
Dennis Joseph O'Neil (May 3, 1939 – June 11, 2020) was an American comic book writer and editor, principally 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. It was during this run that O'Neil co-created the Batman villains Ra's al Ghul and Talia al Ghul. His other notable work includes runs on The Shadow with Michael Kaluta and The Question with Denys Cowan. As an editor, he is principally known for editing the various Batman titles. He also sat on the board of directors of the charity The Hero Initiative and served on its Disbursement Committee. Description above from the Wikipedia article Dennis O'Neil, licensed under CC-BY-SA, full list of contributors on Wikipedia.

Comic Book Men
TV • 2012

Superpowered: The DC Story
TV • 2023

Superheroes: A Never-Ending Battle
TV • 2013

Joker: Put on a Happy Face
MOVIE • 2020

The Fire Rises: The Creation and Impact of The Dark Knight Trilogy
MOVIE • 2013

Comic Book Superheroes Unmasked
MOVIE • 2003

Secret Origin: The Story of DC Comics
MOVIE • 2010

Knight Immortal
MOVIE • 2019

Look, Up in the Sky! The Amazing Story of Superman
MOVIE • 2006

Batman Unmasked: The Psychology of The Dark Knight
MOVIE • 2008

The Universe According to Green Lantern
MOVIE • 2011

Legends of the Dark Knight: The History of Batman
MOVIE • 2005

Masterpiece: Frank Miller's The Dark Knight Returns
MOVIE • 2013

The Science of Superman
MOVIE • 2006

Comic Books & Superheroes
MOVIE • 2001

Robin: The Story of Dick Grayson
MOVIE • 2010

Heart of Vengeance: Returning Batman to His Roots
MOVIE • 2011

The Legends Behind the Comic Books
MOVIE • 2007