Leigh Whannell is an Australian screenwriter, director, and actor, best known for his work in the horror genre. He gained fame as the co-creator of the Saw franchise, which began with the first film released in 2004. Whannell wrote the screenplay for the original movie and has since contributed to several sequels, establishing a significant presence in the film industry. In addition to his work on Saw, Whannell directed the critically acclaimed film The Invisible Man in 2020, showcasing his talent behind the camera. He has also appeared in various films and television shows, further solidifying his reputation as a versatile figure in entertainment.