What do actors do? An actor is a person who portrays a character in a production presented via any of several types of mediums: film, radio, television or live theater. Many actors aspire to become a high-profile, high-paid Hollywood actor, while others are perfectly content remaining at the local level or acting in advertisements or as extras in larger productions. In either case, an actor is tasked with the specialized duty to portray their character convincingly, engaging the audience and bringing their character to life.