Answer
John Cleese performed in Twelfth Night, which is a comedy play by William Shakespeare. The play is set on the fictional island of Illyria and follows the romantic adventures of the noblewoman Viola, who disguises herself as a young man named Cesario in order to serve the Duke Orsino. Cleese played the role of Sir Toby Belch, a drunken, lecherous nobleman who is friends with the Duke.