Ace, Luffy and Sabo are three young boys who are close, sharing a deep brotherly bond that has grown stronger with time. After Luffy met Shanks, Garp took him to the mountain bandit leader Curly Dadan, whom he also tasked to take care of Ace. That's where Luffy first met Sabo and Ace; that's how they became the ASL brothers. Their individual personalities contrast with one another, but they share a love for adventure, a thirst for freedom and a determination.