Metal is a hot-blooded and dedicated shinobi, much like his father Rock Lee, who he has sincere respect for, and his father's sensei Might Guy. This was exemplified when he was seen participating in his father's gruesome training regime. At the same time, Lee seems to suffer from social-anxiety, always worrying about people's views of him and wanting to impress others. He also seems to have stage-fright, as when too many people watch him, he locks up and becomes unable to move or perform properly.
Metal Lee bears a strong resemblance to his father: he has shiny black hair worn in a bowl-cut style, dark eyes, and very thick eyebrows. His eyes, however, are noticeably sharper. His likeness is further perpetuated by his attire: he wears a green jumpsuit with orange leg warmers, a scarf and bandages over his hands.
Lee specialises in the Strong Fist-style taijutsu, and, when not overwhelmed by his insecurities, lives up to his reputation as a genius even within his taijutsu-excelling clan. He's shown to have great stamina and endurance, able to keep up with his father's daily intense training regiments. Lee also has notably high strength, able to easily pummel rocks with his fists, and deliver fierce kicks. Such strength has allowed him to hold his own against Shinki, losing the fight only because of a technicality. He also has adept reflexes and dexterity.
While under the influence of dark , he has demonstrated the ability to open at least three of the Eight Gates. Lee is also quite adept at shurikenjutsu, able to effectively aim for targets from behind blind-spots.