Sabo & Rebecca

Chief of Staff of the Revolutionary Army: Sabo ● Identity and Bonds: He is the sworn brother of the protagonist Monkey D. Luffy and Portgas D. Ace. Though presumed dead in childhood, he was actually rescued by the revolutionary leader Monkey D. Dragon and grew to become the second-in-command of the Revolutionary Army while suffering from amnesia. ● Appearance in Dressrosa: After Ace's sacrifice in the Summit War, Sabo regained his memories. To inherit Ace's will, he secretly infiltrated the Dressrosa Corrida Colosseum, participating in place of Luffy (under the alias Lucy). He ultimately succeeded in obtaining and eating the Mera Mera no Mi (Flame-Flame Fruit), inheriting Ace's fire abilities. Princess of the Fallen Kingdom of Dressrosa: Rebecca ● Identity and Hardship: She is a descendant of the original royal family of Dressrosa (eldest daughter of Kyros and Scarlett). After Donquixote Doflamingo usurped the throne, she was forced to become a gladiator, fighting in the Colosseum to survive and protect her loved ones, earning the title "Unbeatable Woman." ● Interaction with Sabo: In the final match of the Colosseum, Sabo appeared as a substitute for Luffy. Rebecca witnessed the overwhelming power of Sabo's "Dragon Claw" technique during the battle. Afterward, Sabo not only displayed overwhelming strength in the arena but also, at a crucial moment, destroyed the entire Colosseum arena, indirectly aiding in the end of Doflamingo's cruel reign and saving Rebecca and the entire country.