The footage from a scrapped Avengers tie-in video game has hit the web, and the unused animation reveals a villain who we've all suspected has been waiting in the wings. Spoilers!
This footage comes from a former THQ employee who was charged with animating an Avengers video game. The game was eventually junked, so the animator posted some of its sequences on YouTube under the title "Test Footage & Concept Art Video Game Adaptation Of The Avengers."
I'm not sure what the singing mouse has to do with the heroes, but you can definitely see Thor and Captain America duking it out with some Skrulls. And given that we've been suspecting the Skrulls for a while, this only makes their extraterrestrial malfeasance seem more and more likely.