To keep people up to date, recently revealed characters are
Capcom: Chun-Li, Trish (from DMC), Amaterasu (From Okami)
Marvel: Dr. Doom, Super Skrull, Thor
Due to my love of Vikings, lightning, and mystical hammers, I am quite excited for the arrival of THE SON OF ODIN
Also I saw the silhouette of Viewtiful Joe in one of the newer trailers.