Deadpool officially becomes part of the Marvel Cinematic Universe, the biggest movie franchise in the world. It’s an impressive run considering that there was a time when there was never going to be a "Deadpool" movie. Had it not been for test footage being leaked, we wouldn’t be here today. Even the head of Marvel Studios still doesn’t know what happened, but he's glad it did.br br Nobody has ever taken credit for the test footage that was leaked online that gave fans a taste of what a "Deadpool" movie could be. When it happened, fans were instantly interested in seeing more, which ended up getting the first movie greenlighted. CinemaBlend’s own Sean O’Connell asked Kevin Feige if he has since learned what happened, and it turns out even he is in the dark.