He dies.
Actually, Mercutio is killed in Act III Scene 1 when he duels Tybalt. Romeo tries to stop the fight, by throwing himself between the two, but Tybalt manages to stab Mercutio under Romeo's arm.
Mercutio dies.
MERCUTIO
Mercutio steps in and fights Tybalt instead.
Act 3 scene 1
Benvolio (in Act 1), Mercutio and Romeo (in Act 3).
Act 3 / Scene 1
In Act 3, Romeo attempts to stop the fight between Tybalt and Mercutio. When his interference fails and Mercutio is killed, he seeks revenge and ultimately kills Tybalt in a fit of passion.
In Act 3 Scene 1 Benvolio is nervous, Mercutio is careless.
Actually, Mercutio is killed in Act III Scene 1 when he duels Tybalt. Romeo tries to stop the fight, by throwing himself between the two, but Tybalt manages to stab Mercutio under Romeo's arm.
Mercutio dies.
MERCUTIO
Mercutio steps in and fights Tybalt instead.
Act 3 scene 1
The mood in Act 3 of "Romeo and Juliet" shifts from lightheartedness to tension and tragedy. It begins with a humorous exchange between Mercutio and Benvolio but escalates quickly with the deaths of Mercutio and Tybalt, leading to a sense of doom and despair as the consequences of the characters' actions become clear.
Mercutio meets up with Romeo and has a great time making fun of the Nurse.
The climax of Romeo and Juliet Act 3 is the fatal duel between Tybalt and Mercutio, leading to Mercutio's death and Romeo seeking revenge by killing Tybalt. This event sets off a chain of tragic events that ultimately leads to the downfall of the young lovers, Romeo and Juliet.