
He was a legend. An iconic writer. The voice of Batman, Green Lantern, Green Arrow and so many more. Sad news to report from the comic book world, as it’s been confirmed that comic book writer Dennis J. “Denny” O’Neil passed away Thursday at home from natural causes. He was 81.
O’Neil’s alma mater Saint Louis University, shared the news on social media.
Dennis O’Neil, legendary comic book writer who wrote and edited for almost every major Marvel and DC superhero, passed away on Thursday. Hear from this truly storied Saint Louis University alum in the Fall 2011 issue of SLU's alumni magazine: https://t.co/cvxV4iUtRs pic.twitter.com/Js5PdkFu7p
— Saint Louis University (@SLU_Official) June 12, 2020
Born in 1939, O’Neil was a native of St. Louis, Missouri. He graduated from Saint Louis University in 1961 with a degree in English. He began his journalism career in Cape Girardeau, and later served in the U.S. Navy.
After serving, O’Neil joined Marvel Comics. In the 1960s, he signed with DC Comics and spent the next 12 years there.
Best known for writing the main Batman title, O’Neil also worked on Detective Comics and Batman: Legends of the Dark Knight. He edited DC Comics’ line of Batman comics for fourteen years from 1986 to 2000, and he’s among the people (alongside editor Julius Schwartz and Neal Adams) who are credited with bringing Batman back to his darker roots after those campy 1960s stories.
As well as creating the likes of Ra’s al Ghul, Talia al Ghul, and Azrael, O’Neil also breathed new life into villains including The Joker and Two-Face. He also paired up Green Arrow and Green Lantern in that critically acclaimed run, and penned that now iconic Superman vs. Muhammad Ali one-shot.

At Marvel, O’Neil helped create Lady Deathstrike, Obadiah Stane, Hydro-Man, and Madame Web. He also worked on Transformers and helped name some autobot named Optimus Prime.
His work was also seen on television through Batman: The Animated Series and Logan’s Run.
DC Comics also posted a tribute on its official Twitter account, saying O’Neil’s “voice will be missed.”
“DC mourns the passing of Dennis “Denny” O’Neil, who co-created some of DC’s—and the industry’s—most important comics. Between revitalizing Batman and telling thoughtful stories that addressed addiction and racism, he told the stories we needed to hear. His voice will be missed,” the tweet said.
DC mourns the passing of Dennis “Denny” O’Neil, who co-created some of DC’s—and the industry’s—most important comics. Between revitalizing Batman and telling thoughtful stories that addressed addiction and racism, he told the stories we needed to hear. His voice will be missed. pic.twitter.com/1nIONELeNx
— DC (@DCComics) June 12, 2020
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Comic Icons celebrate O’Neil on Twitter
From iconic Jim Lee to the voice of animated Batman, Kevin Conroy. O’Neil’s contributions to the super powered world were remembered on social media.
RIP Denny O’ Neil—one of visionary architects of DC Comics who helped revive Batman in the 1970’s and remains my favorite Green Lantern writer to date. Through his editing and writing, Denny was one of the earliest writers whose work and focus on social issues pushed comics 1/ pic.twitter.com/5zqmD4Wz7T
— Jim Lee (@JimLee) June 12, 2020
Denny O’Neil made timeless comics by making comics about his time. The revolutions of the 60s, the excesses of the 70s, the corruption of the 80s, the facades of the 90s—he used super hero tropes as brushstrokes to paint a picture of who we are and who we could be. RIP. pic.twitter.com/eWwI6tfnrp
— Tom King (@TomKingTK) June 12, 2020
an absolute king – his Green Lantern & Green Arrow w/ Neal Adams is one of my foundational influences https://t.co/8lq5p5eK0U
— Saladin Ahmed (@saladinahmed) June 12, 2020
Denny O'Neil was an ALL TIME great comics writer. Here's @EvNarc on his run of The Question, probably my favorite book of his. (Which is saying something when he did such great work with Green Arrow, Green Lantern, and Batman).
— austin walker (@austin_walker) June 12, 2020
Going inside now.
https://t.co/NW47xv9ZRP pic.twitter.com/as845E6So5
Crushed to hear about Denny O'Neil. I met him for the 1st time in 2012 filming this extras reel for Batman Year One & I couldn't stop geeking out. He was so kind and encouraging tho, &I feel lucky to have gotten to know him over the years. True giant. Lights dim in Gotham tonight https://t.co/OUFleKcNbL
— Scott Snyder (@Ssnyder1835) June 12, 2020
RIP Denny O'Neil.
— Mike Mignola (@artofmmignola) June 12, 2020
He gave me my first regular inking gig (Master of Kung Fu) way before I had any idea what I was doing. Sorry to see him go.
Denny O’Neil gave us the greatest moment in comics pic.twitter.com/TucqqhDqRZ
— John Suarez (@littlemac1183) June 12, 2020
RIP Denny O’Neil. You gave the Batman universe so much. Thank you for your amazing talent. https://t.co/7uW1Cqqne5
— Kevin Conroy (@RealKevinConroy) June 13, 2020
Rest in super powers, Dennis.

The Geek is a working screenwriter, director and screenwriting instructor.