gay bar.

The most wanted mare in Equestria, Twilight Sparkle is the greatest thief in the world. As she follows in the hoofsteps of her grandmother, Twilight Twinkle, she's joined by friends and chased by family, all while trying to make a few bits!

An alternate universe fiction where Twilight Sparkle never entered Celestia's School for Gifted Unicorns. At least, not without a set of lockpicks. Gilda is her closest ally and friend, and a skilled marksman with her crossbow. And of course there's Rarity Belle, who can wrap Twilight around her hoof with a wink and a smile - and usually picks her pockets in the process. With friends like these, Twilight keeps one step ahead of Shining Armor and tries to get her hooves on all the bits she can carry.

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Special shoutout to Ampris for the cover image. Check her out on twitter at @AmpDragoness - careful, some of her art is NSFW.