The structure of the families was constantly in flux due to the actions of one of the mafia's bosses, Capone Bege, who frequently took down his rival bosses in order to watch the struggle for power that would ensue. The other mafias tried to attack Bege in revenge, but all of their attack parties were dispatched due to Bege's Devil Fruit power. However, Bege's presence in the West Blue ceased after he grew tired of his dominance and set sail on the Grand Line as a pirate.
- They are based off the real-life Five Families, which were the five major crime families controlling New York.
- ↑ One Piece Manga and Anime — Vol. 51 Chapter 498 and Episode 392, Capone Bege debuts.
- ↑ One Piece Manga and Anime — Vol. 81 Chapter 812 and Episode 763, Bege's bounty is revealed.
- ↑ 3.0 3.1 One Piece Manga — Vol. 85 Chapter 857, The Five Great Families are first mentioned.