Don Diego was a depicted student at the University of Spain he was A excellent swordsman at the University of Manuel Escalante however upon his return home he sees that's California is ruled with an iron fist and he quickly adopts the identity of Zorro known only to his milk brother Bernardo and he also pretends to be a useless swordsman and a delicate dandy to hide the identity of Zorro

And to hide his identity as Zorro he also pretends to hate violence and weapons he prefers things like painting poetry in books and playing the guitar he pretends to be a man of letters

Also Don Diego very often makes fun of Zorro to divert peoples attention