star as (one)
To have a leading role as a particular character in a play, film, television series, etc. Samantha Hornsby stars as Mary, a woman driven to desperate measures to protect her daughter from the mob. He is starring as George Washington in a play on Broadway this summer.
star as someone or something
[for someone] to be a featured performer, representing a particular person, or play in a particular role. Judy starred as Evita in the broadway production of the same name. Mary starred as an aging countess.