The Rainbooms were on a field trip to the laboratory in Canterlot City. But then suddenly they became bonded with a race of aliens called the Klyntar they need to learn to work together with them as they help a man named Eddie Brock after he lost everything. But he might regain a new life after they take down the evil weaponized Riot.

Join Fluttershy and her friends as she travels to the past to bring long-extinct species back to the present day and give them a second chance.

Spike awakens within the Realm of Ninjago after being sucked into the Crystal Mirror after it's been behaving strangely, as a result after he and the Mane 6 investigate it, he is sucked into the Mirror upon hearing a strange voice, and the Mirror is broken which prevents him from coming back in any known way.

Spike awakens on the doorsteps of an old Monastery and is found by a man named Master Wu, who takes him in and lets him join a team of Ninja who all have cool Elemental powers, despite not having any powers.. yet, he's trained as a ninja to unlock his own potential and find his calling. And now Spike's life is being a part of a team who can be a new family with him, and hopefully he can find a way home one day..

Magic continues to leak from Equestria to the human world. Fortunately, Twilight Sparkle's inventions have been able to track the magic-infused objects, and the Rainbooms set out on yet another adventure.
The bad news is the items have been moved to Gotham City. The seven young women will have to dive head-first into the most crime-ridden city in the country, hoping their magic abilities will be enough to protect them, and hoping they can avoid a confrontation with Gotham's resident vigilante, the Batman.
Then again, trouble has a habit of finding them.

My attempt to cross Equestria Girls with my favorite cartoon of all time, Batman the Animated Series. Coverart by Little Tigress

This story is a sequel to Equestrian Omni-Hero: Destroy All Aliens

A new summer vacation has begun in Equestria as it comes with a new adventure. Now Helix Watch and his team, known as Alien Force, already for the next level as a Omni-Key unlocks a hidden power up within his Omnitrix. With this power up Helix now has new armor, new aliens, new villains, a new world that is literally below Equestria, and a new... Antitrix?!

Looks like Hero Time is about to get even wilder with an old bully from Helix's past around.

This story is a sequel to Equestrian Omni-hero

Everything seemed to be going well for Helix. With his alien powers, there doesn't seem to be a thing he can't do. From saving the lives of the innocent, to stopping evil from doing its dirty work.

But things soon take a turn for the worse. Not only does he get grounded, but a mysterious glitch in the watch prevents him from changing back to normal. And what's worse, he finds himself getting attacked by a psychotic mechamorph whilst an unusual Way Big suddenly appears in the city. Helix will have his work cut out for him, for he and his friends will need to fix all these problems before they get out of control.

(Think of this part of the series as the My Little Pony movie Style)

During the time Thorax and Ember left ponyville after their argument with Spike, Ponyville is unexpectedly attacked by strange apes that have come for something, they proved to be a strong and deadly foe against the mane 6 which brought fear to everyone, but they weren't here for them, they were here for a certain purple dragon.. Spike. Spike tries to escape the monster's grasps, but he unfortunately is captured by them, and he is taken to a different world before his friends could rescue him, leaving him trapped in a new world.. alone.

Spike wasn't one to give up though, he came up with a way that got himself free from the apes, and he fled for his life to live, it left the apes to start searching for him after he fled, while their master is waiting for the report. During Spike's escape, he runs into a Purple Dragon like him after escaping into a swamp, the dragon's name is Spyro, and with nowhere to go, and Spyro having a kind heart, Spike's taken in by him and joins him and his little brother Sparx with. Spike's life has changed completely, and he and Spyro are about to go on a journey that will change both they're lives forever..

This story is a sequel to The Omnitrix Hero

A month after defeating Shadow and his Negative Ten, Flash is still getting used to his new Ultimatrix. Other than that, things seem to be going well. At least until a hole opens in the sky.

Just when Flash thought he could take it easy, he finds himself meeting another teen with an alien watch. And as threats from old enemies make themselves known, the two must come together in order to save their worlds.

It's the battle of the millennium, with everything they love on the line.

Written with the help of SuperSonicHeroes

Art by SlidDiamond3214

TVTropes

This story is a sequel to Transformers: Iron Hearts

After the war on the Railway, the Autobots continue to serve and protect their new home planet. These are the stories of their adventures. As the war goes on many things will be learned from Cybertron history to advance science. Along with learning the magic of Friendship.

A My Little Pony/Mario Crossover

Twilight attempted to fix Tempest’s horn but things went wrong as Spike and Grubber got zapped and now they needed to team up to find a way back home but they found out they ended up in the Mario World so they team up with Mario and his friends to not only save their Princess but find a way back home will Spike and Grubber ever get back home or will they stay, Read to find out their fate.