Marc Guggenheim is an American screenwriter, television producer, comic book writer, and novelist. He is best known as the creator of the television series Eli Stone, Arrow, and Legends of Tomorrow, as well as the writer of the feature films Green Lantern, and Percy Jackson: Sea of Monsters. A native of Long Island, New York, Guggenheim practiced law at one of Boston’s most prestigious firms before getting hired on the writing staff of David E. Kelley’s Emmy- winning show about Boston attorneys, “The Practice.” Guggenheim then joined “Law & Order,” where he wrote for three seasons before moving on to the critically acclaimed series “Jack & Bobby,” and later, the ratings juggernaut “CSI: Miami.” It was “Jack & Bobby” that introduced Guggenheim to Greg Berlanti, and the two resolved to create a show together, a pact which led to the development of “Eli Stone,” for which they received a Writers Guild Award nomination for Best Drama Teleplay. While producing the “Eli Stone” pilot, Berlanti pulled Guggenheim in to help him produce the first season of “Brothers & Sisters.” Guggenheim has continued to collaborate with Berlanti on the feature film versions of the DC Comics characters Green Lantern and The Flash. “Green Lantern” was released as a major motion picture starring Ryan Reynolds in June 2011. This collaboration led to Guggenheim and Berlanti co-creating “Arrow,” now in its seventh season. Guggenheim served as Executive Producer/Showrunner for “Arrow’s” first six seasons as well as for the first three seasons of its sister show, “DC’s Legends of Tomorrow.” Guggenheim also Executive Produced two animated series set in the Arrowverse, “Vixen” and “Freedom Fighters: The Ray.” Guggenheim’s work in animation also includes the multiple Daytime Emmy-nominated series “Trollhunters” in collaboration with acclaimed Oscar winner Guillermo del Toro. Guggenheim received a Daytime Emmy Award for Outstanding Writing in an Animated Program for his work on the series, which will spawn two spinoffs, “3Below” and “Wizards,” which Guggenheim is also Executive Producing along with del Toro. While maintaining a successful career in television, Guggenheim has pursued a parallel career as a screenwriter, with such diverse projects as the film adaptation of “Percy Jackson: Sea of Monsters” (2013), a feature film version of “Perry Mason” for Robert Downey Jr., and an adaptation of Robert A. Heinlein’s sci-fi classic “The Moon is a Harsh Mistress” for director Bryan Singer. 2014 marked Guggenheim’s entry into the world of prose, publishing his first novel “Overwatch” (Mulholland Books/Little, Brown), which Publisher’s Weekly called “a high energy debut... [which] will appeal to readers who appreciate an underdog.” A life-long comic book fan, Guggenheim has been writing comics professionally for over ten years, working on titles for both Marvel Comics (“Blade,” “X-Men,” “Amazing Spider- Man,” “Agents of S.H.I.E.L.D.”), DC Comics (“The Flash,” “Justice Society of America,” “Batman Confidential”), and original creator-owned works (“Resurrection,” “Halcyon,” “Nowhere Man,” “The Infinite Adventures of Jonas Quantum,” “Stringers”). Guggenheim is continually exploring other mediums. He’s written the scripts for numerous videogames, including “Call of Duty 3,” “X-Men Origins: Wolverine” and “Singularity.” (Wolverine and Singularity were nominated for consecutive WGA Awards.) In 2008, he adapted a Stephen King short story “N.” into a Marvel Comics graphic novel and a 25-part mobisode series that was available online and through iTunes. Guggenheim currently lives in Los Angeles with his wife Tara, a fellow TV writer and WGA nominee, who is co-creator of The CW dramedy “Reaper,” their daughters Lily and Sara, and their pets Lucky, Finn, and Jarvis.