Jon Osterman is a fictional character from the graphic novel Watchmen, created by Alan Moore and Dave Gibbons. He is also known as Doctor Manhattan, a superhuman with god-like powers, including the ability to manipulate matter and perceive time non-linearly. His transformation into Doctor Manhattan occurs after a nuclear accident during an experiment. As a character, Jon Osterman represents themes of isolation and the consequences of power. His detachment from humanity grows as he becomes more powerful, leading to complex interactions with other characters, such as Rorschach and Laurie Juspeczyk. His story explores the moral implications of his abilities and the nature of existence.