Most secretive character?

[uchihachester]

Shino.....

 

[JesseBlack]

Kaguya and Madara

 

[Bansho Tenin]

Do you mean from what we know from the story or from the characters personality?

 

[assface3]

Orochimaru, by far.

 

[Florio]

Do you mean from what we know from the story or from the characters personality?

What we know from the story. For example, Orochimaru definitely knows some secrets about the Rinnegan and the sage and such.