The Arc Reactor keeping Stark alive was slowly poisoning him, with blood toxicity reaching critical levels (19%+).
Operating under the alias "Natalie Rushman," she was embedded as Stark’s assistant to monitor his condition for S.H.I.E.L.D.. IRON_MAN_2
A Russian physicist and son of former Stark associate Anton Vanko. Vanko successfully replicated Arc Reactor technology to power electrified whips. His motive was personal vendetta against the Stark legacy. The Arc Reactor keeping Stark alive was slowly