Greenberger was born to a Jewish family in Brooklyn, New York, the son of Edwin L. and Joan Greenberger. He attended Binghamton University, where he wrote and edited for the college newspaper, Pipe Dream, and also interned at the Binghamton Sun-Bulletin.
Career
Following his graduation, he worked as an editor for Comics Scene and Starlog Press until 1984, when he joined DC Comics as an assistant editor. Greenberger was hired to assist Len Wein and Marv Wolfman by the then DC Vice President/Executive Editor Dick Giordano. The company was then organizing its output with the major comic book crossover Crisis on Infinite Earths and the guidebook Who's Who: The Definitive Directory of the DC Universe. Based on his work during this period, Greenberger was promoted to editor the following year, being assigned the titles Star Trek, Suicide Squad, and Doom Patrol. Under his editorship, the DC Comics adaptations of several Star Trek films were released, and his editorial work on the Star Trek comics led to numerous contributions to the franchise's novel series. In 2001, he and novel editor John J. Ordover developed the seven-book crossover miniseries Gateways. Greenberger wrote the third novel of the series, as well as the concluding novella. He worked at DC until 2000, having risen to the position of Manager-Editorial Operations. During this time, he worked on such titles as The Warlord, Lois Lane, Action Comics Weekly, Time Masters, Secret Origins, The Hacker Files and others. Greenberger became involved in local politics in his home of Fairfield, Connecticut beginning in 1999, initially as member of the Parking Authority from 1999 to June 2006, when he resigned to join the Cable Advisory Council for Area 2 in Connecticut. In November 2005, he was elected a Representative to Fairfield's Representative Town Meeting, and following his reelection in November 2007 was made its Moderator. After losing the 2009 election, he was appointed to represent Fairfield on the Greater Bridgeport Regional Planning Agency through June 2011. He also served as Vice-Chair of Fairfield's Democratic Town Committee and retired from the post in 2013 when he relocated from Fairfield, Connecticut to Maryland. Greenberger left DC in 2000 and joined the online company Gist Communications. This break with the comics industry lasted until 2001, when he joined Marvel Comics as Director-Publishing Operations. Greenberger was hired to work under Joe Quesada, but was let go during a tumultuous reorganization overseen by Bill Jemas. He soon rejoined DC Comics as a Senior Editor for Collected Editions, but was terminated from his position in 2006 after a reorganization at DC and a publishing error which saw copies of the Golden Age Hawkman Archives printed with pages in an incorrect order. His firing was criticized by comic book writers Peter David and Christopher Priest. Greenberger found work as a freelance writer and editor, working for such companies as Weekly World News, Platinum Studios, Syfy, Famous Monsters of Filmland, and ComicMix.com, as well as both DC and Marvel. rom June 2006 to August 2007, he also served as Managing Editor at Weekly World News.
Personal life
Greenberger married Deborah Upton in 1980. They are the parents to Kathleen Michelle and Robert Edward Jr..
