Susanoo is not an individual character but a powerful ability used by members of the Uchiha clan in the anime series Naruto. It is a gigantic, humanoid avatar made of chakra that provides both offense and defense during battles. Only those who have awakened the Mangekyō Sharingan in both eyes can use Susanoo. It serves as a manifestation of the user's power and will, appearing in the battles of prominent Uchiha members like Sasuke and Itachi. Its role is critical in several high-stakes fights.