A theatre cast is a group of actors who perform in a play, musical, or other live performance. Each member of the cast is assigned a specific role, which can range from leading characters to supporting roles. The cast works together to bring the script to life, often rehearsing for weeks or months before the performance. In addition to actors, a theatre cast may also include understudies, who are trained to step in if a primary actor is unable to perform. The success of a production often relies on the chemistry and collaboration among the cast members, as they interpret the vision of the director and engage the audience.