Tatsuo Samuru is a collected, yet intimidating person, who does not fear to show his power. He does not show mercy if an enemy needs to be brought to justice. In his teen years he was a very cocky and arrogant boy, but after his abusive father had killed his mother, he chose to take revenge on him, by getting turned into a vampire and then killed his father. His arrogant, calm and distant personality still shows sometimes when he is with his lover, becoming softer, affectionate and protective