Avengers: Age Of Ultron - 13 Biggest Questions We Want Answered

2. Will Thanos Make An Appearance?

We've known since the first Avengers movie that Thanos definitely exists in the Marvel Cinematic Universe. In the mid-credits scene of the movie, he was revealed to be the mastermind behind Loki and the Chitauri's invasion of Earth and he is set to be, at the very least, a presence in the upcoming Guardians of the Galaxy movie. He is also touted to be the main villain in the third Avengers movie - the sequel to Age of Ultron, essentially - so will he appear again in Age of Ultron itself as a preview of his big performance in the third Avengers outing? Just a single scene from Thanos would drive fans crazy. Having him watching the chaos unfold as Ultron attempts to take over the Earth, waiting in the wings for his opportunity to strike, and maybe uttering a single line of dialogue would be fantastic. It's yet to be confirmed if he is going to appear at all, but it will be a big disappointment if he doesn't.