Doctor Jonah was a physician from Melbourne,
Victoria, Australia and the host body of the Magistrate on Runaways. The Magistrate possessed Jonah's body for decades before being struck down by Nico Minoru.
Doctor Jonah was called from Melbourne, Australia to the United States of America to study the a very special medical condition. He believed the Americans were not interested in getting their hands dirty when concerned with potentially infectious diseases; however, he wanted to take the case, first, by adjusting the patient's medication. The "Preacher" began to ramble about how this was always the worst part - it's painful and jarring for both of us. He continues to explain that there will be a battle for control and little by little he will begin to lose time, until at last, it's all his. Then he will be gone. Jonah wants to help him with his disease and tells him that his battle is with your disease and not him. He's only here to help. The Magistrate then takes possession of Jonah's body, causing an explosion in the medical facility.
In Last Rites, Jonah briefly regains control of his body after the Magistrate is forced to leave his mortally wounded host. Karolina stays by her dad's side, crying and calling out to him. Jonah, however, doesn't know the young girl, asking who she was, but he succumbs to his wounds before she responds.