Tsunade

Tsunade (綱手), featured in the Japanese folktale Jiraiya Gōketsu Monogatari (児雷也豪傑物語), was a young maiden who married Jiraiya and helped him defeat Orochimaru. She mastered slug magic and could walk on water.

Influences on fiction
In the manga and anime series Naruto, characters named Tsunade, Jiraiya, and Orochimaru appear as three legendary ninja known as the Densetsu no Sannin (伝説の三忍).