wait.. we have windmills and we have giants (Jorge Garcia)
how exciting would it be if Don Quixote was in SB? who the heck would be Sancho Panza?
But I think it’s more of a wink from the writers of the show. Don Quixote rides Rocinante, and what does Don Quixote do? he fights imaginary enemies. Well so does Regina. Emma (except at the end) never was trying to arm, steal or take Henry from Regina. The Evil Queen created an enemy where there was none to begin with.