Anonymous asked: Hi, this is probably a silly question, but someone recently told me that Natasha is supposed to be have been born in the 1920s and is the result of a Russian super-soldier-esque program? Was this ever true? Is it still or has it been retconned? Or is she 100% pure human?
It’s true, and still current in mainline Marvel continuity. Natasha was an orphan adopted and raised by a soldier, Ivan, and the Battle of Stalingrad has been an important part of her backstory since just about the very beginning. (I have a “secret origins” tag where I go into more detail.) When Ivan was mortally wounded, Natasha accepted the KGB’s bizarro healing serum and agreed to become their agent in order to save him.

There’s a bit of inconsistancy whether the treatment did anything beyond slow her aging. She isn’t usually shown to have Steve Rogers-esque strength, though iirc the Official Handbook to the Marvel Universe gives it to her.
In the Ultimate universe, she’s similarly vaguely enhanced.