Kammala wannan jumla: Dr. Jonathan "Jon" Osterman mai kare kansa ne kuma mutum ne kawai da ke da iko. Ya kasance asalin masanin kimiyyar lissafi wanda aka canza shi zuwa shuɗi, mai ƙarfi mai ƙarfi bayan da ya lalace a cikin Injin Injin Injin Injin Injin Injin Injin Injin Injin Injin Injin Injin Injin Injin Injin Injin Injin Injin Injin Injin Injin Injin Injin Ya koma cikin ɗakin don dawo da agogon budurwarsa (wanda ya gyara), kuma ba da gangan ba an kulle shi a ciki lokacin da Subtractor ya fara ta atomatik. Osterman ya fashe a cikin atoms, ba tare da wani abu ya bar jikinsa. A cikin 'yan watanni, tunaninsa na zahiri ya yi nasarar sake gina jiki na zahiri don kansa, bayan da aka sake gina wasu bangarori masu ban tsoro. Bayan farfadowarsa, nan da nan gwamnatin Amurka ta tura shi cikin aiki, wanda ya ba shi sunan Doctor Manhattan, bayan aikin Manhattan. Ko da yake ya takaitaccen lokaci a cikin yaki da aikata laifuka, babban tasirinsa shi ne ya ba Amurka damar amfani da dabarun da Soviet Union a lokacin Cold War, tare da aikinsa mafi mahimmanci yana faruwa bayan da Shugaba Richard Nixon ya tambaye shi da kansa ya shiga tsakani a cikin Vietnam War, wanda ya haifar da nasara ga Amurka tare da shan kashi na Arewacin Vietnam da Vietcong, hanawa
rushewar gwamnatin Saigon. Tun da yake yana aiki ne ga gwamnatin Amurka, an cire shi daga tanade-tanaden Dokar Keene, amma yana ciyar da mafi yawan lokacinsa wajen yin bincike da ci gaban fasahar zamani, da kuma binciken kimiyyar lissafi. Shi ne kawai ke da alhakin sauyawa zuwa motocin lantarki (ta hanyar haɗa abubuwa da sunadarai da ake buƙata da kansa) kuma Veidt ya bashi bashi da haifar da babban ci gaba a fannoni da dama na kimiyya da fasaha. Sakamakon haka, fasahar 1985 ta madadin duniyar "Watchmen" ta ci gaba sosai. Bayan mutuwar mahaifinsa a 1969, ba ya ɓoye sunan haihuwarsa kuma ana kiransa "Jon" ko "Dr. Osterman".