Harry Potter and the Goblet of Fire
Bill Weasley is Ron's oldest brother. He's cool, with long hair and an earring "with a horrible great fang on it" (5.90), to use Mrs. Weasley's terms. He's a curse-breaker for Gringotts' bank, which makes him extra cool. He also happens to be on hand to watch the third task of the Triwizard Tournament, though he doesn't play a real role in any of the events of the end of Goblet of Fire. However, we do notice that there seem to be sparks of attraction between Fleur Delacour and Bill – where could that be going...?