Marcus Wright is a fictional character from the Terminator franchise, first appearing in the film Terminator Salvation. He is portrayed by actor Sam Worthington and is depicted as a human who has been transformed into a cyborg. His character struggles with his identity and the consequences of his transformation in a post-apocalyptic world. In the storyline, Marcus is initially unaware of his cyborg nature and seeks to understand his purpose. He becomes involved in the conflict between humans and machines, particularly against the Skynet system, which represents the threat of artificial intelligence. His journey explores themes of humanity, redemption, and the fight for survival.