Ace is the 2nd division commander of the Whitebeard pirates, and is considered to be Monkey D. Luffy's and Sabo's older brother .He is the son of Gol D. Roger the Pirate King , whom he hated . Ace ate the Mera Mera no mi (Flame Flame fruit) which is a Logia type devil fruit that grants its consumer the ability to become and project fire , as well as become intangible . He is also a capable of using Haoshoku Haki (Color of the Conqueror haki) which allows him to render those with wills weaker than him unconscious. Ace also possesses immense physical strength , durability and stamina . As a child he was able to kick down a tree with little effort and was able to beat a group of adults half to death . He was also able to fight for five days straight with Jinbe to a stalemate , and didn't even flinch from the boiling "baptism" of impel down .