Sabo

Sabo, known as the "Flame Emperor," holds the esteemed position of chief of staff within the Revolutionary Army, ranking as the organization's second in command and outranked solely by its supreme leader, Monkey D. Dragon. He shares a sworn brotherhood with the infamous pirates Monkey D. Luffy and the late Portgas D. Ace. Born into a noble family, Outlook III and Didit raised Sabo in the Goa Kingdom. However, at the young age of 10, Sabo fled his privileged life and embarked on a journey to become a pirate, hoping to chronicle his travels in a book. While living as a vagabond in Gray Terminal, he met Ace and Luffy. Shortly after, Sabo attempted to set sail on his own, but his ship was destroyed by the World Noble Saint Jalmack. Luckily, Dragon rescued him, but the ordeal resulted in Sabo losing his memory. As a result, he dedicated himself to the Revolutionary Army's cause. A decade later, Sabo regained his memories after learning of Ace's death. Two years following his recovery, Sabo reunited with Luffy and consumed Ace's Devil Fruit, the Mera Mera no Mi, continuing his late brother's legacy. Sabo's current bounty is 602,000,000.

As an adult, Sabo has honed his skills in the Ryusoken fighting style, centered around using "claws," which he refers to as grips. With them, he can easily break through armor, great swords, artillery, and even skulls, while remaining unscathed. He describes his fingers as being as sharp as dragon claws and uses Haki to further enhance their strength. Unlike Luffy, who typically goes for his opponent's body, Sabo often prioritizes destroying their weapon before engaging in direct combat. This difference in approach became apparent when he fought in Luffy's place in the coliseum and allowed Diamante to realize that "Lucy" was not actually Luffy. Sabo also consumed the Mera Mera no Mi, a powerful Logia-type Devil Fruit that grants him the ability to create, manipulate, and transform into fire at will. Initially struggling to control his newfound powers, he displayed the typical difficulties of a new Devil Fruit user. Even now, he admits that he has yet to fully adapt to his abilities, occasionally resorting to dodging attacks despite his Logia nature. Nevertheless, Sabo has swiftly developed his powers and undergone extensive training to master them. Sabo is able to to utilize signature technique of his late sworn brother, Ace, the "Hiken", allowing him to transform his arm into a large, powerful fire blast. It is strong enough to shatter the bottom floor of the Corrida Colosseum, which was strong enough to support the weight of a giant, exposing the underground facilities. Sabo can also use his flames to augment his Ryusoken style, as well as imbue flames into his weapons. Sabo has shown great mastery in the usage of Busoshoku Haki, which he can imbue into his arm or his pipe. His mastery of this type of Haki is superior to that of Burgess, the captain of the Blackbeard Pirates' first ship, as he broke Burgess's Haki-infused right arm armor. Sabo also destroyed the Corrida Colosseum's fighting ring with his Haki-infused fists. Sabo possesses the ability to use Kenbunshoku Haki. In the anime, he is highly skilled in the use of Kenbunshoku Haki, as he sensed that Luffy's Haki had become weak during the battle with Doflamingo, and he dodged multiple bullets that were fired at him. During the Levely's fourth day, Sabo and his group engaged in a fight against Fujitora and Ryokugyu with the goal of saving Kuma. They were able to complete their mission and escape Mary Geoise, but there were allegations that Sabo had assassinated Nefertari Cobra, the Arabasta Kingdom's king, in the process. While at Mary Geoise, Sabo entered the throne room of Pangaea Castle and discovered that the Empty Throne was occupied by Im. He also briefly encountered Jewelry Bonney while infiltrating the castle. Sabo became separated from the other commanders during the mission and sought refuge in the Lulusia Kingdom, which was one of the eight kingdoms that had been overthrown as a result of the Revolutionary Army's influence. Sabo managed to contact the Revolutionary Army, but the Marines were able to eavesdrop on his call because he did not use a White Den Den Mushi to jam the signal. Sabo assured his fellow Revolutionaries that he did not kill Cobra, but before he could report his findings on the Empty Throne, Im destroyed Lulusia. The Five Elders then ordered the Marines to forget about the interception and claimed that Lulusia never existed.