1. Shikamaru Nara
Shikhamaru is the most Intelligent character in Naruto series. He is the current advisor of Naruto. If naruto dies, Shikhamaru is capable of taking the place of hokage because he has great judgement skills, analysis skills and very intelligent.
But he lacks some strength which is essential to be a Hokage and he may reject the title of Hokage due to his lazy attitude.
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