John Doe was born in an alternate reality, as a child he was always a germaphobe so deeply afraid of germs and disease. It was so bad to the point that John Doe was a shut-in child, he had zero friends and he never really had an opportunity to socialize with anyone at all in a meaningful way; leading to a significant lack in social skills and etiquette. Thankfully as John grew up his intellect grew to rival his lack in charisma, and he eventaully wound up working at a Research / Development firm for Medical technologies and experimental.

However John Doe and this Research Team had become too ambitious, and their project soon became a government-concern as they were working on a cure for cancer; the government in his reality had wanted to weaponize it. Very quickly this got out of hand, an outbreak occurred, and it wasn't long before the people of his reality were eating each other in the streets; a classic zombie apocalypse. John Doe survived for years on-end both due to his own will to survive and due to assistance from people who eventaully weren't so lucky, however one day as John Doe was attempting to make his way back to his lab in the city to try and engineer some way to cure this disease; he was pulled out of this reality.

John Doe found himself in a new world, it was much like his own before the apocalypse except the languages were so much different; it was like everyone had changed everything down to the street signs and the presidents and the nations of the world. John learned how to speak English, and a few other languages due to his incredible intelligence, and eventaully he crafted a fine alias for himself; finding work at the BoB as a Blood Doctor / Researcher in developmental, this organization was rather weird and strange as he had to sign an NDA apon beginning work there and they seemed to have some rather... Pecuilar folk going in and out of the facilities, but he learned to keep quiet.

John now spends his time theorizing and rationalizing possible ways in which he could return to his own reality; and fix the problem, however as time goes on he seems to also accept the possibility that he may be stuck here and maybe its for the better? If John is stuck here, perhaps instead of returning to his world, if even possible, he would just purify this one and make sure this world never got to the point that his did.