This and the next week see the broad release of Avengers: Age of Ultron, the newest movie of the Marvel Cinematic Universe (MCU), particularly their flagship movie putting together most of the characters from their various sub-series. This might be the right time to delve into all those various characters and their previous stories as well as the overarching continuity that holds them together. So due to popular demand we're starting a new biweekly topic challenge from 2015-04-25 00:00 UTC to 2015-05-08 23:00 UTC asking for any kind of question about any of the movies and TV-shows set in the MCU or about the MCU in general.
Once the challenge is over, we'll tally the results and winners (by question votes) here. Also don't forget to suggest and vote for new topics for our next possible challenge.