tybalt represents the hostility between the 2 houses
tybalts first words are to benvolio who is trying to stop a fight between the families servants
tybalt is introduced as a villian who hates peace however in act 3 scene 1 he is presented as polite - "gentlemen, goode'en" and he initiallyavoids fighting mercutio - "whatwouldstthouhavewithme"
mercutio clearly dislikestybalt
in act 2 scene 4 mercutio mocks tybalts skill as a swordsman "hefightsasyousingpricksongs"
the nurse and juliet speak fondly of tybalt - " dearest cousin"