Spock is a fictional character from the Star Trek franchise, known for his half-Vulcan, half-Human heritage. He serves as the science officer and first officer aboard the starship USS Enterprise, embodying logic and reason, often contrasting with the emotional nature of his captain, James T. Kirk. Created by Gene Roddenberry, Spock is famous for his Vulcan salute and the phrase 'Live long and prosper.' His character explores themes of identity, belonging, and the balance between emotion and logic, making him one of the most iconic figures in science fiction history.