Born in the East Blue, Zoro is the son of Tera and Roronoa Arashi, the grandson of Shimotsuki Furiko and Roronoa Pinzoro, and the grandnephew of Shimotsuki Ushimaru, making him a descendant of both the Shimotsuki Family of Wano Country and the legendary samurai, Shimotsuki Ryuma. As a master of Three Sword Style, a swordsmanship style which he created during his childhood training in Shimotsuki Village, Zoro is one of the three most powerful combatants of the Straw Hats.