
Dennis "Denny" O'Neil was a comic book writer and editor best known for his work for Marvel Comics and DC Comics from the 1960s through the 1990s, and Group Editor for the Batman family of titles until his retirement. His best-known works include Green Lantern/Green Arrow and Batman with Neal Adams, The Shadow with Michael Kaluta and The Question with Denys Cowan. As an editor, he is principally known for editing the various Batman titles. From 2013 unti his death, he sat on the board of directors of the charity The Hero Initiative and served on its Disbursement Committee.
Series
Books

Iron Man Epic Collection, Vol. 10
The Enemy Within
2013

Batman
Detective Comics #1000 Deluxe Edition
2019

Batman
Arkham: Two-Face (Batman
2015

The Bite of Monsters
1970

Batman
Knightfall, Part Three: Knightsend
1994

Green Lantern/Green Arrow
2001

Batman
Birth of the Demon
1992

Superman
Kryptonite Nevermore!
1971

Fritz Leiber's Fafhrd and the Gray Mouser
Cloud of Hate and Other Stories
2016

The Dark Knight
2008

Two-Face
A Celebration of 75 Years
2017

Diana Prince, Wonder Woman, Vol. 1
2008

Batman
Bruce Wayne, Fugitive
2002

The Green Lantern/Green Arrow Collection, Vol. 1
1971

Batman
Road to No Man's Land, Vol. 2
2016

Batman
Knightfall, Part One: Broken Bat
1993

Batman
Last Rites
2008

The Greatest Batman Stories Ever Told, Vol. 1
1988

Black Lightning, Vol. 1
2016

Green Lantern
The Greatest Stories Ever Told
2006

Batman
Shaman
1989

Batman
Knightfall
1994

The Joker
His Greatest Jokes
2019

Marvel Masterworks
The Amazing Spider-Man, Vol. 21
2019

Green Arrow
A Celebration of 75 Years
2016

Batman
Venom
1991

DC Comics Presents
Batman - Arkham
2011

Marvel Masterworks
Nick Fury, Agent of S.H.I.E.L.D., Vol. 1
2007

Showcase Presents
Bat Lash, Vol. 1
2009

Green Arrow
80 Years of the Emerald Archer
1993

I classici del fumetto di Repubblica n. 24
Batman
2003

The Shadow
Hitler's Astrologer
1988

Marvel Masterworks
The Amazing Spider-Man, Vol. 20
2018