In Black Widow, we learn that the Red Room organization mind-controls at least some of its members, such as the Black Widows and
However, at least one member of the organization, Red Guardian, was involved of his own free will.
Was anyone else being mind-controlled? I'm most curious about the helmeted soldiers. They appear to have a lot of commitment to the organization and its leader but I don't remember anyone stating directly that they were being mind-controlled.