Jiraiya is a significant character in the anime series Naruto. Known as one of the legendary Sannin, Jiraiya is a powerful ninja with exceptional skills in ninjutsu and summoning techniques. He is also a mentor to the series' protagonist, Naruto Uzumaki, and plays a crucial role in his development as a ninja. Jiraiya has a jovial personality and a penchant for writing, often referred to as the 'Toad Sage' due to his ability to summon toads in battle. His wisdom and experience are instrumental in guiding Naruto through his journey.