Board Thread:Naruto Discussions/@comment-25122992-20161230113055/@comment-25122992-20161230175310

Technically, the control over him was the whole reason of Kurama despising Madara, as well as Madara's insulting approach to him (about the beasts being the slaves of the Sharingan users etc). But otherwise, Kurama's status as a summoning animal seems weird, since it neglects most of the summoning rules we've learned before.