Since he was a boy, Theos has dealt with Congenital insensitivity to pain. While he does not have an 'immunity' to pain. He does have a rather high resistance or ability to ignore. The massive downside is some injuries obtained are failed to be noticed. So instead of tending to the minor injury like one should, this unnoticed wound can grow into bigger problems that one normally would of avoided easily. Growing up was rather difficult, due to him not able to fully relate or understand others. part of it was from his disorder but not a large portion of it. His Congenital insensitivity to pain was more of the icing on the cake to his anti-social attributes.

Due to a car accident that should of killed him, Theos lost his parents and was orphaned. Thrown between foster homes was the least exciting upcoming for Theos. For he constantly fought with foster-siblings and superiors. (whether in school or at home.) His latest foster parent was the most successful with Theos. An elderly man who adopted him after a few to many brushes with authority. The man known as Edward had another son and daughter of his own, while wife had passed away three months prior to Theos' adoption. Edward proclaimed "Ana would of never allowed A bright boy such as yourself. Continue going down the slippery slope you were." Theos never understood why Edward brought himself into his family and home like he did. But it was an incredibly good influence despite how rough it was for him. From ages 16-18 Theos was placed into A martial arts class, but focused on pure defense and not offense. Edward figured this would teach Theos discipline, without further allowing his Congenital insensitivity to pain turn into A weapon. Surprisingly enough martial arts was another good improvement for Theos' psyche and mentality.

Theos was already living in his own home before the apocalypse started. A large question tugging at his mentality is if his foster-family is alive. However only signs of them escaping their home city and slight insinuations of death are the evidence Theos has. Though due to the world being in such a chaotic stage, Theos doesn't avidly search for them 24/7. Finding his survival more important, hoping that he crosses paths with any members of his foster-family. However seriously doubting he ever will.

Theos currently spends his time wandering, trying to find A 'safe' spot to seek refuge. Due to A brush with violent raiders during his adventures in this modern day hell. Theos was graciously left with A massive scar on his right eye/cheek/forehead. Theos isn't exactly seeking comfort from company of others.