Doctor Manhattan (real name Jonathan "Jon" Osterman) was a nuclear physicist transformed into a godlike being by a radioactive particle test. Cold, distant, and easily distracted, he was instrumental in Ozymandias' prevention of nuclear war, and altered the timeline of Earth-0 as part of his experiments. Jon perceives time in a non-linear fashion. This means that he sees the past, present, and the future simultaneously. Likewise, he can grant others with this "atemporal" vision. While originally limited to only his perception of time, Jon later learned to view the timelines of others, as well as possible timelines that never happened. He was able to see the entire timeline of the metaverse when reconstructing the changes he made to it. However, this power can be blocked by tachyons, restricting him to only the present as the only facet of time that he can see and actively experience, blocking his atemporal vision from probing far enough to perceive the future.