The directors of Avengers: Infinity War revealed why Scarlet Witch's accent disappeared.
It's because the directors wanted her to be less distinguishable.
The fictional superhero is played by actress Elizabeth Olsen.
In earlier films she had a discernible Eastern European accent.
Joe and Anthony Russo decided to phase it out.
At the beginning of 'Civil War' that Black Widow is training her to be a spy, and two is she's been on the run, and one of the most distinguishing characteristics that she has is her accent.