Sawamura was a dark, brooding boxer with a devastating fighting style and a tendency to foul. However, unlike Mashiba's openly aggressive personality, Sawamura possessed the attitude of a cold, calculating and oftentimes unstable killer. Also unlike Mashiba, who usually fouled in desperation, Sawamura would often commit illegal moves simply out of pure malice, even when he has the upper hand in a fight. He was shown to be highly cruel and antagonistic, 