Amy Park is a 16-year-old girl who lived in Phoenix, who has the fallout power of superspeed.

Amy used to go the high school in Phoenix (Phoenix High) until a few weeks before the Doomsday.

In Fallout, she says that, before she got her power of superspeed, she had always felt as if she hadn't had enough time for everything, but after she had gotten her power she felt as if she had more time to do things.

At the end of the book Fallout, Amy is partially safe in Kara's mother's old underground laboratory.