What was tybalts role in Romeo and Juliet?

Tybalt is Juliet's cousin. He is a hot-headed, impulsive, and violent young man who represents the traditional chivalric values of the time. Tybalt is quick to anger and often resorts to violence to defend his honor and the honor of his family. Tybalt initially forbids Juliet from marrying Romeo, leading to a famous fight scene between Tybalt and Romeo in the streets of Verona. This ultimately results in Tybalt accidentally killing Romeo's close friend Mercutio. Romeo seeks vengeance for Mercutio's death and kills Tybalt in a fair fight. Tybalt's death precipitates a series of tragic events that leads to the deaths of Romeo and Juliet.