Board Thread:Theories and Speculation/@comment-1512913-20161119171442/@comment-25122992-20161129163103

Elveonora wrote: We saw Madara use Storm Release though. Again, just because Mu and Onoki didn't use Lava Release and some other dual combined natures doesn't mean they can't- It might not be their preferred fighting style etc. Naruto can now use all natures, yet have you seen him spam anything besides Fuuton Rasenshuriken? Naruto using 5 natures was stated as a Databook. Since there's nothing that directly contradicts this and indicates it's an error, we can treat this as a confirmed info. No such an info about Onoki's/Muu's possible KG has ever appeared. As I already said, if the character has never demonstrated certain abilities or hasn't been stated their user (either in the series themselves or in the databooks and other official sources), he can't be considered their user by default. Otherwise, we're stepping into the land of uncertainty where every character can be given any jutsu/ability/weapon if there's no reason he can't use it, but despite the fact he was never mentioned to possess them, just because "it might not be his preferred battlestyle, that's why he never used it".