A former English composition and writing teacher, Greg has been a story-teller all his life, working as an Associate Editor and Freelance Writer for DC Comics, where he wrote Captain Atom and other titles.

Greg worked at Walt Disney Television Animation from 1989 until 1996, rising through the ranks to become the Director of Series Development for the division. Greg worked on such diverse properties as Darkwing Duck, Gummi Bears, Tail Spin, Bonkers, Raw Toonage, Duck Tales the Movie, Aladdin the Series and The Mighty Ducks, among others.

In 1991, Greg and his team created and developed a new series for Disney: GARGOYLES. Greg left his position as an executive to become the Supervising Producer and Supervising Story Editor of the first 66 episodes of that series. In 1996, Greg left Disney for DreamWorks Television Animation, where he also developed numerous series.

In October of 1998, Greg left DreamWorks to become a full-time Freelance Writer, Story Editor, Producer and Voice Director. He has written scripts for Men In Black, Disney's Hercules, Big Guy & Rusty the Boy Robot, Max Steel, Roughnecks: The Starship Troopers Chronicles, Buzz Lightyear of Star Command, The Mummy, Kim Possible, The Batman, Alien Racers and Bionicle: Mask of Light, among others.

Greg voice directed the original DVD Movie, Atlantis: Milo's Return and the English dub of the Japanese anime video series 3X3 Eyes. He also produced and story edited the second season of W.I.T.C.H. for Disney and SIP Animation.

In 2006, Greg oversaw the return of Gargoyles when he began writing the Disney's Gargoyles comic book series published by Slave Labor Graphics. The first issue of the bi-monthly book sold out its initial print run. A Gargoyles spin-off entitled Bad Guys is a six-issue limited series debuted in Winter 2007. Again written by Greg Weisman, Bad Guys features the adventures of Gargoyles villains Hunter, Dingo, Matrix, Yama and Fang on a mission for good, somewhat in the mold of the Dirty Dozen. He is also developing a new "Red Tornado" series for DC Comics.

CONvergence 2008 Guest of Honor Greg Weisman recently announced the culmination of over a year's-worth of work on a new animated series for the KidsWB, "THE SPECTACULAR SPIDER-MAN," where Greg acts and Supervising Producer/Writer. This new Spidey series aired a one hour premier on March 8th. To see trailers and find out when you can catch the web-slinger in action on the series' website.

Greg has a wife, Beth, and two kids, Erin and Benny, two cats, Iggy and Bigtime and two basset hounds, Abraham and Sami.