Question: how are benvolio and tybalt foils?
Answer: In Romeo and Juliet, Romeo's cousin Benvolio (whose name even means good will or benevolence) and Tybalt are foils. While Benvolio is just a nice guy who does everything in his power to stop a fight and keep the peace, Tybalt can't draw his sword quickly enough. The first time we meet Tybalt is in Act 1, Scene 1.