So it was revealed today in a non-April Fools'-related leak that Julie Delpy and Linda Cardellini play supporting roles in Avengers: Age of Ultron. (Oh yeah, and Andy Serkis' character is exactly who you thought he was.)

But who could they be playing? Neither seems right for Carol Danvers, though she is rumored to be in the movie. Are there any established Marvel Universe characters they could be playing? Or, failing that, some non-MU characters new to the canon? Does this leave open the possibility of a crossover with the Before... universe, or even Freaks & Geeks? (In which case, Martin "Bill Haverchuk" Starr needs to appear as some sort of supervillain.) CAN WE WAIT ANOTHER THIRTY DAYS TO FIND OUT?!?