4. Amadeus Cho... Sort Of
There are currently only two unallocated character names on IMDB for Age Of Ultron: the first is Andy Serkis (who has already been dealt with) and the second sits beside Claudia Kim, whose character has so far resisted definition beyond her own assertion that she is "a doctor/scientist who is friends with Tony Stark". At least that was the case until Disney released a captioned image of the Avengers enjoying some downtime that included her and the name Dr Cho. It might be a coincidence (unlikely since Marvel know their own lore), but there's a reasonably substantial supporting figure in the MCU by the name of Amadeus Cho - male in the comics, but not definitively so (his powers and role have nothing to do with his penis after all). This would actually be the second appearance for Cho, having played a supporting role in The Incredible Hulk, and having been very much a man. Why She'll Appear In the comics Cho is very much an advocate of Hulk's inherent good: his life is saved by the biggest Avenger and he believes his aggression is only a reflection of what other people project. If Tony Stark is genuinely exploring ways of controlling Hulk (he must be since he built the Hulkbuster) it would make sense for the sake of balance to have someone arguing for a humane treatment of him even as he unravels. And of course Cho plays a supporting role in World War Hulk, teaming up with Namor to try and stop Hulk's rampage. It might be a Hulk-sized leap, but does that mean WWH is genuinely coming?