One of the most prolific writers in comics, particularly in the Silver Age. He took over scripting duties on Wonder Woman after William Moulton Marston's death, and handled the character's transition from the Golden to the Silver Age. He also created Barry Allen, the second Flash, for editor Julius Schwartz's superhero revival of 1956, as well as writing and editing DC's pioneering war titles. His creations include Sgt. Rock, the Unknown Soldier, Barry Allen, Ragman, the Losers, Black Canary, the Metal Men, Poison Ivy, Enemy Ace, the Suicide Squad, and Rex the Wonder Dog.