For those that don't know from the comics, Taskmaster is someone that mimics the abilities of those around him.

In the trailer, you see him using a shield like Captain America, you see him using a bow like Hawkeye, you see him swing from a tether like Spider-Man, and use the same fighting moves as Natasha.

Could be a fun villain to keep around for the future.

By the way, this movie is set between Civil War and Infinity War if you didn't know the timeline.