Mercutio is a character from William Shakespeare's play, Romeo and Juliet. He is a close friend of Romeo and is known for his witty and playful personality. Mercutio often uses humor and wordplay, making him one of the most memorable characters in the play. His famous speech about Queen Mab highlights his imaginative and cynical view of love. Mercutio plays a crucial role in the story, as his actions and fate significantly impact the plot. His death at the hands of Tybalt leads to a series of tragic events, ultimately contributing to the downfall of both Romeo and Juliet.