They are called "The Star"
The lead male role in a production would be called the Principal role. The dancer does not have to be of a "principal" rank in the company to do this role. It depends on the casting of the director or choreographer of the show.
A person who acts as a reserve to a leading actor is called an understudy. They are typically prepared to step in and play the role if the leading actor is unable to perform.
A: interpreters
Main role, main character. The leading lady can be referred to as the prima donna.
The cast of Su tasi - 1993 includes: Asli Janet as Leading Role Fehmi Tengiz
The musical is called Annie, its about an orphan who finds love and happiness when she is adopted by a billionaire.
Art Carney won the Oscar for Best Actor in a Leading Role in 1974.
Emma Thompson won the Oscar for Best Actress in a Leading Role in 1992.
Audrey Hepburn won the Oscar for Best Actress in a Leading Role in 1953.
Al Pacino won the Oscar for Best Actor in a Leading Role in 1992.
Sweet Home Alabama was a movie that starred Reese Witherspoon as the leading role.
Nominated Oscar Best Actor in a Leading Role for: Wag the Dog (1997)Won Oscar Best Actor in a Leading Role for: Rain Man (1988)Nominated Oscar Best Actor in a Leading Role for: Tootsie (1982)Won Oscar Best Actor in a Leading Role for: Kramer vs. Kramer (1979)Nominated Oscar Best Actor in a Leading Role for: Lenny (1974)Nominated Oscar Best Actor in a Leading Role for: Midnight Cowboy (1969)Nominated Oscar Best Actor in a Leading Role for: The Graduate (1967)