In the DC Rebirth we see that Doctor Manhattan , from the graphic novel Watchmen by Alan Moore and Dave Gibbons , removed 10 years from each character .
Rather , for reasons yet unknown , it is revealed that Jonathan Osterman / Doctor Manhattan ( from the Watchmen universe ) interfered and removed approximately 10 years from each character , which resulted in the younger age of heroes in the New 52 , along with the unexplained resurrections of several known deceased characters , and the loss of legacy and previous relationships .
DC Rebirth