He's the Duke of Illyria
Orsino
A lady of Illyria, in mourning for her brother
Olivia
A young man from another country who works for Duke Orsino
Cesario
The "fool" (royal jester) in Duke Orsino's palace
Feste
A young woman, shipwrecked on Illyria
A young man, lost in a shipwreck
Sebastian
The butler of lady Olivia
Malvolio