Zoro was the first crew member to be recruited by Luffy. Zoro is a skilled swordsman who fights with is own unique sword style known as santoryu (three katana fighting style).This is achieved by using one katana in each hand and another in his mouth. He is also seen fighting with only one or two swords. When in a serious fight he ties his normally, tied on the arm bandana, on his head.
Though not a samurai, he appears to maintain a certain degree of bushido, and is frequently mistaken for one. Unlike Luffy and most of the other Straw Hat pirates, Zoro has been known to kill his opponents if he has to, though never in cold blood.

Kenshin Himura, also known throughout the anime as Hitokiri Battousai (Battousai the Manslayer) or Himura the Battousai is the main character of the anime series Rurouni Kenshin. His original name was Shinta. His parents died of cholera when he was very young and as a result, was adopted by three slave women in a traveling slave wagon. Soon after meeting them, bandits had raided the convoy and killed his three new guardians and where about to kill him when Seijeru Hiko killed the bandits. Hiko soon adopted the child and because Shinta was not a name fitted for a swordman, he renamed him Kenshin, meaning "Heart of Sword," took him under his wing and taught him the Hiten Mitsuruugi Ryu.