Tobirama was infamous for many things. All of Fire country knew him for his stoicism and ruthless nature. Stories about his prowess in battle had spread through all of the five elemental nations. The one thing he was most famous for, however, was that none knew what he looked like. If you were unlucky enough to face him in battle then you were going to die, it was as simple as that. No one could truly claim that they had ever seen him outside of the battlefield. He was a secretive man who existed as a shadow, a ghoul that haunted the nightmares of shinobi of every caliber.

No one knew why Senju Tobirama was kept so secret. When not involved in battle he appeared to stay within his clan 's hidden compound '

appeared

to. Since no one could say for sure what he looked like no one could ever say for sure whether he travelled or not. He might appear in a group of Senju facing you in battle and you would never know until your entire squad had fallen.