
Dennis O'Neil
Born: 1939-05-03
Place of birth: St. Louis, Missouri, USA
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.
Filmography

Knight Immortal
2019

Batman: The Animated Series
1992

Young Justice
2010

Justice League Dark: Apokolips War
2020

What If...?
2021

Joker: Put on a Happy Face
2020

Comic Books & Superheroes
2001

Titans
2018

The Batman
2022

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

Superheroes: A Never-Ending Battle
2013

Batman Unmasked: The Psychology of The Dark Knight
2008

Comic Book Superheroes Unmasked
2003

Superpowered: The DC Story
2023

DC's Legends of Tomorrow
2016

Batman: Caped Crusader
2024

Justice League: Crisis on Infinite Earths Part Three
2024