Scarlet Witch was shown to be emitting a red energy when we first saw her in the Captain America: The Winter Soldier mid-credits scene. This was no surprise - she emits a red energy in the comic books and she has a word that means "red" in her name. However, the Age of Ultron trailer showed her brother, Quicksilver, emitting a blue energy for the first time. Given that Baron Strucker seemed to suggest, in the same mid-credits scene that we first saw the twins, that Loki's staff - which apparently contains an Infinity Stone - could be responsible for giving people powers, does this means that Quicksilver and Scarlet Witch got their powers from different Infinity Stones? Loki's staff has a blue stone in it, while the Aether was red. Perhaps Scarlet Witch had already gained powers from being near to the Aether when it was on Earth, which prompted Strucker to use Quicksilver - who would obviously share DNA with his twin - to test Loki's staff on. We'll find out more soon enough. So there you have it - eleven things you probably missed in the leaked Age of Ultron trailer. Did you enjoy this article? Did you catch any of the things on this list in the trailer? What else might people have missed? Let us know your thoughts in the comments section below. And please feel free to follow me on Twitter!