Kidomaru treated any fight like a game and maintained a relaxed, almost lazy attitude even in the heat of battle. He possessed a sharp analytical mind and first assessed the opponent's abilities to find a weak point. Weak enemies bored him, while strong ones, on the contrary, ignited his excitement. His speech was peppered with gaming terms like "level," "difficulty," and "game over." He had a sadistic streak: he deliberately prolonged the fight, enjoying the victim's suffering and gradually intensifying his attacks. Because of this, he often held back the entire Four when he got carried away with a particularly interesting opponent. Arrogance was inherent in him, as in the other members of the group, although he did not believe they could defeat Kakashi. His overconfidence often overrode caution, causing him to underestimate the enemy and act overly recklessly. At the same time, he acknowledged others' strength if the opponent proved it through action. He treated his comrades without warmth, but he observed subordination and followed orders. Overall, he was a calculating, cruel, and incredibly patient hunter who turned battle into a refined form of entertainment.