Moreover, Kabuto becomes an even weaker contender as an antagonist when considering he was used as a spy twice before becoming a somewhat relevant villain. It was revealed in Naruto Shippuden that ...

Naruto Shippuden's most emotional moments include ... history's strongest shinobi who had been brought back to life with Kabuto's Reanimation Jutsu and an infinite chakra supply.

In Naruto Shippuden, however ... it could have also given Sasuke a greater outlet of power. Kabuto is a recurring villain in Naruto, yet his place as an endgame villain for the series is quite ...