Scratchmen Apoo is captain of the On Air Pirates from the longarm tribe, and one of the Eleven Supernovas. His Devil Fruit power is linked to music.
So far nothing has been reveled about Apoo's past other than that he is the only Supernova from the Longarm tribe and from the Grand Line.
Scratchmen Apoo is a supporting character in the One Piece series that was created by Eiichiro Oda. The series first began serialization in Shueisha's Weekly Shōnen Jump on August 4, 1997. He first appeared during the Sabaody Archipelago Arc that began in Volume 50.
His first appearance was in One Piece Volume 51 CH. 498 "The 11 Supernovas", and his first anime appearance was in One Piece - Episode 392 "New Rivals Gather! The 11 Supernovas". His character in the Japanese series is voiced by Mitsuaki Madono, and the U.S. dub produced by FUNimation has yet to be announced.
Appo's clothing is very colourful and revoled around chinese and music culter, he wears a chinese garb with the kanji "Music" on the front, he has a rose printed on his left shoulder and wears a yellow sash around his waist. He has very long hair with beads in them, he wears traditional chinese shoes as well as custom headphones with he name on them, he also wears yellow tinted glasses. Apoo is from the Longarm tribe and as the name suggest he has vey long arms, each arm has two elbows making them much longer than a normal human's. Apoo's own body is also music themed as his teeth resemble piano keys and his jaw is much wider then his face, although this is possibly due to his devil fruit powers. Appo also has a unique stance when fighting, his arms move in a way that a DJ would. It is possible that Apoo's hairstyle and chinese themed attire was modled after the real life chinese pirate he was based on; Chui Apoo.
Apoo is a loud a somewhat cocky man, he is also seemingly fearless as shown when he engadged fellow Supernova Eustass Kid and remarked that they should fight on the other side of the wall due to how strong he was. He also seemingly was not scared of an admiral coming to Archipelago as he wanted to see how strong he was despite his crewmate warning him to leave. However despite his manners he has shown to be brave and helpful when needed as shown when he stopped Kizaru from Killing Basil Hawkins by attacking him, he even mocked Kizaru after he was down before attempting to flee the scene. Apoo seems to be very palyful with his crew as shown in the anime when he gave his crewmate a noogie in a playful manner and calmy enjoying a few drinks with his crew at the Archipelago bar. However Apoo seems to hate being told things he already knows as shown when a fellow Nakama told him they were running on air after being chased by a pack a boars in the New world. Apoo also seems to be attention starved as he loves to show off when their is a crowd as shown when he showed off his music skills when he confronted Kizaru before actualy attacking.
Apoo is in possession of a unamed devil fruit that allows him to literaly fight with music. The frut allows him to transform parts of his body into music instruments and attack with sound waves, so far it seems that Apoo is a far ranged fighter and only has two moves shown.
"Slash": The properties is this move is unknown however is has shonw to be albe to easily slice off the opponents limbs, as shown when he used this attack to slahs off the arm of Admiral Kizaru.
"Boom": This move was a follow up of the attack "Slash" is causes a massive explosion that rips the enemy in two. This move was also used on admiral Kizaru.
Other than those, the full exstent of Apoo's powers are unknown, however he was able to destroy a building in his fight with Eustass Kid. Apoo might also possess Haki as he was able to blow Kizaru in hlaf instead of his attack simply phasing through him.