Tenzen is by far the strongest and the most blood thirsty Iga. He acts as a leader and he disrespects Oboro in many ways. All the other Iga obey him and that is mostly because of his hatred to Kouga and because of his abilities. He appears to respect Gennosuke's power and that makes him want to kill every Kouga before they get to know that the war has begun. He has the ability to rapidly heal himself and that makes him seem to be invincible!