Shadow Nations: Gangs of New London
John is a medical scientist whose results and access to certain cures have improves the quality of life around Rushmoore. While his wife has long since gone missing, he still devotes what time he can to their daughter, Nina. Because he has no official backing, John will sometimes need people to help him with his research for the best of all the residents of the borough.
After his wife went missing, Tucker seemed to devote himself to his research almost to a sickly degree. While exact details of her disappearance remain unknown, many whisper that she was taken by a sickness John could not cure with the resources he had available on such short notice. The dedication he has to developing new cures gives his eyes an almost fanatical glint, and many consider not completely right in the head due to this.