Talk:Ultraman Zero/@comment-175.141.41.81-20131020131715/@comment-5527544-20131020163155

21 is just a mystery but he was trained by Seven in the Neos universe. Seven X is the same Ultraseven we know and love but in another universe. His mind was sealed for most of the series due to his host's condition and/or the transference between universes. The difference between Seven and Seven X is only cosmetic, they're the same being.