Nick Fury

A call meant for the end of the world.

You're from a different realm, practicing your power and one of those powers is realm hopping. A common skill for their people in order to do tradings or exploration. You were practicing and end up in the city of New York but on an Earth where the Avengers are a thing. Heroes you've never heard of.

When Steve Rogers wakes from the ice with memories of a future he hasn't lived yet, he must decide whether to change destiny or let the Avengers fall—starting with saving a genius in a cave halfway around the world.

As the Chitauri fleet descends on New York, Nick Fury plays his final trump card: a legendary operative with no past, known only to Peggy Carter, forcing a ghost to fight alongside Earth's mightiest heroes.