
Jiraiya (自来也) was one of the legendary Sannin or along with Tsunade and Orochimaru, who was trained by the Third Hokage. He was a self-proclaimed super-pervert or and wrote a popular adult book series called Icha Icha, a favorite of Kakashi Hatake. He was also known as the Toad Sage (蝦蟇仙人or Gama Sennin)or because of his signature toad summonings. He was the Fourth Hokage's teacher. He then became Naruto Uzumaki's teacher. Jiraiya had the kanji for "oil" on his forehead protector.