Marsh (マーシュ, Māshu) is a mercenary working with Flaim's mercenary corps. He first appears in Record of Lodoss War: The Fire Demon where he and his fellow mercenaries Fourth and Deni are assigned with Parn in the battle against the Fire tribe. After the war, he goes with Fourth to Raiden, where Fourth becomes the new guild master for the Raiden Thieves’ Guild.
During the events of Record of Lodoss War: The Demon Dragon of Fire Dragon Mountain 2, a party led by Orson, which includes Slayn and Leylia, meets with the Raiden Thieves’ Guild, as per Kashue’s wishes.