Yn is an anti hero who’s identity is unknown the avengers always try and fight her but fail every time she’s a girl who was red room trained but it wasn’t the red room it was another hydra facility for only some of the strongest girls she is ten times the person Natasha romanoff is but one day they finally capture her and Steve Natasha and Sam do not care for her wellbeing just answers but Tony Bruce and Bucky well they want to know her