Scott Peterson joined the staff of DC Comics as the assistant of Dennis O'Neil in 1991. He worked as an editor of Batman-related titles from 1991-1998 and spent eight years as a freelance writer of comic books and children's books before returning to the editor's desk at WildStorm in July, 2006.

During his years at DC Comics, Peterson edited such titles as Detective Comics, Green Arrow, Batman Black and White, Nightwing, and The Batman Adventures, including the Eisner and Harvey Award-winning Mad Love by Paul Dini and Bruce Timm. Along with Dennis O'Neil, Jordan Gorfinkel, and Darren Vincenzo, Peterson was part of the Batman editorial team that developed the "No Man's Land" storyline conceived by Jordan B. Gorfinkel in 1998.

Between 1999 and 2003 he wrote 42 issues of Batman: Gotham Adventures, a monthly comic book aimed at young readers, pencilled by Canadian artist Tim Levins. In 2000, Peterson was the co-writer, along with Kelley Puckett, of DC's first ongoing Batgirl comic book series.