Avengers Age Of Ultron: 10 Biggest Moments Of Foreshadowing

9. Vibranium (Captain America: The First Avenger)

The very existence of vibranium in the Marvel Cinematic Universe hinted at countless potential inclusions in the Marvel Cinematic Universe, with one of those things being Ultron. In the comic books, in addition to being one of the many materials Ultron has used to build himself a body and the material from which Captain America's shield is made, it is also strongly associated with Wakanda and Black Panther (both of which are coming to the Marvel Cinematic Universe) - as Wakanda is where it's found in its raw form and Black Panther wears vibranium weave armour - and has been used to make things like the walls inside Avengers Tower and some of Hawkeye's trick arrows. It is generally believed that Ultron will head to Wakana in Avengers: Age of Ultron and use the incredibly durable metal to build his final form.