Christian
Christian is a young, idealistic writer who moves to Paris and falls in love with Satine. He is portrayed as passionate, naive, and devoted to his art and love.
Satine
Satine is the star courtesan and actress at the Moulin Rouge. She is charming, ambitious, and torn between her love for Christian and her obligations to the Duke and the club.
The Duke and Harold Zidler
The Duke is a wealthy, jealous patron who demands Satine's attention and threatens the cabaret. Harold Zidler is the pragmatic owner of the Moulin Rouge, who manages the club's finances and pressures Satine to secure the Duke's patronage.
For background on the film's production and cast, see Moulin Rouge! on Wikipedia.
