Board Thread:Naruto Discussions/@comment-25228549-20140821104935/@comment-1411686-20140823092532

^wrong, they are referred to by gender-neutral pronouns. only translations give them genders; same as Katsuyu who is canonically neither gender.

And Kokuo and Matatabis voices mean nothing; the 6 jins and Bijuu all have interchangeable voices; since the Bijuu have so little lines it was easier/cheaper for them to reuse voice actors amongst them.