(written from a Production point of view)
J.M. DeMatteis (born 15 December 1953; age 60) is a comic book writer. He started with DC Comics in the mid-1970s after an earlier career as a music journalist. He is known for his work on Marvel Comics' Defenders and Captain America, and creating DC Comic's Justice League International (with Keith Giffen and Kevin Maguire). He was the author of the last issue in Marvel's Star Trek series, "A Thousand Deaths".