As she was born to Tony Stark, (Iron Man) he had to leave when she turned four. Natalie, at age six, realized she had extreme power to carry on the Iron Man legend. When Tony came back from his mission, Natalie was ten years old and was already building her own Iron Man suit. Tony, impressed, took her to the Avengers and started to train her. When she turned 15, that's when Bucky joined them. Natalie had a secret crush on Bucky, and so did he. But they hid their emotions for each other well and stayed out of each other's ways very well unless they had to come into contact. Her mother is known to have died, and therefore Scarlet Witch takes care of her now.
