A performer, also known as an actor or actress, is a person who plays a role in theatre, film, television or other performances. The duties and responsibilities of a performer include

1. Character portrayal: Performers bring characters to life by interpreting and portraying their traits, emotions and motivations.
2. Script study: They read and analyse scripts or plays to understand their role and prepare for their performance.
3. Rehearsals: Performers attend rehearsals to learn their lines, practice interactions with other actors and refine their staging.
4. Emotional portrayal: They must be able to show different emotions in a believable way in order to touch the audience and tell the story convincingly.
5. Physical expression: Performers use body language, gestures and facial expressions to embody the characters and express their feelings.
6. Collaboration with the director: They work closely with directors and other creative team members to realise the vision for the production.
7. Performance skills: In live performances, performers must be able to perform in front of an audience, present their performance on stage and deal with audience reaction.
8. Flexibility: Performers often need to react quickly to changes in script or staging and be able to play different roles and genres.
9. Visibility and marketing: Many performers use social media and other platforms to promote their career, reach their audience and establish themselves as a brand.
10. Training: They often attend acting classes, workshops and training sessions to improve their skills and learn new techniques.

Overall, performers play a central role in the entertainment industry by telling stories, conveying emotions and captivating audiences. They help to illuminate different perspectives and human experiences and enrich culture and art.