Metal Lee (メタル・リー, Metaru Rī) is a genin of Konohagakure's Lee clan.
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.
Metal 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 and neck warmers and bandages over his hands. In Boruto, he exchanges his neck warmer for a scarf.
Metal appears to specialise in taijutsu, and is recognised as a genius within his taijutsu-excelling clan. He's shown great stamina and strength, keeping up with his father's training and capable of holding his own against Shinki, as well as repelling his puppet into a wall with a single kick.