Spike and Ember are transported to the Artisans homeworld as infants, without any memories at all, and arrive in time for Spyro's egg to hatch, leaving Nestor and the other Dragon Leaders with two purple dragons and a blue dragon, instead of just a single purple dragon. They decide to take it as a sign of great things to come and keep the trio together, letting the three dragons grow up as siblings while they teach them the value of teamwork and what it means to be a dragon, all while preparing them for whatever the future has in store for them.

(Spyro Reignited/MLP Crossover)
Edit: Dislike free from May 21st to August 1st

This story is a sequel to Dragon Ball Z: Daughters of Destruction

Sunset Shimmer thought it was over when the last of the displaced ponies returned to Equus and resumed their normal lives, even though she was the God of Destruction for their universe, the newly official Universe 13. What she wasn't expecting, however, was for the Grand Priest to call all the Gods of Destruction, their Angels, and the thirteen Kaioshin to Zeno's palace for an announcement that would change the face of the thirteen universes. There they discover that multiple universes would be required to take part in the Tournament of Power, where teams of ten from the chosen universes would be all that stood between that universe surviving or being erased from existence.

Even as the displaced ponies gather together for one last adventure, to save their universe in case they were called to battle once more, they know they must be careful, as the other universes weren't to be underestimated... and there was no telling just how powerful the fighters from the other universes would be.

(Dragon Ball Super/ MLP Crossover)
(Finale of the Universe 13 story series.)

Sombra, the dreaded King of Darkness, was defeated and his body shattered, but his dark soul survived the return of the Crystal Empire and went into hiding. Some time later it found a path between worlds, a mirror portal, and arrived in a place called Hueco Mundo, where it gained a new body to start a new life. In the process Sombra loses his memories and becomes a shell of his former self, searching for something that he knows that he lost while having no idea where to find what he was missing.

Along the way he somehow finds his way to Karakura Town, into the hands of Kisuke Urahara, and learns more about his new body than he could have learned on his own, before coming into contact with Ichigo Kurosaki and his small group of friends. From there he starts an epic journey to help them save another friend from a terrible fate, fight the people that were in their way, and face an evil that was hiding in plain sight at the same time... along with finding out what happened to his missing memories.

(Bleach/ MLP Crossover)
(Part of the Universe 13 story series, though reading the other stories is not required)
(Also, the story will not include the Fullbring or the Thousand Year War Arcs)

A month after Sunset Shimmer entered the portal that's located in the base of the Wondercolt statue, and disappeared without a trace, Adagio and her sisters decide that its time to investigate what really happened and see where the missing girl went. When they enter the portal themselves, however, they are brought to what appears to be another world without magic, until an explosion of some kind knocks them onto their backs and awakens something new inside them. Despite being wounded they help a survivor of the explosion to his feet and help him find his way back to his friends, while witnessing the power that woke up inside him.

When Cole MacGrath awakens from his ordeal he and the Dazzlings begin training with their new powers, while the Dazzlings try to control their excitement about having some sort of magical nature again, even if their new powers are different than their old ones. Once a few days pass the four of them venture out into the decaying city, determined to stop the Reapers and to find a way to save the city... while at the same time the Dazzlings learn what it means to truly be heroes.

(InFamous/ MLP Crossover)
(Part of the Universe 13 story series, though reading the other stories is not required)

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)