Winter Widow

Winter Widow is the het ship between Natasha Romanoff and Bucky Barnes from the Captain America fandom.

Fanon
People like the ship because of their involvement in the red room, as well as the way their personalities interact. Natasha is portrayed as stoic and Bucky is portrayed as the guy you don't cross, according to the fans, this ship is canon in the comics.

Fandom
AO3