She is at the center of the various plots, both the comedic and the romantic. She has various suitors.
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He is often portrayed as the main antagonist.
Malvolio is defined as a kind of Puritan. He despises all manner of fun and games, and wishes his world to be completely free of human sin, yet he behaves very foolishly against his unstoic nature when he believes that Olivia loves him. This leads to major conflicts with characters such as Sir Toby Belch, Sir Andrew Aguecheek, and Maria, mistress of the household.