DRAMATIS PERSONAE
VINCENTIO, the Duke
ANGELO, Deputy
ESCALUS, an ancient Lord
CLAUDIO, a young gentleman
LUCIO, a foppish young nobleman
Two gentlemen, friends to Lucio
PROVOST
THOMAS, a friar
Lucio is a kind of  flaneur  – or a man about town. His wordplay and insouciance lend the play a great deal of levity – although he is punished quite severely by the Duke in the final scene.
Measure for Measure Characters of the Play