Greg is an editor, writer and story consultant focused on creating comic books.
He began his career at DC COMICS in 2008, eventually joining the editorial staff of the VERTIGO imprint. There he worked on a number of titles including FABLES (and the spin-off series FAIREST), THE UNWRITTEN, FBP: FEDERAL BUREAU OF PHYSICS, SWEET TOOTH, THE KITCHEN, AMERICAN VAMPIRE, 100 BULLETS: BROTHER LONO and many others.
As a writer, Greg formed Poison Press with Monica Gallagher and Tim Fish. They are a comics collective that self-publishes mini-comics. In September 2018, they will debut a new 12-page historical gay romance by Greg and Tim.
Greg has also collaborated with Tim Fish, Michael DiMotta and Sal Cipriano on a short story for the WHERE WE LIVE anthology by Image Comics benefiting the victims of the Las Vegas shooting and their families.