"Fire-Fist" Ace was the 2nd division commander of the Whitebeard Pirates, and was Luffy's and Sabo's older brother. He was the biological son of Gol D. Roger, the Pirate King, whom he hated. Ace ate the Mera Mera no Mi (Flame Flame Fruit), a Logia-type Devil Fruit that grants him the ability to create, control, and transform into fire at will. He is also one of the few people in the world who can use Haoshoku Haki (Conqueror's Haki), which allows him to render those with wills weaker than him unconscious. Ace possessed immense physical strength, durability and stamina . As a child, he was able to kick down a tree with little effort, hunt and fight large animals, and beat up a group of adults. He was also able to fight Jinbe to a stalemate for five days straight, and didn't even flinch from the boiling "baptism" of Impel Down.