Mummer
no he is an actor
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 single character play is called a monologue. It features a single actor speaking alone on stage.
No, but he did play a gay man in a movie called "Little Ashes".
yes! its called Animal Crossing city folk. its lots of fun!
There is Shrunk and Fillard.
Romeo is a character in the play Romeo and Juliet. He is not an actor and does not appear in an play within the context of the play. He is not like the First Player in Hamlet who is in fact an actor and does appear in a play called the Murder of Gonzago in the middle of the play Hamlet.
The actor who play him in the film is called 'Edi Gathegi'.
If it is a male, it is called an actor, and (if female) an actress.
This is called a prologue.
It is called a role, or a part. In films, the word part is used. The general term for the dialogue and stage actions for a play is script.
A Swiss alpine folk singer is called a yodeler.