Kidomaru is a shinobi from Otogakure and a member of the Sound Four. He generally sees a battle as a game and displays a laid-back ease in fights. Kidomaru greatly enjoys combat and relishes in strong opponents as a source of entertainment, finding weaker opponents not worth his time and boring. Like the other members of the Sound Four, he is extremely arrogant with his opponents, though he is not as arrogant as the others. Kidomaru is shown to have a sadistic side, often playing around with the opponent too much because he prefers to have fun seeing the opponent struggle and will even laugh sometimes as he gradually becomes more brutal in his attacks. Due to this, he tends to slow down his team by overextending the battle with an opponent he is interested in and his team-mates noted that when Kidōmaru gets particularly excited he will enter the second level of his cursed seal quickly, despite knowing the dangers of using it recklessly.