12 MIA Marvel Cinematic Universe Characters Unlikely To Ever Return

Age of Ultron sticks out like a sore thumb within the MCU. The creative differences between Joss Whedon and Marvel that persisted throughout its production are readily apparent when you consider how many things from it were dropped or not explored again.

One of these was the character of Helen Cho, introduced early on in proceedings. A world-renowned geneticist, she contributed to the creation of Vision and was ever-present in the background throughout the film, last appearing in its conclusion as part of the Avengers support team alongside Erik Selvig, never to be seen again.