Joss Whedon let it slip that a “brother/sister act” has been locked in for Avengers 2. Speculation has obviously focused on Quicksilver and Scarlet Witch for the spot. The Marvel Cinematic Universe is a tangled mess of who owns the rights to who. Technically speaking, mutants won’t exist in Avengers movies unless Fox gives up its rights.
I’m crossing my fingers for all of this to come together. The Maximoff twins are two of my favorite Avengers and true classics. They haven’t gotten much airtime in Avengers cartoons and are instead usually portrayed as X-Men villains. It’s an interesting and key part of their story, but it tends to keep their characterization flat. Quicksilver happens to get placed in the villain category more than his sister. Here’s hoping they give these heroes their due. It’s well deserved.