Primary

• Hacchan Friend of Monkey D. Luffy

Extended

• Monkey D. Luffy Brother of Portgas D. Ace
• Monkey D. Luffy Brother of Sabo (young)
• Monkey D. Luffy Son of Monkey D. Dragon
• Monkey D. Luffy Grandson of Monkey D. Garp
• Monkey D. Luffy Foster son of Curly Dadan
• Monkey D. Luffy Enemy of Helmeppo
• Monkey D. Luffy Captain of Roronoa Zoro
• Monkey D. Luffy Captain of Nami
• Monkey D. Luffy Captain of Usopp
• Monkey D. Luffy Captain of Sanji
• Monkey D. Luffy Captain of Tony Tony Chopper
• Monkey D. Luffy Captain of Nico Robin
• Monkey D. Luffy Captain of Franky
• Monkey D. Luffy Captain of Brook
• Monkey D. Luffy Captain of Jinbe
• Monkey D. Luffy Captain of Nefeltari Vivi
• Monkey D. Luffy Ally of Cavendish
• Monkey D. Luffy Ally of Bartolomeo
• Monkey D. Luffy Ally of Trafalgar Law
• Monkey D. Luffy Rival of Eustass Kid
• Monkey D. Luffy Ally of Capone Bege
• Monkey D. Luffy Enemy of Buggy the Star Clown
• Monkey D. Luffy Enemy of Crocodile
• Monkey D. Luffy Enemy of Gecko Moria
• Monkey D. Luffy Ally of Boa Hancock
• Monkey D. Luffy Enemy of Donquixote Doflamingo
• Monkey D. Luffy Enemy of Alvida
• Monkey D. Luffy Enemy of Galdino
• Monkey D. Luffy Enemy of Kuro
• Monkey D. Luffy Enemy of Don Krieg
• Monkey D. Luffy Enemy of Arlong
• Monkey D. Luffy Friend of Hacchan
• Monkey D. Luffy Student of Silvers Rayleigh
• Monkey D. Luffy Friend of Bellamy the Hyena
• Monkey D. Luffy Ally of Charlotte Lola
• Monkey D. Luffy Friend of Marguerite
• Monkey D. Luffy Enemy of Wet-Haired Caribou
• Monkey D. Luffy Temporary Ally of Crocodile
• Monkey D. Luffy Temporary Ally of Daz Bonez
• Monkey D. Luffy Temporary Ally of Eustass Kid
• Monkey D. Luffy Temporary Ally of Buggy the Star Clown
• Monkey D. Luffy Temporary Ally of Galdino
• Monkey D. Luffy Rival of Charlotte Katakuri
• Monkey D. Luffy Temporary Ally of Trafalgar Law
• Monkey D. Luffy Former Enemy of Helmeppo
• Monkey D. Luffy Former Enemy of Hacchan