Orochimaru(大蛇丸?), featured in the Japanese folktaleJiraiya Gōketsu Monogatari, is the archenemy of the ninjaJiraiya. He was once named Yashagorō(夜叉五郎?) and was one of Jiraiya's followers but was overtaken by serpent magic. Having changed his name to Orochimaru, he gained the ability to turn himself into a giant serpent. He attacked Jiraiya and Tsunade and defeated them with his venom, only for another follower to save the couple's lives afterwards.