Avengers: Age of Ultron crossover.

Ultron’s plan had come to perfect fruition. There would be no more war, no more chaos, because the ones who caused it all would be gone. In just a short moment, the world would be saved from its true demon. Humans.

It would have all been so much simpler…if it wasn’t for them.

The Avengers.

As it is said, as it always will be, true peace can only be granted through countless innocent lives. In hindsight, the ponies were never that different from humans. Ultron’s plan is not yet over, and soon his strings will be severed…for the last time.

Big shoutout to Shrekzilla for his amazing job on the artwork!
Sequel: This War of Ours

This story is a sequel to From the Ashes

Twilight Sparkle and the others are friends with Earth's Mightiest Heroes! How cool is that?! Following their victory, the heroes of two worlds keep in touch, visiting each other, working on projects together, and doing all the things that friends do. These are their stories.

(Have an idea for a chapter? Submit it in the comments, and it will be considered)

The war between the Avengers is over. Neither side has won. The team is scattered. All Tony Stark, Steve Rogers, and the others can do now is try to adjust to this new status quo.
Until now.
Pursuit of mysterious thieves leads the Avengers to a new planet, populated by...colorful talking ponies. Oddly enough, these ponies may actually know something about conflict resolution and personal problems. The Avengers had better listen, because only together can they stop a sinister force that plans to bring both Equis and Earth to their knees.

Cover art courtesy of ameliacostanza.

This story is a sequel to From the Ashes

Equestria and the Avengers have formed close friendships. Friendships that may eventually help form the foundations of the relations between Earth and Equis.
There's only one man who stands in their way: Victor Von Doom. With his army, formed from the enemies of the Avengers and the Elements of Harmony, Doom intends to bring both worlds under his dominion. Separated across two worlds, the two teams must find a way to stop him, or risk losing everything.

(Takes place after Thor Ragnarok, and Father Knows Beast. Ignores Infinity War)