Black Widow’s Yelena Is Natasha’s “Sister” With Some Ulterior Motives

Natasha and Yelena have a long and complicated history, reveals the Polygon. 

As the plot of the original comic book series holds, both women studied at the Red Room, a high-profile espionage school in communist Russia. 

They were subjected to some horrific experiences, including bodily manipulation. To cover up for this, the leaders of the elite institute erased the girls’ recollections, changing them to fond memories of ballet lessons instead.