Taskmaster is widely feared as one of the most dangerous mercenaries in the Marvel Universe. That's because his photographic reflexes allow him to mimic the fighting style of anyone he studies.

Even with their true identity shrouded in secrecy, the maniacal masked mimic is the biggest recognizable threat of Black Widow, and the latest supervillain entry to the Marvel Cinematic Universe.

Even diehard Marvel fans may not recognize them right away — Ghost (Hannah John Kamen), who can dematerialize to get herself out of jams; Taskmaster (Olga Kurylenko), who's a very good mimic ...