Natalie Allen was the younger sister of Barry Allen, known in Central City as the Flash. Technically, she wasn't younger than him. She was 4,986 years old. When she befriends Tony Stark as a 20-year-old boy, she meets people like her. She had never met anyone like her. Then, when Tony becomes the worlds next millionaire, he invites her to be apart of an initiative called The Avengers Initiative. Her life starts to change, when, for over 15 years after joining him and the Avengers, Thanos comes to earth, and he brings death with him.
All Rights Reserved