The Mark of Zorro (1940)

From Wiki-  Don Diego Vega is urgently called home by his father. To all outward appearances, he is the foppish son of a wealthy ranchero, the former alcalde Don Alejandro Vega, having returned to Alta California after his military education in Spain.  Don Diego is horrified at the way the common people are now mistreated by the corrupt new alcalde, Luis Quintero. Don Diego quickly adopts the guise of El Zorro ("The Fox"), a masked outlaw dressed entirely in black, who becomes the defender of the common people and a champion for justice against the uncaring Quintero and his garrison of brutish soldiers.  Back to me again:

Well, Zorro makes a whopping two appearances in a movie with his name in it.  It is a fine Diego movie, but it sure is a poor Zorro movie.  I think the filmmakers were ashamed of the pulp roots of the character, and did their best to negate that.  Anyone expecting a traditional Zorro movie (like I was, the first time I watched it) will be disappointed.  Watching it again, I quite enjoyed it, especially the last duel.  That was amazing.