Song performed by Bad City

Our World’s about to break.
Tormenting and Attacked
Lost from when we wake
With no way to go back
I’m Standing on my own.
But now I’m not alone (Avengers Assemble).

Always we will fight as one,
Till the battle’s won
with evil on the run
we never come undone

Assembled we are strong
Forever fight as one
Assembled we are strong
Forever fight as one

The intro to Avengers: Earth’s Mightiest Heroes: