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Sean Noonan was a veteran of the Korean War. He became a hitman after the war, but eventually left the profession to open up his own bar in the Cauldron section of Gotham City. Sean was a father figure to both Pat Noonan and Tommy Monaghan and often settled disputes between the hitmen who hung out at this bar. Sean was killed when he was stabbed by Benito Gallo.
- 43 Appearances of Sean Noonan (New Earth)
- 11 Images featuring Sean Noonan (New Earth)
- 4 Quotations by or about Sean Noonan (New Earth)
- Character Gallery: Sean Noonan (New Earth)