Cast & creator
Dennis O'Neil
Best known for Young Justice, DC's Legends of Tomorrow, Batman: The Animated Series
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.
Also known as: Jim Dennis, Dennis Joseph O'Neil, Denny O'Neil
35
film credits
11
television credits
20
1992–2026 · acting roles
7.3
average across scored titles
Signature credits
Known for
Across film & television
Filmography (46)
Showing 46 of 46 credits
Young Justice
Characters
2010
DC's Legends of Tomorrow
Thanks
2016
Batman: The Animated Series
Writer
1992Batman: The Animated Series
Story
1992
What If...?
Thanks
2021
Titans
Thanks
2018
Batman: Knightfall Part 1: Knightfall
Comic Book
2026Batman: Knightfall Part 1: Knightfall
Characters
2026
The Batman
Thanks
2022
Batman: Caped Crusader
Characters
2024
Madame Web
Characters
2024
Comic Book Men
Self
2012
Superpowered: The DC Story
Self
2023
Justice League Dark: Apokolips War
Characters
2020
Suicide Squad: Hell to Pay
Characters
2018
Batman: Bad Blood
Characters
2016
Justice League: Crisis on Infinite Earths Part Three
Characters
2024
Justice League: Crisis on Infinite Earths Part Two
Characters
2024
Green Lantern: Beware My Power
Characters
2022
Batman Ninja vs. Yakuza League
Characters
2025
Batman: Soul of the Dragon
Characters
2021Batman: Soul of the Dragon
In Memory Of
2021
Batman vs Teenage Mutant Ninja Turtles
Characters
2019
Batman: Knightfall Part 2: Knightquest
Comic Book
2026Batman: Knightfall Part 2: Knightquest
Characters
2026
Superheroes: A Never-Ending Battle
Self
2013
Deathstroke: Knights & Dragons
Characters
2020
Look, Up in the Sky! The Amazing Story of Superman
Self
2006
Batman: Knightfall Part 3: KnightsEnd
Comic Book
Batman: Knightfall Part 3: KnightsEnd
Characters
Knight Immortal
Self
2019
The Fire Rises: The Creation and Impact of The Dark Knight Trilogy
Self
2013
Secret Origin: The Story of DC Comics
Self
2010
Joker: Put on a Happy Face
Self
2020
Masterpiece: Frank Miller's The Dark Knight Returns
Himself
2013
Comic Book Superheroes Unmasked
Self
2003
Batman Unmasked: The Psychology of The Dark Knight
Self
2008
The Legends Behind the Comic Books
Self
2007
The Science of Superman
Self
2006
Robin: The Story of Dick Grayson
Self
2010
Legends of the Dark Knight: The History of Batman
Self
2005
Superman vs. Batman: When Heroes Collide
Self
2013
Comic Books & Superheroes
Self
2001Heart of Vengeance: Returning Batman to His Roots
2011
Batman Year One: A Conversation with DC Comics
2011Robin's Requiem
himself
2010