Setsuna Uchiha

was a member of the Uchiha clan during reign of the Second Hokage. He was a member of the Konoha Military Police.

Tired of the Second Hokage's suspicions against the Uchiha clan, he plotted to take back the supremacy held by the Senju clan.

He seems to bear a sword on his back.

Trivia

 * Setsuna can mean, or.