Drew Grey was a former member of the United States Army who underwent the Extremis treatment provided by Aldrich Killian.
Biography
Discharged from the United States Army, Drew Grey was contacted by Advanced Idea Mechanics to test a gene-controlling process known as Extremis. Grey accepted the offer and became a human test subject, grateful for the restorative effect it had on his body. However, the Extremis within him went critical and killed Grey.[1]