Duke Orsino
Duke Orsino is a moody man in love with Olivia, a rich countess. His obstacle to loving Viola is that he does not know she exists. This will be solved when she reveals herself. It is part of the play’s humor that he will never overcome the obstacles to loving Olivia.
1. Olivia is mourning her dead father and not interested in the Duke.
2. Olivia falls in love with Cesario (the name Viola adopts in her disguise as a man).