Edward Blake (Morgan) was the youngest member of the Minutemen — and also the most violent, seeming to have a blood lust that the others did not. His attempted rape of Sally Jupiter got him kicked out of the group; they later had a consensual affair that produced daughter Laurie.
In the 1960s, the Comedian began working as a government operative alongside Doctor Manhattan to help the US win the Vietnam War. He also later implied that he was behind the murders of Bob Woodward and Carl Bernstein before they could reveal the Watergate scandal and also the execution of President Kennedy, all on President Nixon's orders.
It is Blake's murder in 1985 that kicked off the events of Watchmen.