Kosuke Maruboshi, "the eternal genin". The student of the second and the third hokage. In the series he's shown to be quite powerful, specially with the sword

The father of kakashi perhaps.

When they retrieve the three tails there are some ninjas with kabuto and guren, one that is very girly like, te other wth the bats can't remember the other ones. They should add them also.

Izumo kamizuki, the partner and best friend of Hagane OBVIOUSLY

The team that fought naurto durign the twelve guardian arc thing?