Daniel James Abraham, pen names M. L. N. Hanover and James S. A. Corey, is an American novelist, comic book writer, screenwriter, and television producer. He is best known as the author of The Long Price Quartet and The Dagger and the Coin fantasy series, and with Ty Franck, as the co-author of The Expanse science fiction series, written under the joint pseudonym James S. A. Corey. The series has been adapted into the television series The Expanse (2015–2022), with both Abraham and Franck serving as writers and producers on the show. He also contributed to Wildcards anthology series shared universe.

Ty Corey Franck is an American novelist, screenwriter, and television producer. He is best known for co-authoring The Expanse with Daniel Abraham under the pseudonym James S. A. Corey, as well as Game of Thrones: A Telltale Games Series (2014) and The Expanse: Expanded (2016). The Expanse novels have been adapted into the television series The Expanse (2015–2022), with both Franck and Abraham serving as writers and producers on the show.