Kabuto Yakushi is a major character in Naruto, serving initially as a skilled medical-nin and assistant to Orochimaru. He is intelligent, analytical, and highly adaptable, often acting as a spy and strategist. Over time, Kabuto becomes one of the series’ most dangerous antagonists, mastering forbidden techniques and the Reanimation Jutsu to support the Fourth Great Ninja War. His role is significant as both an enabler of Orochimaru’s plans and a major threat in his own right.