Sentomaru

Sentomaru is the bodyguard of Vegapunk and is in command of the Marines' Science Unit as its captain. After the timeskip, he has become a full-fledged Marine officer. Due to his actions, he can be considered a supporting antagonist in the Sabaody Archipelago Arc and the secondary antagonist of the Return to Sabaody Arc. Since he asserts to having the tightest defense, Sentomaru also claims to have the tightest mouth and refuses to reply to any questions. However, despite his claim, he is willing to tell everyone about himself whenever something related to a question, or an event occurs. Whenever he gives away information, he claims he is giving it away freely and not because the person he is talking to asked or was curious about something. Sentomaru is confident in his abilities. He took it upon himself to deal with the Straw Hat Pirates with only PX-1 to accompany him. He remains unfazed even in the most serious events, as he was surprised to see Chopper in his monster form while keeping his composure. He was visibly shocked when Luffy easily defeated a Pacifista two years later. He appears to be perceptive as well, having quickly observed that Luffy enforced the impact of a Jet Pistol with Busoshoku Haki after striking down a Pacifista. He is very loyal to the Marines and although he does not have anything against pirates, he still takes his duty to apprehend them, as he went after the Straw Hat Pirates. After the two-year timeskip where Sentomaru was officially inducted into the Marine ranks, he takes the position bestowed upon him very seriously, having opted to partake in the attempted arrest of the Straw Hat Pirates after they were reported to have once again appeared in Sabaody Archipelago, with two Pacifista units to back him up. Sentomaru seems to have a sense of respect for worthy opponents, as when confronting and questioning the fake Luffy, who boasted that he was the real felon, Sentomaru notes that Luffy was not a piece of filth like he was. He seems to show disinterest when someone does not meet his expectations, as he pointed out that Devil Dias could not possibly have survived in the New World after he attempted to escape from the World Nobles. He even called the pirates who joined the Fake Straw Hat Crew "idiots" because he felt that they were dumb enough to be fooled in the first place.

 

Abilities and Powers

Sentomaru claims to be a world-class guard. His fighting style is similar that of Bartholomew Kuma's, standing like a sumo-wrestler and striking with open-palm thrusts which are enhanced through the use of Haki. This allows him to injure even Devil Fruit users as easily as normal people. He is faster than his size and build would suggest, being able to outpace Luffy's normal running speed. In addition, he appeared unfazed by Usopp's giant smokescreen shortly beforehand. The fact that he is in charge of the Marine's Science Unit suggests that he has great insight in that field of expertise.
 

Weapons

Sentomaru carries a massive executioner axe, but only uses it against tougher opponents such as Chopper in his monster form. He used the broad side to flatten Demaro Black, smashing him into the ground with enough force to bury him halfway.
Haki

    Further information: Haki

Busoshoku Haki

Sentomaru can use Busoshoku Haki to enhance his attacks. His control is such that he can not only strike Devil Fruit users and cause them harm by bypassing their defenses, but do so without actually making physical contact. He claims to have the "world's greatest defense", shown when Luffy could not land even a single punch on him.

Sentomaru can use Busoshoku Haki at an advanced level that allows him to emit his armament a short distance without a medium.


Attacks

    Ashigara Dokkoi: Sentomaru smashes his opponents with an open-palm using Busoshoku Haki. It does not actually need to connect to cause damage; the force of his Haki alone is enough to send his opponents flying and cause damage. This was first seen used against Luffy. The name of this attack is a pun as "Ashigara" (Japanese for "Leg-Locked") sounds the same as Ashigara, the name of the mountain where Kintaro (the character on whom Sentomaru is based) was raised. This is called Sumo Strike in the Viz Manga and Ashigara Dokkoi Shove in the FUNimation adaptions.

Kenbunshoku Haki

Sentomaru possesses the ability to use Kenbunshoku Haki.