Dr. Manhattan was the only person with actual superpowers and the most powerful being in Watchmen created by Alan Moore, Dave Gibbons, and John Higgins. Since the original Watchmen series, DC Comics expanded the world with story arcs like "The Button" and miniseries like Doomsday Clock by Geoff Johns, Gary Frank, and Brad Anderson that brought Manhattan and Watchmen characters into the mainstream DC universe.
Source：https://www.cbr.com/dr-manhattan-watchmen-defeat-strongest-characters/
