Young Rose Autumn never knew her parents were robotic replicas, or that she was a hybrid of human and an alien race called the Progeny, but when the Phoenix Force manifested in her reality her secrets were revealed. Amber Hunt was possessed by the Phoenix and her battle with the X-Men and Ultraforce killed Rose's mother and damaged her father. Rose's horror at seeing her parents reduced to metallic parts triggered her alien DNA and activated her latent abilities. Siphoning off energy from the Phoenix Rose became Foxfire and separated Amber from the Phoenix. After her initial rush of power Foxfire collapsed and awoke in a hospital bed 50 years in the future. She learned her origins, that she was created for the sole purpose of being sent back in time to prevent an energy signature from calling the Progeny to Earth. Using her alien powers in addition to the power she stole from the Phoenix Force, Foxfire teamed up with the remaining superhumans in the Progeny-controlled future, even joining with the future version of Ultraforce, who welcomed the 'Stepchild of the Phoenix" into their team. Foxfire defeated the Progeny then jumped back to her present timeline
Foxfire's alien DNA allows her to turn her skin into golden metal that is virtually invulnerable. In her metallic form, she is superhumanly strong and fast. She can fly and fire blasts of thermokinetic energy as well as absorb energy, thanks to her Progeny heritage. When she used her power to siphon energy from the Phoenix Force, she gained cosmic fire powers, as well as the ability to time travel and jump between dimensions.