Maya Hansen (Earth-81648)

Maya Hansen is a former Stark Industries scientist, who committed suicide after her research was stolen.

Extremis
Maya's primary research was a nanobot "healer", that helped with quick and effective healing. However, after it was a success and healed her burnt arm, she requested permission to turn it into a super soldier experiment. With Tony Stark's permission, and funding, she began to improve on the nanobots, and after several months completed it. However, one day her notes and the Extremis already prepared was destroyed by an unknown assailant. Weeks after, she was unable to remake it. With everything in his power, Tony tried helping her out, but she came to the (incorrect) conclusion that she'd failed her life mission, and jumped off the roof of the nine-storey Stark Industries Research Centre.

Alive Not Too Long
Aldrich Killian, having recreated Extremis with his own slight modifications, realised he needed Maya to finish it, as he believed not all of her research and notes were physical. Using his version of Extremis, he reactivated the nanobots in her dead body, bringing her back to life. Her body healed from the damage caused by the fall. He forced her to complete it, fixing the slight glitches and maximising his power. After she was done, he injected himself, and Maya found out that Extremis had worked perfectly as a super soldier process, and quickly injected herself with it. However, her body reacted and began to release heat signatures much more powerful than she should. Her entire form began to collapse, and exploded, destroying an entire block, an act that would later be put against the Mandarin as a terrorist attack.