Greg Sestero

Greg Sestero is an American actor, filmmaker, model and author, best known for his role as Mark in the 2003 cult film The Room, as well as for his well-received memoir The Disaster Artist, detailing his experiences making The Room, which itself was later adapted into a 2017 film. He also appeared in a minor role as James in the 2020 Netflix miniseries The Haunting of Bly Manor.