Peter is a servant to the Capulet household, and he is tasked with delivering messages and running errands for them. He is present at the ball where Romeo and Juliet first meet, where he tells Romeo that Juliet is a Capulet. The character is also present when Romeo and Juliet meet in Juliet’s balcony, and it is Peter who tells Lady Capulet that Romeo has been seen in the vicinity. He is present at the fight between Romeo and Tybalt, but does not engage himself or take part in it directly. Instead, he simply reports back to his master when it’s over. Peter also attends Juliet’s funeral, and once again reports back to his master that Romeo is there as well. It is Peter who then tells Romeo that Juliet has died—a fact which Peter knows because he was there when she did so.